Abstract: A system may include at least one antenna for receiving a first receive signal having a first signal diversity property and a second receive signal having a second signal diversity property. A first signal path may include a first frequency converter for downconverting the first receive signal to a first intermediate frequency signal having a first intermediate frequency. A second signal path may include a second frequency converter for downconverting the second receive signal to a second intermediate frequency signal having a second intermediate frequency. A transducer module may route the first receive signal to the first signal path, and route the second receive signal to the second signal path. A first N-plexer may select the first intermediate frequency signal or the second intermediate frequency signal for transmission to a cable, and to provide a data signal based on a selected intermediate frequency signal to the cable.

Abstract: A decoding method applied to a convolutionally coded signal is provided. The method includes: adjusting first input information according to a first scaling factor to generate first a-priori information; b) decoding the convolutionally coded signal according to systematic information and the first a-priori information to generate first extrinsic information; c) adjusting second input information according to a second scaling factor to generate second a-priori information, wherein the second scaling factor is generated according to the first extrinsic information and the first a-priori information; and d) decoding the convolutionally coded signal according to the systematic information and the second a-priori information to generate second extrinsic information. One of step (b) and step (d) further generates a-posteriori information as a decoding result.

Abstract: An approach is provided for increasing transmission throughput rates for a source signal transmitted over a wireless channel, applying faster-than-Nyquist (FTN) signaling rates combined with tight frequency roll-off to the a source signal. A receiver is provided that compensates for ISI effects induced by the FTN rate and tight frequency roll-off, where the complexity of the receiver grows only linearly with the interference memory. The receiver comprises an equalizer configured to compensate for the ISI effects, and a decoder configured to decode the output of the equalizer to determine and regenerate the source signal. The receiver processes the received signal via a plurality of processing iterations. For one processing iteration, the decoder generates a set of a posteriori soft information based on the output of the equalizer, and the equalizer uses the a posteriori soft information as a priori soft information for a subsequent processing iteration.

Abstract: A multimedia synchronization system used in a wireless local area network is provided. The multimedia synchronization system includes a first multimedia device and a second multimedia device. The first multimedia device wirelessly transmits a beacon, in which the beacon includes a timestamp. The second multimedia device is connected to the first multimedia device through the wireless local area network for receiving the beacon from the first multimedia device and synchronizing with the first multimedia device according to the timestamp of the beacon.

Abstract: A carrier generator includes a phase accumulator configured to receive a frequency command word (FCW) signal. The carrier generator includes an adder connected to the phase accumulator; and a loop filter configured to receive an output of the adder. The carrier generator includes a plurality of tuning arrangements, each tuning arrangement is configured to receive an output of the loop filter. Each tuning arrangement includes an electronic oscillator configured to receive the output of the loop filter. Each tuning arrangement includes a voltage controlled delay line (VCDL) configured to receive an output of the electronic oscillator, and to provide a tuning arrangement output. Each tuning arrangement includes a phase detector configured to receive a corresponding recovered clock signal and a feedback from a corresponding tuning arrangement output. Each tuning arrangement includes a counter configured to receive an output of the phase detector and to provide an output to the VCDL.

Abstract: A phased array receiver for use with a first received analog signal and a second received analog signal, the phased array receiver including: a first analog to digital converter to generate a first received digital signal; a second analog to digital converter to generate a second received digital signal; a first down-sampler to generate a first down-sampled digital signal; a second down-sampler to generate a second down-sampled digital signal; a first polyphase low pass filter to generate a first filtered down-sampled received digital signal; a second polyphase low pass filter to generate a second filtered down-sampled received digital signal; and a beamforming core to generate a beamformed signal, wherein the first received signal is related to the first filtered down-sampled received digital signal, and wherein the second received signal is related to the second filtered down-sampled received digital signal.

Abstract: A system includes a crest-factor reduction circuit, a signal analyzer, and a pre-distortion circuit. The crest-factor reduction circuit reduces a crest factor of a baseband signal and generates a feedforward signal. The signal analyzer generates parameters based on the feedforward signal and an output signal from a power amplifier. The pre-distortion circuit generates a pre-distorted baseband signal based on the parameters for input to the power amplifier.

Abstract: An approach is provided for optimizing the use of a device based on the subscriptions and contextual information associated with the device. The optimizing platform determines at least one request to perform one or more activities associated with at least one device. The optimizing platform processes and/or facilitates a processing of the at least one request against one or more conditions of one or more subscriptions associated with the at least one device to cause, at least in part, a recommendation of at least one of the one or more subscriptions for performing the one or more activities.

Abstract: A power line communication modem is provided including a transmitter configured to transmit a power line signal on at least one carrier of a plurality of carriers via a power line to a further power line communication modem; and a processor configured to allocate transmit powers to individual carriers of the plurality of carriers, wherein the sum of the transmit powers of individual carriers located in the first frequency range is below or equal to a first predetermined power maximum value for the first frequency range. A corresponding power line communication system and a power line communication method are provided as well.

Abstract: A method for processing one or more received radio signals is provided. The method may include performing a channel estimation of a transmission channel for at least a portion of the one or more radio signals received, to identify at least one soft channel parameter representing a channel impulse response of the transmission channel, and identifying at least one soft intercarrier interference parameter representing an interference for the one or more radio signals received using a first frequency carrier. The interference is caused by the one or more radio signals received using a second frequency carrier. The method may further include detecting soft data from the one or more radio signals based at least on the at least one soft channel parameter and the at least one soft intercarrier interference parameter.

Abstract: One embodiment of the disclosure relates to supporting distinct single-input single-output (SISO) services in a multiple-input multiple-output (MIMO) baseband circuit, particularly suited for a distributed antenna system (DAS). In this regard, in one aspect, two communication paths in the MIMO baseband circuit are reconfigured to distribute two distinct SISO signals. A quadrature modulator modulates the two distinct SISO signals to two different radio frequency (RF) bands, respectively, based on a modulation frequency. In another aspect, the two or more distinct SISO signals are provided to the quadrature modulator using two intermediate frequencies (IFs) that are determined based on the center frequencies and bandwidths of the two different RF bands. By reconfiguring the MIMO baseband circuit to distribute the two distinct SISO signals, it is possible to retro-support new wireless communication services and/or new RF bands in existing DAS installations without replacing the MIMO baseband circuit.

Abstract: There is to provide a communication device capable of reducing the power consumption. The communication device includes a battery and a transmission circuit for transmitting a signal of a desired transmission frequency upon receipt of a power supply from the battery. The transmission circuit includes a first oscillator for oscillating a signal, an amplifier for amplifying the signal oscillated by the first oscillator, and a filter circuit for eliminating a harmonic component included in the signal output from the amplifier. The filter circuit includes an extracting unit for extracting a frequency signal of n (n?2) times frequencies of the transmission frequency from the signal output from the amplifier and a recovery unit for recovering the battery with DC component of the extracted n times frequency signal.

Abstract: Systems and associated methods for reciprocity calibration of multiple-input multiple-output (MIMO) wireless communication are disclosed herein. In one embodiment, a method for reciprocity calibration of the MIMO system includes transmitting a pilot symbol by a transmitter (TX) of the reference antenna and receiving the pilot symbol by receivers (RXes) of antennas of a base station as ri,0 pilot symbols. (Index “i” denotes individual antenna “i” of the base station, and “0” denotes the reference antenna.) The method further includes transmitting the received pilot symbols by TXes of the antennas of the base station, receiving the pilot symbols transmitted by the antennas of the base station by the reference antenna as r0,i pilot symbols, and calculating non-reciprocity compensation factors as r i , 0 r 0 , i .

Abstract: An apparatus for receiving signals in a radio frequency system includes a low noise amplifier that amplifies and filters a signal received from an antenna; a first frequency mixer that mixes the signal output from the low noise amplifier and an oscillation signal supplied from a local oscillator to create a signal of an intermediate frequency; a second frequency mixer that mixes the signal of an intermediate frequency and one or more oscillation signals that have an offset added to have different frequency channels, which have a predetermined bandwidth, to create one or more signals of a baseband frequency; a channel selection filter that divides one or more signals generated in the second frequency mixer into one or more different frequency channels having a predetermined bandwidth using the offset; and an amplifier that amplifies the signals that have been filtered in the channel selection filter.

Abstract: Certain aspects of a method and system for wireless communication are disclosed. Aspects of one method may include a receiver that handles wireless communication. The receiver may be enabled to dynamically vary spacing between two or more pilots and/or the size of one or more pilots within at least one frame based on a determined symbol rate.

Abstract: An embodiment for a method for user equipment assisted three-dimensional beamforming is disclosed. The method may include the user equipment receiving a reference signal from an eNodeB comprising an antenna. The user equipment may then calculate an optimum antenna tilt for the antenna and transmit feedback to the base station. The feedback may include an indication of the optimum antenna tilt for the antenna. Additional signals may be received from the base station after a transmit angle of the antenna has been adjusted in response to the optimum antenna tilt.

Abstract: One embodiment provides an apparatus. The apparatus includes a feedforward equalizer (FFE), an FFE data slicer and an FFE least mean square (LMS) module. The FFE data slicer is to threshold detect a sample of a received analog training signal, a result of the threshold detecting corresponding to an input signal digital decision. The FFE LMS module is to determine a plurality of FFE coefficients based, at least in part, on an output of the FFE data slicer and based, at least in part, on a mean square error corresponding to a difference between an equalized sample and a reference.

Abstract: A method for transmitting data in a multiple input multiple output (MIMO) wireless communication system is disclosed. The method for transmitting a signal to a receiver by a transmitter in a multiple input multiple output (MIMO) wireless communication system includes: generating a bit stream having the size of specific bits through channel coding of data; dividing the bit stream into a first bit stream having a first bit size and a second bit stream having a second bit size; allocating the second bit stream having the second bit size to an antenna sequence codeword on the basis of a signal transmission time; and transmitting the first bit stream having the first bit size to the receiver according to an order of antenna pairs indicated by the allocated antenna sequence codeword.

Abstract: A digital wireless transmitter and a method of transmitting a high-power modulated RF signal using a digital wireless transmitter are provided. In one embodiment, the transmitter includes: a digital system-on-a-chip configured to receive a complex digital input signal and having: an all-digital phase-locked loop and digital pulse modulator configured to modulate a phase and frequency modulation signal based on the complex digital input signal to yield a modulated complex signal, a driver configured to generate a pulse-position-modulated and pulse-width-modulated pulse train based on an instantaneous phase and amplitude of the modulated complex signal and a power supply modulation control block configured to develop an amplitude modulation control signal based on the complex digital input signal that defines a non-constant-envelope for an output signal of the transmitter.

Abstract: The present invention relates to a method and device for performing automatic gain control. The method comprises predicting an AGC setting to be used based on statistical data with respect to a plurality of previously stored AGC settings. The method also comprises receiving an interference signal during an idle time period using the predicted AGC setting. The method further comprises detecting received power of the interference signal. The method additionally comprises adjusting the predicted AGC setting based on a result of the detecting. With the method and device of the present invention, an initial AGC setting with high accuracy and usability can be obtained and the glitch effect can be overcome.