Abstract: Provided is a radio communication device which can reduce ISI caused by destruction of an orthogonal DFT matrix even when an SC-FDMA signal is divided into a plurality of clusters and the clusters are respectively mapped to discontinuous frequency bands. The radio communication device includes a DFT unit (110), a division unit (111), and a mapping unit (112). The DFT unit (110) uses the DFT matrix to execute a DFT process on a symbol sequence in a time region to generate a signal (SC-FDMA signal) of the frequency region. The division unit (111) generates a plurality of clusters by dividing the SC-FDMA signal with a partially orthogonal bandwidth corresponding to the vector length of some of the column vectors constituting the DFT matrix used in the DFT unit (110) and orthogonally intersecting at least partially. The mapping unit (112) maps the clusters to discontinuous frequency bands.

Abstract: A method and apparatus for processing a signal. The signal is received in a receiver system in a satellite. The signal has a range of frequencies in which information is carried in a number of channels having a number of frequencies within the range of frequencies. The number of frequencies for a channel in the number of channels changes within the range of frequencies over time. The signal is transmitted using a transmitter system in the satellite. The signal is unprocessed to identify the number of frequencies for the channel used to carry the information by the satellite.

Abstract: Systems and methodologies are described that facilitate frequency hopping in a single carrier FDMA wireless environment by dynamically altering user offsets with time to obtain interference diversity. A channel tree can be utilized with nodes that are assigned values. User devices can be assigned to such nodes, a path between an assigned node and a root node in the channel tree can be evaluated, and a table lookup can be performed to determine an identity of a subcarrier set to assign to the user device assigned to a given node, as well as a number of subcarriers to be assigned to the user device. Additionally, node values can be dynamically varied during a communication event to alter path values and thus alter subcarrier set assignments.

Abstract: A method for transmitting data packets in a communication network using a plurality of radio frequency channels, at least two of the radio frequency channels being concatenated to form a concatenated channel. The method includes: acquiring and reserving at least one of the channels from the concatenated channel, thus reserving a first frequency band for transmitting data packets to a first target device; acquiring and reserving channels from the concatenated channel that were unreserved during the first step of acquisition and reservation, thus reserving a second frequency band for transmitting data packets to a second target device; generating a preamble specific to a selected data packet, which includes a simultaneous transmission indicator on the first and second frequency bands; and simultaneously transmitting the data packets on the first and second frequency bands, from the selected packet and the specific preamble, before the selected packet on the second frequency band.

Abstract: A communication device for allocating tones is described that includes a processor and instructions in memory in electronic communication with the processor. The communication device determines whether a bandwidth for signal transmission is 20, 40, 80 or 160 megahertz (MHz). The communication device respectively allocates tones for 20, 40, 80 or 160 MHz as follows: for a very high throughput (VHT) signal A1 (VHT-SIG-A1): 52, 104, 208, 416; a VHT signal A2 (VHT-SIG-A2): 52, 104, 208, 416; a VHT short training field (VHT-STF): 12, 24, 48, 48; one or more VHT long training field(s) (VHT-LTF(s)): 56, 114, 242, 484; a VHT signal B (VHT-SIG-B): 56, 114, 242, 484; and a data field (DATA): 56, 114, 242, 484. The communication device also transmits the signal.

Abstract: This document discloses one or more systems, apparatuses, methods, etc. for implementing an algorithm to enhance channel allocation and/or channel location selection in a wireless connection environment.

Abstract: A reference signal multiplexing method for multiple mobile stations includes: grouping together control signals for the multiple mobile stations; and multiplexing reference signals corresponding to the control signals by CDM over the same bandwidth as that of grouped control signals.

Abstract: In one embodiment, a device in a frequency hopping communication network operate in a first mode according to a common broadcast schedule for the network that simultaneously overlays a first configured portion of all independently determined unicast listening schedules in the network. In response to determining a power outage condition, the device switches to operation in a power outage mode where the common broadcast schedule for the network in the power outage mode simultaneously overlays a second configured portion of all independently determined unicast listening schedules in the network, the second configured portion greater than the first configured portion. In one embodiment, the device broadcasts one or more power outage notifications (PONs) in response to determining the power outage condition as a reduction of a main power supply at the device. In another embodiment, the device receives a PON while powered as the power outage condition.

Abstract: A method and a system for calculating a JCMA constellation for use in a JCMA communication system where the method includes a step of using maximum sum-rate mutual information criterion to select an optimal JCMA constellation for the number of transmitters N, SNR and modulation schemes used by the transmitters.

Abstract: A method and system for transmitting three distinct electromagnetic signals on a same frequency are provided. One or more transmitting devices transmit a first data signal and an inverse of the first data signal in two orthogonal linear polarities of an antenna maintaining their inverted phase relationship and a same amplitude as propagated. Transmitting devices also transmit a second data signal in a linear polarity with a 45 degree rotation around the transmit axis of the first data signal. Transmitting devices also transmit a third data signal in linear polarity orthogonal to the second data signal and consequently 315 degree rotation around the transmit axis from the first data signal.

Abstract: A method for transmitting downlink data using resource blocks at a base station in a wireless mobile communication system includes transmitting downlink data mapped to physical resource blocks (PRBs) to a user equipment, wherein indexes of virtual resource blocks (VRBs) are mapped to indexes of the PRBs for a first slot and a second slot of a subframe, and the indexes of the PRBs for the second slot are shifted with respect to the indexes of the PRBs for the first slot based on a predetermined gap, and wherein a predetermined offset is applied to an index of a PRB when the index of the PRB is equal to or greater than a predetermined threshold.

Abstract: A receiver apparatus includes a first frequency response estimator configured to calculate a first frequency response estimation value using a reference signal, a duration extractor configured to determine an estimation duration by extracting at least one duration from among a plurality of duration candidates into which a predetermined maximum delay time is divided, and a second frequency response estimator configured to calculate a second frequency response estimation value as a frequency response estimation value for demodulation using the first frequency response and the estimation duration. The receiver apparatus thus performs high-precision channel estimation even if a variety of PDPs occur with time.

Abstract: A system for transmitting and receiving data includes a physical adaptation block configured to separate the data into a plurality of frequency bands. Each of the frequency bands has an associated symbol time, and each of the associated symbol times is a whole multiple of one half of a smallest symbol time of all of the frequency bands. An analog front end is configured to provide the data in the plurality of frequency bands to a transmission medium.

Abstract: A method of data transmission includes determining the number of layers, generating mapping symbols by mapping modulation symbols for a first codeword and modulation symbols for a second codeword to each layer, and transmitting the mapping symbols through a plurality of antennas. At least one of the first codeword and the second codeword is mapped to at least 3 layers and the number of layers is larger than 3.

Abstract: Systems, methods and apparatus are provided for scheduling resources in Orthogonal Frequency-Division Multiple Access (OFDMA) communication networks for “direct link” or peer-to-peer communications among stations operating therein so that OFDMA resources can be allocated to a transmitter station for a peer-to-peer communication session with a receiver station such that near-far issues caused by peer-to-peer communication are reduced/avoided. The disclosed technologies can prevent peer-to-peer communication links using different sub-channels within the same time slot from creating near-far issues for other receiver stations that are within communication range.

Abstract: Receiver synchronization techniques (RST), contributing more accurate synchronization of receiver clock to OFDM composite frame combined with much faster acquisition time and better stability of the receiver clock, and phase and frequency recovery techniques, comprising a software controlled clock synthesizer (SCCS) for high accuracy phase & frequency synthesis producing synchronized low jitter clock from external time referencing signals or time referencing messages wherein SCCS includes a hybrid PLL (HPLL) enabling 1-50,000 frequency multiplication with very low output jitter independent of reference clock quality.

Abstract: Methods and apparatus are described for providing compatible mapping for backhaul control channels, frequency first mapping of control channel elements (CCEs) to avoid relay-physical control format indicator channel (R-PCFICH) and a tree based relay resource allocation to minimize the resource allocation map bits. Methods and apparatus (e.g., relay node (RN)/evolved Node-B (eNB)) for mapping of the Un downlink (DL) control signals, Un DL positive acknowledgement (ACK)/negative acknowledgement (NACK) and/or relay-physical downlink control channel (R-PDCCH) (or similar) in the eNB to RN (Un interface) DL direction are described. This includes time/frequency mapping of above-mentioned control signals into resource blocks (RBs) of multimedia broadcast multicast services (MBMS) single frequency network (MBSFN)-reserved sub-frames in the RN cell and encoding procedures for these.

Abstract: A method and apparatus for managing UE-based network performance measurements utilizing a process of tracing a UE in a radio telecommunication network. An eNB may receive a trace activation message from a Mobility Management Entity, MME, or a Network Management Entity, wherein the trace activation message includes eNB-specific, and optionally MME-specific, selection conditions for selecting a UE for a trace session. The eNB selects a UE for tracing when the eNB-specific selection conditions are satisfied, and may send the MME-specific selection conditions to the MME for evaluation. When all selection conditions are satisfied, the eNB activates the trace session with the selected UE. The Trace Activation IE utilized in the Trace Start message, the UE Context Setup Request message, and the Handover Request message is extended with additional IEs in order to implement the method.

Abstract: Provided are a base station, a terminal, a band allocation method, and a downlink data communication method in which a mapping method for synchronization signals and report signals is implemented with high resource usage efficiency when a first system in which an independent single communication is allocated to a unit band co-exists with a second system in which a plurality of unit bands can be allocated to a single communication. In a base station (200), an OFDM signal generation unit (225) maps primary synchronization channel (P-SCH), secondary synchronization channel (S-SCH), primary broadcast channel (P-BCH), and dynamic broadcast channel (D-BCH), which can be decoded by both an LTE terminal and an LTE+ terminal, to some of a plurality of unit bands available to the station itself. The OFDM signal generation unit (225) also maps D-BCH+, which can be decoded only by an LTE+ terminal, to all of the plurality of unit bands to produce a multiplexed transmission signal.

Abstract: The present invention relates to a wireless communication system, and provides a method and an apparatus for transmitting a downlink reference signal in the wireless communication system. The method for enabling a base station to transmit the reference signal to a terminal using layers of 8 or less in accordance with one embodiment of the present invention comprises the steps of: transmitting data for the layers of 8 or less through a data domain of a downlink sub frame; and transmitting a reference signal for the layers of 8 or less on a fixed OFDM symbol of the downlink sub frame, wherein the reference signal is a DRS (Dedicated Reference Signal) which demodulates the data for the layers of 8 or less, and the reference signal for the layers of 8 or less is separated into 1st and 2nd groups, and reference signals of the 1st and 2nd groups can be multiplexed in a CDM (Code Division Multiplexing) method on one resource element, respectively.

Abstract: The present invention relates to a wireless communication system. The present invention relates to a method for transmitting ACK/NACK in a wireless communication system in which carrier aggregation is set, and an apparatus therefor. Specifically, the present invention relates to an ACK/NACK transmission method and an apparatus therefor, the method comprising the steps of: receiving information on a plurality of physical uplink control channel (PUCCH) resources via upper layer signaling; receiving a transmit power control (TPC) field on a secondary carrier through a physical downlink control channel (PDCCH); receiving data indicated by the PDCCH; and transmitting ACK/NACK for the data, wherein the ACK/NACK is transmitted using a PUCCH resource which is indicated by the value of the TPC field among the plurality of PUCCH resources.

Abstract: A satellite communication system comprising a hub and plurality of terminals may be divided into multiple segments, wherein each segment may support part of the terminals. A method for decentralized balancing of traffic between the system segments is presented herein. One segment in each coverage beam may be designated as home carrier and include load balancing information. The terminals may be configured to tune on a home carrier, receive the load balancing information and then use it for selecting a least loaded segment on which they may remain operational until reset or powered off. In some embodiments of the invention, said load balancing information may be used for calculating relative probabilities for selecting segments through a weighted random selection algorithm.

Abstract: The present invention relates to a wireless communication system, and more particularly, to a method and apparatus for transmitting a downlink reference signal in a wireless communication system that supports multiple antennas. A method for transmitting channel state information-reference signals (CSI-RS) for two or more antenna ports according to one embodiment of the present invention comprises the steps of: mapping the CSI-RSs for the two or more antenna ports in predetermined patterns on a data region of a downlink subframe: an transmitting the downlink subframe mapped with the CSI-RSs for the two or more antenna ports, wherein the predetermined patterns are defined as patterns differing by a cell, and the different patterns may be defined as the predetermined patterns being shifted in a temporal range, frequency range, or a temporal range and a frequency range.

Abstract: To perform rank adaptation for a mobile station in a wireless network, it is determined whether the mobile station is fast moving. In response to determining that the mobile station is fast moving, an open loop multi-antenna mode is selected to perform wireless communication between the mobile station and a base station. Also, selection is made from among plural ranks for the wireless communication according to the open loop multi-antenna mode between the mobile station and the base station.

Abstract: A intelligent backhaul radio is disclosed, which can operate by zero division duplexing for use in PTP or PMP topologies, providing for significant spectrum usage benefits among other benefits. Specific system architectures and structures to enable active cancellation of multiple transmit signals at multiple receivers within a MIMO radio are disclosed. Further disclosed aspects include the adaptive optimization of cancellation parameters or coefficients.

Abstract: A method for mapping wireless resources of reference symbols for channel state estimation and modulation symbols for user information transmission in a transmitter of an Orthogonal Frequency Division Multiplexing (OFDM) mobile communication system is disclosed. The mapping method includes channel-encoding and modulating a user information stream to be transmitted, and then generating a systematic symbol stream and a parity symbol stream; and preferentially arranging systematic modulation symbols in resource elements of a symbol including no reference symbol, and then arranging parity modulation symbols in remaining resource elements.

Abstract: Techniques are provided to support soft handoff in a frequency hopping OFDMA system. Each sector concurrently supports “non-handoff” users and “soft-handoff” users. A non-handoff user communicates with only one sector, and a soft-handoff user communicates with multiple sectors simultaneously. Non-handoff users are assigned traffic channels by their sole sectors, and soft-handoff users are assigned traffic channels by their “serving” sectors. For each sector, the traffic channels assigned to the non-handoff users are orthogonal to one another and may or may not be orthogonal to the traffic channels assigned to the soft-handoff users. Each sector processes its received signal and recovers the data transmissions from the non-handoff users of that sector. Each sector then estimates the interference due to the non-handoff users and cancels the interference from the received signal. Each sector further processes its interference-canceled signal to recover the data transmissions from the soft-handoff users.

Abstract: In accordance with some embodiments of the present disclosure, a method may include determining a range of frequencies allocated to resource blocks to be transmitted during a subsequent sub-frame slot or sounding reference symbol sub-slot. The method may also include determining an approximate center frequency of the range of frequencies. The method may additionally include modulating resource blocks of the sub-frame or sounding reference symbol sub-slot at the approximate center frequency. The method may further include transmitting the modulated resource blocks at the approximate center frequency.

Abstract: In a signal coding method, bits for coding allocated to different bands of a frequency domain signal obtained from an input signal are adjusted to improve the coding quality. The total available bits for coding are first allocated to the bands of the frequency domain signal according to a predetermined allocation rule. The numbers of bits allocated to the respective bands of the frequency domain signal are then adjusted when a highest frequency of the frequency domain signal to which bits are allocated is greater than a predetermined value. The frequency domain signal is coded according to the adjusted bit allocation for the bands of the frequency domain signal.

Abstract: The disclosed embodiments relate to a system for providing remote tuning and clock synchronization in a network. The system includes a device that receives a signal that includes a plurality of channels, a device that receives a user request indicative of a desire to view at least one of the plurality of channels, and a filter that filters the received signal and transmits a user signal corresponding to the at least one of the plurality of channels to the user.

Abstract: Provided is a radio communication station device which can prevent limiting of resource allocation in a UE group. The radio communication device includes: a CCE allocation unit (104); modulation units (103-1 to 103-K); an arrangement unit (108); and a radio transmission unit (111). The CCE allocation unit (104) allocates allocation information allocated to a PDCCH which is inputted from the modulation unit (103-1 to 103-K) as follows. Among a plurality of search spaces shared by a greater number of UE groups as the CCE aggregation size of the PDCCH increases, a particular search space corresponding to the CCE aggregation size of the PDCCH and a mobile group (UE group) of the PDCCH is selected as a space to which the allocation information is to be allocated. The arrangement unit (108) arranges the allocation information in a downlink resource corresponding to the CCE of the particular search space allocated among the downlink resources secured for the PDCCH.

Abstract: A channel scanning method for Digital Video Broadcasting-Satellite (DVB-S) signals is provided. The method includes: scanning a radio frequency (RF) signal according to a normal frequency step; when the Nth channel is detected, obtaining a difference between a low boundary of an Nth channel and a high boundary of an (N?1)th channel; and, when the difference is within a predetermined bandwidth range, scanning the RF signal between the high boundary of the (N?1)th channel and the low boundary of the Nth channel according to a narrow frequency step. The normal frequency step is greater than the narrow frequency step.

Abstract: To perform wireless communications in a closed loop multiple input, multiple output (MIMO) system, a feedback data structure is communicated over a wireless channel between a first wireless node and a second wireless node, where the feedback data structure contains indicators identifying coding to be applied by the second wireless node on signaling communicated between the second wireless node and the first wireless node, where the information in the feedback data structure is based on wireless channel conditions detected at the first wireless node. The indicators identify different codings to be used for different corresponding bands in the wireless channel.

Abstract: Data communications systems and methods comprise a conductive media infrastructure in communication with a baseband data universe propagating at least one first signal and a broadband data universe propagating at least one second signal. At least one segmentation device is in communication with the conductive media infrastructure and partitions the broadband data universe from the baseband data universe. A coupling device is in communication with the at least one segmentation device and modulates transmission parameters of the second signal such that information travels within the broadband data universe via the conductive media infrastructure and avoids the baseband data universe. Power distribution and management systems and methods are also provided which preserve power distribution via a baseband data universe while one or more devices communicate energy data via a broadband data universe.

Abstract: A system for signaling an application when a requested data rate and Quality of Service cannot be achieved using OFDM wireless data transmission, and the application proceeds by either renegotiating QoS and data rate, or waiting until they requested rate and QoS are met.

Abstract: A method and device for receiving a non-synchronous signal in an Orthogonal Frequency Division Multiple Access (OFDMA) system are provided. The method includes the following steps. Fourier transform is performed on a received first time domain signal to acquire a corresponding frequency domain signal. A sub-carrier occupied by a band of a non-synchronous signal to be received in the frequency domain signal is set to zero, inverse Fourier transform is performed on the frequency domain signal to acquire a second time domain signal, and the second time domain signal is subtracted from the first time domain signal. Or, the sub-carrier other than the sub-carrier occupied by the band of the non-synchronous signal to be received in the frequency domain signal is set to zero, and inverse Fourier transform is performed on the frequency domain signal to acquire a time domain received signal corresponding to the band of the non-synchronous signal.

Abstract: In general, the subject matter described in this disclosure can be embodied in methods, systems, and program products for transmitting data over discontiguous portions of radio frequency spectrum. Data that is to be wirelessly transmitted to a remote computing device is received. A first signal that encodes the data across a band of radio frequencies is generated. The first signal is split into multiple signals, each of the multiple signals being associated with a different portion of the band of radio frequencies. Each of the multiple signals is filtered to isolate each respective one of the multiple signals to its associated portion of the band of radio frequencies. At least one of the multiple signals is frequency translated. Each of the multiple signals are combined after the filtering of each of the multiple signals. The second signal is provided for wireless transmission by an antenna.

Abstract: Provided are a base station, a terminal, a band allocation method, and a downlink data communication method in which a mapping method for synchronization signals and report signals is implemented with high resource usage efficiency when a first system in which an independent single communication is allocated to a unit band co-exists with a second system in which a plurality of unit bands can be allocated to a single communication. In a base station (200), an OFDM signal generation unit (225) maps primary synchronization channel (P-SCH), secondary synchronization channel (S-SCH), primary broadcast channel (P-BCH), and dynamic broadcast channel (D-BCH), which can be decoded by both an LTE terminal and an LTE+ terminal, to some of a plurality of unit bands available to the station itself. The OFDM signal generation unit (225) also maps D-BCH+, which can be decoded only by an LTE+ terminal, to all of the plurality of unit bands to produce a multiplexed transmission signal.

Abstract: Provided are a base station, a terminal, a band allocation method, and a downlink data communication method with which bands can be efficiently allocated. In a base station (200) in which a plurality of unit bands can be allocated to a single communication, when a data receiver (260) acquires terminal capability information transmitted by a terminal (100) in the initial access unit band and the bandwidth available for communication indicated by the terminal capability information can accommodate a plurality of unit bands, a unit band group which includes the initial access unit band as well as the unit bands adjacent thereto is allocated to the terminal (100), and a communication band movement indication, which indicates the movement of the center frequency in the communication band of the terminal (100) toward the center frequency in the unit band group, is transmitted to the terminal (100) using the initial access unit band.

Abstract: A network signals an allocation (PDCCH) for a downlink shared channel (PDSCH); and also signals an indication (reference signal RS) whether a resource block (PRB) comprising the allocated downlink shared channel is used for a control channel transmission (E-PDCCH). Examples include the E-PDCCH being time or frequency multiplexed with the PDSCH; and the indication being a different RS sequence (at least one element being phase shifted) than an original RS sequence used if the PRB were not used for the E-PDCCH. The UE tests for the phase shift by blind decoding. If the phase shift is present the UE a) decodes a portion of the PRB for data if the network is using TDM for its E-PDCCH/PDSCH multiplexing, orb) decodes the full PRB only for the E-PDCCH if the network is using FDM for its E-PDCCH/PDSCH multiplexing.

Abstract: The present invention relates to a wireless communication system. The present invention relates to a method for transmitting ACK/NACK in a wireless communication system in which carrier aggregation is set, and an apparatus therefor. Specifically, the present invention relates to an ACK/NACK transmission method and an apparatus therefor, the method comprising the steps of: receiving information on a plurality of physical uplink control channel (PUCCH) resources via upper layer signaling; receiving a transmit power control (TPC) field on a secondary carrier through a physical downlink control channel (PDCCH); receiving data indicated by the PDCCH; and transmitting ACK/NACK for the data, wherein the ACK/NACK is transmitted using a PUCCH resource which is indicated by the value of the TPC field among the plurality of PUCCH resources.

Abstract: A method and system is provided for communicating four distinct data signals over a single frequency. Data signals carrying first and second data are polarized in two distinct circular polarities and are transmitted. Signals consisting of third data signal and a 180 degree out of phase equal amplitude inverse of third data signal are transmitted together in two orthogonal linear polarities. Signals consisting of fourth data signal and of 180 degree out of phase equal amplitude inverse of said fourth data signal are transmitted together in two orthogonal linear polarities and at a 45 degree rotation from said third data signals. The circular signals are received without interfering linear signals since the inverse linear signals cancel in the circularly polarized antenna at reception. A method for canceling the interfering circular signals from the linear signals is disclosed. The amount of distinct data transmitted over the single frequency is doubled.

Abstract: The present invention provides a method for Sounding Reference Signal (SRS) resource allocation in a Long Term Evolution (LTE) system, including: a system side setting different SRS transmission periods to correspond to different cycle shifts, and during the process of allocating SRS resources for user equipment (UE), setting a cycle shift adopted by the UE according to the SRS transmission period adopted by the UE. The method and apparatus of the present invention realize simple and effective SRS resource multiplexing with high utilization ratio among UEs with different periods.

Abstract: The technology in this application compresses multi-antenna complex-valued signals by exploiting both a spatial and a temporal correlation of the signals to remove redundancy within the complex-valued signals and substantially reduce the capacity requirement of backhaul links. At a receiver, the compressed signal is received, and a decompressor decompresses the received signal over space and over time to reconstruct the multiple antenna stream.

Abstract: A particular overall architecture for transmission over a bonded channel system consisting of two interconnected MoCA (Multimedia over Coax Alliance) 2.0 SoCs (Systems on a Chip) and a method and apparatus for the case of a “bonded” channel network. With a bonded channel network, the data is divided into two segments, the first of which is transported over a primary channel and the second of which is transported over a secondary channel.

Abstract: Disclosed is a method for requesting and feeding back a multimedia broadcast multicast service (MBMS) state, the method being used for allowing a network side to inform a related user equipment (UE) to feed back MBMS state information and allowing the informed UE to feed back the MBMS state information. The request method comprises: when necessary to acquire the receiving state of an MBMS, a base station transmits, through a physical downlink control channel (PDCCH) scrambled by a radio network temporary identifier (RNTI) belonging specially to an MBMS service, or through a system message, a multicast control channel (MCCH) change notification to the UE; and the base station transmits an MBMS state report request to the UE through the changed MCCH. The present invention also discloses a device for implementing the method.

Abstract: The invention relates to a method for evaluating the usability of a sub-carrier of a BPL (broadband power-line) signal, in particular in order to avoid mutual influencing of the BPL signal and a further signal, wherein the BPL signal has a plurality of sub-carriers and one symbol can be transmitted in each of the sub-carriers. The method comprises the following steps: extracting a received value y[k] from a sub-carrier of a received BPL signal, rectifying the received value y[k] using an estimated transfer function ? of the transmission channel, deciding on a symbol d[k] that is coded in the received value y[k], distorting the symbol d[k] using the estimated transfer function ? of the transmission channel, calculating a difference between the received value y[k] and the processed signal d[k]·? and deciding on the usability of the sub-carrier on the basis of the difference y[k]?d[k]·?.

Abstract: An MBMS-GW delivers multicast data from a contents management server respectively to base stations, partitions and codes the multicast data into a plurality of pieces of multiple description code data, and delivers the plurality of pieces of MD-code data respectively to the base stations. Each of the base stations arbitrarily sets a plurality of transmission carrier frequencies for respectively transmitting the plurality of pieces of MD code data, and concurrently transmits the plurality of pieces of MD code data delivered from the MBMS-GW by respectively using the plurality of transmission carrier frequencies set by the transmission frequency setting unit. An LTE terminal or an LTE-A terminal receives, from a corresponding base station, any one or more of the plurality of pieces of MD code data transmitted by using the plurality of transmission carrier frequencies, and decodes and reproduces the multicast data from the received MD-code data.

Abstract: A receiver receives, using a plurality of antennas, a multiplexed signal that includes (i) a first OFDM modulation signal with a subcarrier carrying a symbol including multiplex information and a subcarrier carrying a pilot symbol and a subcarrier carrying a data symbol and (ii) a second OFDM modulation signal with a subcarrier carrying a symbol including multiplex information and a subcarrier carrying the pilot symbol and a subcarrier carrying the data symbol. A decoder uses the symbol including multiplex information and decodes the data symbol.

Abstract: Techniques for transmitting information in a wireless network are described. In an aspect, information may be conveyed based on specific resources used to send a signal, e.g., a pilot. A pseudo-random function may receive the information to convey via the signal and possibly other information and may provide pseudo-random values, which may be used to select the resources to use to send the signal. In one design, a transmitter (e.g., a base station for a sector) may determine first information (e.g., a sector ID) to convey via a pilot and may also determine second information for absolute time (e.g. a pilot cycle index). The transmitter may determine resources (e.g., slots) to use to send the pilot based on the first and second information and possibly based further on a PN offset assigned to the sector. The transmitter may transmit the pilot in the determined resources.