Abstract: A transmitting/receiving system including a transmitter/receiver and a retransmitter. The transmitter/receiver includes an antenna, a multiplexer, a mixer, a receiver, a transmitter, an IF processor, a DSP and a control module. The retransmitter includes an antenna, a transceiver and a controller. The receiver receives a main input radio-frequency signal. The transmitter transmits a main output radio-frequency signal. The transceiver receives the main input radio-frequency signal, transforms the main input radio-frequency signal into an intermediate radio-frequency signal, and transmits the intermediate radio-frequency signal. The IF processor receives the intermediate radio-frequency signal and processes the intermediate radio-frequency signal. The DSP processes the main input radio-frequency signal with the processed intermediate radio-frequency signal.

Abstract: A method for transmitting a sounding reference signal from a user equipment in a MIMO antenna wireless communication system. The method includes receiving sounding reference signal setup information from a base station, the sounding reference signal setup information including an initial cyclic shift value nSRScs and an initial transmissionComb parameter value kTC; setting an interval between cyclic shift values corresponding to each antenna port based on the initial cyclic shift value, to reach a maximum interval; setting a transmissionComb parameter value corresponding to a specific one of the antenna ports to a value different from the initial transmissionComb parameter value if the initial cyclic shift value is a previously set value and the number of antenna ports is 4; and transmitting the sounding reference signal to the base station through each antenna port by using the set cyclic shift value and transmissionComb parameter value.

Abstract: A network interface apparatus for wireless Ethernet is provided. The network interface apparatus includes: a Network Interface Card (NIC) control unit for converting a gigabit wired Ethernet signal into a Peripheral Component Interconnect express (PCIe) signal; a wireless network processing unit for converting the PCIe signal received from the NIC control unit into an analog signal; and an RF transmitting/receiving unit for converting the analog signal inputted from the wireless network processing unit into an RF signal of a 60 GHz frequency band to transmit the converted RF signal into a wireless terminal device.

Abstract: Methods and systems for vector combining power amplification are disclosed herein. In one embodiment, a plurality of signals are individually amplified, then summed to form a desired time-varying complex envelope signal. Phase and/or frequency characteristics of one or more of the signals are controlled to provide the desired phase, frequency, and/or amplitude characteristics of the desired time-varying complex envelope signal. In another embodiment, a time-varying complex envelope signal is decomposed into a plurality of constant envelope constituent signals. The constituent signals are amplified equally or substantially equally, and then summed to construct an amplified version of the original time-varying envelope signal. Embodiments also perform frequency up-conversion.

Abstract: Certain aspects of the present disclosure provide apparatus for producing an output signal having a duty cycle of 50% and a frequency that is one third that of an input signal. One example frequency dividing circuit for producing such an output signal generally includes first and second flip-flops; first, second, and third logic circuits, each configured to function equivalently to a logic OR gate; and an internal frequency dividing circuit configured to generate an output waveform having a frequency that is one half that of an input waveform.

Abstract: It is presented a method, performed in a network node, for enabling selection of modulation mode for a user equipment, UE. The method comprises: determining whether to provide higher order modulation, HOM, mode support for the UE; when HOM mode support is to be provided, selecting at least one HOM table for the UE; and when HOM mode support is not to be provided, selecting at least one non-HOM table for the UE.

Abstract: An apparatus for encoding data signals includes a transmitter configured to encode and transmit a data signal over a communication channel, the transmitter including a precoder; a signal shaper configured to adjust the data signal by applying an equalization setting to the data signal, the equalization setting including an amplitude and offset and transmit the adjusted data signal to the precoder; and a processing unit. The processing unit is configured to perform: receiving channel coefficients associated with the communication channel; for each of a plurality of amplitude settings and a plurality of offset settings, calculating whether a modulo amplitude level would occur at a receiver using a modulo operation; selecting the equalization setting from the plurality of amplitude settings and the plurality of offset settings based on the calculation; and transmitting a control signal specifying the equalization setting to the signal shaper.

Abstract: A method for transmitting a data packet includes prepending to the digital contents of the data packet a preamble including a first preamble field having a plurality of repetitions of a sequence. The method also includes determining according to a specified communication protocol a first transmission power level for the data packet and determining according to the specified communication protocol and the first preamble field an unadjusted transmission power level for the first preamble field. The method further includes determining the presence of one or more power-boost characteristics of the data packet or of an intended receiving client, transmitting the first preamble field at a first adjusted transmission power level if one or more power-boost characteristics are determined to be present, and transmitting a remainder of the data packet at the first transmission power level for the data packet.

Abstract: An integrated circuit includes: a digitally-controlled power generation stage for converting an input signal to a radio frequency (RF) carrier, the digitally-controlled power generation stage including a plurality of selectable switching devices capable of adjusting an envelope of the RF carrier; and a pulse width modulator (PWM) generator arranged to generate a PWM control signal according to a fractional word and operably coupleable to the plurality of selectable switching devices of the digitally-controlled power generation stage; wherein the PWM generator inputs the PWM control signal to a subset of the plurality of the selectable switching devices such that a PWM signal adjusts the envelope of the RF carrier output from the digitally-controlled power generation stage.

Abstract: In one embodiment, a device for constructing a pilot signal for use in a wireless repeater where the pilot signal is added to a transmit signal includes one or more pilot generators. Each pilot generator generates a carrier pilot signal associated with a single carrier of the transmit signal and the carrier pilot signals generated by the one or more pilot generators are summed to generate the pilot signal. Each of the one or more pilot generators includes a pilot symbol unit providing multiple data symbols having a predetermined data structure as the carrier pilot signal, a pilot scrambler, a filter, a pilot power determination unit, and a cyclic prefix insertion unit for inserting a cyclic prefix to the carrier pilot signal. In another embodiment, the pilot symbol unit providing multiple data symbols in frequency domain as the carrier pilot signal.

Abstract: A stream of information is communicated by means of transmission distributed over a plurality of transmission antennas and reception distributed over a plurality of reception antennas. In the method the stream is encoded according to an error correcting code, into a series of multi-bit symbols. A sequence of the multi-bit symbols is interleaved, by which symbols are assigned to time slots, so that the multiple bits of the symbols remain together in the same time slot. The interleaved multi-bit symbols are transmitted, with each symbol distributed over the transmission antennas in a respective time slot. Signals received at the reception antennas in each respective time slot are received and demodulated, to produce demodulation results each for a respective time slot. A time-slot sequence of the demodulation results is deinterleaved. Decoded symbol values are selected under a constraint that a series of the selected symbols belongs to the error correcting code.

Abstract: Method for transmitting and receiving signals over at least one channel between at least one transmitter and at least one receiver, the channel comprising at least one group of sub-channels, the group comprising at least one sub-channel, including the procedures of estimating at least one line characteristic of the channel and selecting a transmission scheme for each group of the at least one group of sub-channels according to the estimated line characteristic, wherein the transmission scheme is selected between a single spatial stream transmission scheme and a multiple spatial stream transmission scheme.

Abstract: A communication apparatus, method, and system are provided. The communication apparatus receives through a transmission path a combined signal in which modulated signals are combined. The communication apparatus converts a channel matrix indicating transmission characteristics of the transmission path using a basis conversion matrix which converts column vectors forming the channel matrix to cross at right angles, estimates a transmission symbol using the converted channel matrix, and calculates a likelihood of each bit of the estimated transmission symbol being a “1” and a “0”, respectively, using an inverse matrix of the basis conversion matrix. The method includes converting a channel matrix; estimating a transmission symbol; and calculating a likelihood of each bit being a “1” and a “0”, respectively, of the estimated transmission symbol using a basis conversion matrix. The system includes a transmitter and receiver for transmitting and receiving, respectively, a combined signal according to the method.

Abstract: In a MIMO communications system a first communications device applies beamforming to a complete transmission packet including both synchronization data and either payload data or training symbols. A second communications device evaluates the beamformed synchronization data and determines and transmits a feedback information indicating minimum required synchronization data and/or a minimum number of training symbols. The first communications device tailors the synchronization data and/or number of training symbols on the basis of the feedback information. Beamforming the complete transmission packet facilitates signal suppression at defined locations. When the channel properties change, the second communications device may provide further channel state information to adapt beamforming in the first communications device without transmission of not beamformed training symbols. The communications system may be a powerline telecommunications system.

Abstract: Disclosed is a precoding method comprising the steps of: generating a first coded block and a second coded block with use of a predetermined error correction block coding scheme; generating a first precoded signal z1 and a second precoded signal z2 by performing a precoding process, which corresponds to a matrix selected from among the N matrices F[i], on a first baseband signal s1 generated from the first coded block and a second baseband signal s2 generated from the second coded block, respectively; the first precoded signal z1 and the second precoded signal z2 satisfying (z1, z2)T=F[i] (s1, s2)T; and changing both of or one of a power of the first precoded signal z1 and a power of the second precoded signal z2, such that an average power of the first precoded signal z1 is less than an average power of the second precoded signal z2.

Abstract: A signal transmitting and receiving method and an apparatus for selecting an interference pattern from a security key and transmitting and receiving a signal based on the selected interference pattern are provided.

Abstract: Disclosed is a precoding method for generating, from a plurality of baseband signals, a plurality of precoded signals that are transmitted in the same frequency bandwidth at the same time. According to the precoding method, one matrix is selected from among matrices defining a precoding process that is performed on the plurality of baseband signals by hopping between the matrices. A first baseband signal and a second baseband signal relating to a first coded block and a second coded block generated by using a predetermined error correction block coding scheme satisfy a given condition.

Abstract: The data and/or command signal transmission device includes a first signal generator connected to a first antenna arrangement, a second signal generator connected to a second antenna arrangement, a third signal generator connected to a third antenna arrangement, and a synchronization circuit. The synchronization circuit performs data amplitude modulation by combining the signals transmitted by the antenna arrangements. The signals transmitted by the first and third antenna arrangements are in-phase in a first stable modulation state and 180° out of phase in a second stable modulation state. In a modulation state transition phase, the first and third signals delivered by the first and third generators are at a different frequency from the carrier frequency of the signals delivered by the second generator. The resonance frequency of the first and third antenna arrangements is also adapted in the transition phase.

Abstract: In one embodiment, a method comprising receiving at a first node a first data frame having a first frequency and a first phase, receiving at the first node a second data frame having a second frequency and a second phase, and determining a first phase difference between the first phase and the second phase by correlating one or more first sampling values associated with data in the first data frame with one or more second sampling values associated with data in the second data frame.

Abstract: A method and apparatus are described including receiving a first signal including first data in a first time slot of a first channel (705), receiving a second signal including second data in a second time slot of a second channel (710), determining a first pre-coding matrix (715), determining a second pre-coding matrix (720), applying the first pre-coding matrix to the first data to produce pre-coded first data (725), applying the second pre-coding matrix to the second data to produce pre-coded second data (730), generating a third signal by combining the pre-coded first data and the pre-coded second data (735) and transmitting the third signal on the first channel and on the second channel (740). Also described are a method and apparatus including transmitting a first signal (605), receiving a second signal including a first training sequence (610) and decoding the second signal by removing the first training sequence and removing the first signal (615).

Abstract: Methods and systems for encoding and decoding signals using a Multi-input Multi-output Time Encoding Machine (TEM) and Time Decoding Machine are disclosed herein.

Abstract: Systems and methodologies are described that facilitate utilizing dedicated reference signal in connection with downlink transmissions. A dedicated reference signal can comprise a set of dedicated reference symbols, which are inserted into a resource block in accordance with a specification provided by a dedicated reference signal structure. The dedicated reference signal structure can vary according to a rank utilized in the downlink transmission.

Abstract: Transmission quality is improved in an environment in which direct waves dominate in a transmission method for transmitting a plurality of modulated signals from a plurality of antennas at the same time. All data symbols used in data transmission of a modulated signal are precoded by hopping between precoding matrices so that the precoding matrix used to precode each data symbol and the precoding matrices used to precode data symbols that are adjacent to the data symbol in the frequency domain and the time domain all differ. A modulated signal with such data symbols arranged therein is transmitted.

Abstract: Systems and methods are provided for common mode testing for a system using an Ethernet subsystem. The Ethernet subsystem generates test signals that can be introduced at various points in the system to detect the effect of noise introduced by various elements of the system. By introducing test signals at various points in a system, common mode noise introduced into the system can be more accurately determined.

Abstract: A method includes receiving signals transmitted over a communication channel in multiple blocks transmitted in respective frequency bins during respective time intervals. An estimate of the communication channel, for a given block transmitted during a respective time interval, is computed by (i) computing respective interim filtering results for the blocks transmitted in the respective time interval in the respective frequency bins belonging to the predefined subset, by filtering a first group of the reference signals that are transmitted in odd-order frequency bins and in a first set of symbols, so as to produce odd-order interim filtering results, and filtering a second group of the reference signals that are transmitted in even-order frequency bins and in a second set of symbols that does not overlap the first set, so as to produce even-order interim filtering results; and (ii) combining the odd-order interim filtering results and the even-order interim filtering results.

Abstract: A method of allocating pilot bits in a wireless communication system using a multiple carrier modulation (MCM) is disclosed. The method includes allocating a plurality of precoded data symbols precoded by a precoding matrix module and a plurality of non-precoded pilot bits to a plurality of subcarriers, and transmitting the allocated precoded data symbols and the allocated non-precoded pilot bits.

Abstract: This document is related to a wireless communication system, and more particularly to a method and an apparatus for transmitting encoded signals with frequency hopping environment. A method of transmitting signals by a user equipment (UE) comprises: encoding an input signal having a length of (A) bits by using (A) basis sequences having a length of 20 bits to output an encoded signal having a length of 20 bits, wherein (A) is a natural number less than 14; mapping the encoded signal having the length of 20 bits to two different resource regions, wherein the first 10 bits of the encoded signal are mapped to a first resource region, and the second 10 bits of the encoded signal are mapped to a second resource region; and transmitting the resource-mapped signals to a Node B, wherein the encoded signal or the (A) basis sequences are cyclic shifted with a value of (x) before mapping the encoded signal to the two different resource regions, wherein (x) is a natural number less than 20.

Abstract: Disclosed is a method of transmitting dual digital signals through a single antenna. The method includes receiving, by a transmitter, a first data stream and a second data stream which use the same carrier frequency, modulating, by the transmitter, each of the first data stream and the second data stream, lowering, by the transmitter, a power level of the modulated second data stream, combining, by the transmitter, the modulated first data stream and the second data stream with the lowered power level, and transmitting, by the transmitter, the added first data stream and second data stream to a single antenna in the same channel.

Abstract: The burden of designing multiple training sequences for systems having multiple transmit antennas, is drastically reduced by employing a single sequence from which the necessary multiple sequences are developed. The single sequence is selected to create sequences that have an impulse-like autocorrelation function and zero cross correlations. A sequence of any desired length Nt can be realized for an arbitrary number of channel taps, L. The created sequences can be restricted to a standard constellation (that is used in transmitting information symbols) so that a common constellation mapper is used for both the information signals and the training sequence. In some applications a training sequence may be selected so that it is encoded with the same encoder that is used for encoding information symbols. Both block and trellis coding is possible in embodiments that employ this approach.

Abstract: A transmission apparatus configured to transmit four OFDM signals from four transmission antennas includes: a pilot signal insertion unit configured to generate four types of OFDM symbols by inserting pilot signals of different patterns into four types of transmission signals; and an OFDM signal generation unit configured to generate four OFDM signals by modulating respective carriers of the four types of OFDM symbols.

Abstract: Systems, methods, apparatuses, and computer program products for an interleaved multi-beam acquisition waveform providing concurrent beam selection, automatic gain control (AGC) and automatic frequency correction (AFC) are provided. The access point (AP) may send an acquisition waveform on multiple beams, then return and retransmit an AFC on the multiple beams thus interleaving beam switching with the acquisition and frequency correction waveforms. AGC correction can be deferred until the end, relying on the fact that the transmitter may be detected at close range using a one of the multi-beams that is attenuated.

Abstract: A system and method are disclosed for transmitting data over a wireless channel. In some embodiments, transmitting data includes receiving convolutionally encoded data and enhancing the transmission of the data by further repetition encoding the data.

Abstract: In a data transmission system, one or more signal supply voltages for generating the signaling voltage of a signal to be transmitted are generated in a first circuit and forwarded from the first circuit to a second circuit. The second circuit may use the forwarded signal supply voltages to generate another signal to be transmitted back from the second circuit to the first circuit, thereby obviating the need to generate signal supply voltages separately in the second circuit. The first circuit may also adjust the signal supply voltages based on the signal transmitted back from the second circuit to the first circuit. The data transmission system may employ a single-ended signaling system in which the signaling voltage is referenced to a reference voltage that is a power supply voltage such as ground, shared by the first circuit and the second circuit.

Abstract: A signal conversion device includes: a converter configured to output a 1-bit quantized signal representing an analog signal based on a band transmission system; and an encoder configured to execute a baseband line coding process on the 1-bit quantized signal. The baseband line coding process is a process to be frequency conversion for the analog signal, and is a baseband line coding process in which the 1-bit quantized signal is coded such that the appearance frequencies of two kinds of bit values in the 1-bit quantized signal are different from each other.

Abstract: The present invention provides a method and system for reducing the peak to average power ratio (PAP) of a signal with low computational complexity. According to one embodiment, the present invention is applied to reduce the PAP of an OFDM signal. According to an alternative embodiment, the present invention, is applied to reduce the PAP of a CDMA signal. Rather than seeking the optimum solution, which involves significant computational complexity, the present invention provides for a number of sub-optimal techniques for reducing the PAP of an OFDM signal but with much lower computational complexity.

Abstract: The present invention provides an encoding method and an encoding device. The method includes: dividing to-be-encoded input data into M parts according to the number of levels of concatenated Polar encoding, where M is the number of levels of concatenated Polar encoding; and performing Polar encoding for information bits of each level of Polar encoding level by level to obtain Polar-encoded data of the input data, where each part of data obtained through the dividing and output bits of a previous level of Polar encoding serve together as information bits of a next level of Polar encoding. Embodiments of the present invention can improve performance of Polar codes.

Abstract: The present disclosure provides systems and methods for noise tolerant signal processing in a pilot assisted data receiver, including: given received pilots with common pilot components and individual pilot components, computing coefficients associated with the individual pilot components of the received pilots; and applying the computed coefficients to the received pilots to obtain conditioned pilots. The individual pilot components result from relatively slow changes of the received pilots relative to the common pilot components. The common pilot components result from relatively fast changes of the received pilots relative to the individual pilot components.

Abstract: A method and apparatus for transmit signal pulse shaping. Automotive vehicle manufacturers that incorporate electronic components into an automotive vehicle must consider emission requirements masks that can be dependent on particular geographic markets as well as the other electronic components contained within a particular automotive vehicle design. A physical layer device is provided that can be configured to operate in multiple emissions configurations using configurable parameters.

Abstract: An exemplary system comprises at least one antenna, first and second signal paths, and an N-plexer. The antenna may be configured to receive first and second diversity receive signals. The antenna is further configured to transmit first and second diversity transmit signals. The first signal path may have a frequency converter configured to downconvert the first diversity receive signal to an intermediate frequency and to upconvert the first diversity transmit signal to a radio frequency. The second signal path may have a frequency converter configured to downconvert the second diversity receive signal to an intermediate frequency and to upconvert the second diversity transmit signal to the radio frequency. The N-plexer may be configured to provide the first and second diversity receive signals to a cable and to provide from the cable the first and second diversity transmit signals to the first signal path and the second signal path, respectively.

Abstract: Methods, systems, and computer readable media for asymmetric multimode interconnect (MMI) are disclosed. According to one aspect, a system for receiver-side asymmetric MMI includes a receiver that receives binary-encoded input signals from a multichannel interconnect, encodes the received binary-encoded signals according to a multimode encoding equation to produce multimode-encoded signals having voltage levels according to the multimode encoding equation, adjusts the timing of the multimode-encoded signals to compensate for multichannel interconnect channel delays to produce delay-adjusted multimode-encoded signals, and decodes the delay-adjusted multimode-encoded signals according to a multimode decoding equation to produce binary-encoded output signals.

Abstract: A transmitter and method for processing a digitally modulated communication signal, which may reduce peak-to-average-power-ratio (PAPR) while maintaining acceptable error rates is disclosed. After subcarrier mapping, a first digital representation of the signal is upsampled into a second digital representation, which is transformed into a first time domain representation. Samples whose magnitudes exceed a magnitude limit are limited to that limit to produce a second time domain representation. The second time domain representation is transformed to a third frequency domain representation, which is downsampled into a fourth frequency domain representation. In addition to the in-band subcarriers, some out-of-band subcarriers adjacent to the frequency band are preserved while the remaining out-of-band subcarriers are eliminated to produce a fifth frequency domain representation.

Abstract: A vectored-DSL method and system and a board relate to the field of digital subscriber line DSL data processing, so as to increase user capacity of a vectored-DSL system. The vectored-DSL method includes: receiving, by at least one board, and pre-processing user data of the board; transmitting, by the board, the user data of the board to an auxiliary vector processor on the board to perform internal vectorization processing, so as to obtain internally processed data; transmitting, by the board, the user data thereof to a centralized vector processor to perform external vectorization processing, so as to obtain externally processed data; and receiving, by the board, the externally processed data of the board, and post-processing the externally processed data and the internally processed data.

Abstract: Disclosed are a broadcast signal transmitter, a broadcast signal receiver, and a method for transceiving a broadcast signal in the broadcast signal transmitter/receiver. A method for transmitting a broadcast signal comprises the following steps: signaling in-band signaling information to at least one of a service component physical layer pipe (PLP) including at least one service component of a broadcast service, a first information PLP including first service information applied to one broadcast service and a second information PLP including second service information applied commonly to a variety of broadcast services; performing the FEC encoding on data included in each PLP; performing time-interleaving on the FEC encoded data; generating a transmission frame including the time-interleaved data; and modulating the transmission frame and transmitting a broadcast signal including the modulated transmission frame.

Abstract: A receiver comprises a demodulator configured to detect a signal representing the OFDM symbols and to generate a sampled digital version of the OFDM symbols in the time domain. A Fourier transform processor is configured to receive the time domain digital version of the OFDM symbols and to form a frequency domain version of the OFDM symbols, from which the pilot symbol bearing sub-carriers and the data symbol bearing sub-carriers can be recovered. A detector is configured to recover the data symbols from the data bearing sub-carriers of the OFDM symbols and to recover the pilot symbols from the pilot bearing sub-carriers of the OFDM symbols in accordance with the scattered pilot symbol pattern and the continuous pilot symbol pattern. The scattered pilot symbol pattern is one of a plurality of scattered pilot symbol patterns and the continuous pilot pattern is independent of the scattered pilot symbol pattern.

Abstract: The invention relates to a method for transmitting sensor signals, comprising the following steps: a first sensor (4), in particular a rotational speed sensor, supplies an alternating signal, which is present in the form of a sequence of sensor pulses (50) and pulse pauses (52) of predetermined duration, wherein in the pulse pauses (52) additional data (54) is transmitted as a bit sequence and wherein the bit sequence contains at least one free bit (56); a binary information sequence (60) comprising data from at least one further sensor (12, 14, 22, 30, 38a, 38b, 38c) is generated, which has a transmission length of a plurality of bits; and the data of the first sensor (4) and of the at least one further sensor (12, 14, 22, 30, 38a, 38b, 38c) is transmitted through a common data line (18) in that a processing unit (20) distributes the information sequence (60) to a plurality of chronologically sequential bit sequences and the at least one free bit (56) of the additional data (54) is assigned at least one bit

Abstract: The present invention employs a pilot scheme for frequency division multiple access (FDM) communication systems, such as single carrier FDM communication systems. A given transmit time interval will include numerous traffic symbols and two or more short pilot symbols, which are spaced apart from one another by at least one traffic symbol and will have a Fourier transform length that is less than the Fourier transform length of any given traffic symbol. Multiple transmitters will generate pilot information and modulate the pilot information onto sub-carriers of the short pilot symbols in an orthogonal manner. Each transmitter may use different sub-carriers within the time and frequency domain, which is encompassed by the short pilot symbols within the transmit time interval. Alternatively, each transmitter may uniquely encode the pilot information using a unique code division multiplexed code and modulate the encoded pilot information onto common sub-carriers of the short pilot symbols.

Abstract: Embodiments of the present invention disclose a method and an apparatus for transmitting data in a multiple-antenna system, which are applied in a transmit diversity mode. The method includes: in a data transmission period, determining, according to transmission quality of the system, the number of antennas to be turned off and turning-off time; and in the turning-off time, turning off the determined number of antennas, turning on remaining antennas other than the antennas that are turned off, and transmitting, through the remaining antennas, the data to be transmitted; and during the remaining time of the data transmission period excluding the turning-off time, turning on all antennas and transmitting, through all the antennas, the data to be transmitted. According to the embodiments of the present invention, power consumption may be decreased while at the same time dynamic transmission performance of the system is considered, decreasing implementation complexity.

Abstract: An HDMI signal adjusting method is provided. A method for adjusting an HDMI signal of a high definition multimedia interface (HDMI) signal receiving apparatus includes: setting an equalizer gain for an HDMI signal, receiving an HDMI signal which is adjusted according to signal adjustment information set by an HDMI signal transmitting apparatus from the HDMI signal transmitting apparatus, signal-processing the received HDMI signal according to the set equalizer gain, detecting an error rate of the signal-processed HDMI signal, and transmitting signal adjustment information corresponding to an HDMI signal having a lowest error rate from among a plurality of the signal-processed HDMI signals corresponding to a plurality of different combinations of the equalizer gain and the signal adjustment information to the HDMI signal transmitting apparatus.

Abstract: An apparatus relates generally to OFDM. In this apparatus, modulators are coupled to receive data inputs. Each of the modulators includes IDFT blocks coupled to output a first and a second N-point transform, and a 2N-point transform to provide discrete time domain signals for the data inputs. A switch and frequency translation block is coupled to receive the discrete time domain signals. RF ports are coupled to the switch and frequency translation block. The switch and frequency translation block is configured to allocate a combination of outputs from two or more of the IDFT blocks to a same RF port of the RF ports and to translate frequency of at least one of the outputs from the two or more of the IDFT blocks to provide the OFDM of the outputs from the two or more of the IDFT blocks onto the same RF port of the RF ports.

Abstract: A station in a wireless communication system includes a processor circuitry configured to form at least a first plurality of data streams and a second plurality of data streams, and a digital precoder configured to receive the first plurality of data streams and the second plurality of data streams. The wireless station can further include a plurality of radio frequency (RF) beamforming chains connected to the digital precoder and configured to form at least one RF envelope, wherein the digital precoder is configured to steer a plurality of digital beams within the at least one RF beam envelope, the digital beams forming a plurality of spatially distinct paths for the first plurality of data streams and a plurality of spatially distinct paths for the second plurality of data streams, and a plurality of antennas operably connected to the RF beamforming chains.