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9036727 Method of generating a codebook  
A precoding codebook matrix/vector of length 2L is generated by the selection of two matrices/vectors, each from one of a predetermined set of L×L matrices and multiplying each column of one of...
9036738 Receiving device and receiving method  
A receiving device including: a demodulation circuit configured to generate first likelihood data of reception symbols based on a transmission format of the reception symbols, the transmission...
9025684 Method for generating and transmitting a reference signal for uplink demodulation in a clustered DFT-spread OFDM transmission scheme  
Disclosed is a method for generating and transmitting a reference signal in a clustered DFT-spread OFDM transmission scheme. A method for generating and transmitting a DM-RS in a clustered...
9025430 System and method of modulation and coding scheme adjustment for a LTE shared data channel  
A system, method and node for modulation and coding scheme adjustment for a Long Term Evolution (LTE) shared Data Channel. The method determines an actual number of orthogonal frequency division...
9025686 Method, radio unit and radio base station for adjusting thresholds for crest factor reduction  
The present invention relates to clipping thresholds adjustment for Crest Factor Reduction CFR in a radio unit, wherein the radio unit comprises one or more clipping stages that apply respective...
9025683 Channel state information transmission method appraratus and system  
A precoding method, a precoding apparatus, a Frequency Domain Equalization (FDE) method, and an FDE apparatus are provided in the embodiments of the present invention. The precoding method...
9025709 Receiver front-end circuit, communication unit and method therefor  
A receiver front end circuit includes a low-noise amplifier including: a first receiver path having: a first low-noise transconductor to amplify a received signal and output the amplified received...
9014308 Channel estimation using cascaded one-dimensional filtering in odd-order and even-order frequency bins  
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...
9008201 Robust HARQ-ACK design for MF-HSDPA  
When a UE (12) is configured with MF-HSDPA and HARQ-ACK information associated with cells (14, 16) (characterized by potentially different downlink timing) is jointly encoded, only part of the...
9008234 Apparatus for transmitting and receiving a signal and method for transmitting and receiving a signal  
A method for transmitting and receiving a signal and an apparatus for transmitting and receiving a signal are disclosed. The method includes receiving the signal from a first frequency band in a...
9008236 Communication signal decoding and soft demapping  
Symbol detection and soft demapping methods and systems are provided. Individual subset symbol detection according to one or more embodiments involves identifying a search subset of a transmission...
9008241 Low complexity near optimal two spatial stream maximal likelihood detector  
Methods, apparatuses, and systems are provided for generating a candidate search set for ML detection of 2n-QAM signals transmitted on two or more MIMO spatial streams. A method includes...
9001911 Discrete multi-tone systems for half-duplex IP links  
A DMT system for a half-duplex two-way link carries Internet protocol encoded video stream on a coaxial cable that also carries a baseband rendition of the same video stream. A plurality of...
9001912 Measuring channel signal to noise metric using constellation data  
Described are systems and methods of estimating a Signal-to-Noise (S/N) ratio of an input channel carrying a QAM signal. A Modulation Error Ratio (MER) is calculated for the input QAM signal, but...
9001913 Power saving idle data transmission units  
A method implemented in a multicarrier transmission system, the method comprising generating a plurality of constellation points by using one or more constellation mappers to map a plurality of...
8995581 Apparatus and method for soft demapping  
Provided are a soft demapping apparatus and method that may cancel interference included in a rotated quadrature amplitude modulation (QAM) signal, using at least one interference cancellation...
8995545 Base station and method for transmitting control information to a user equipment (UE)  
A method for transmitting to a UE control information comprising: channelization-code-set information (xccs,1, xccs,2, . . . , xccs,7); modulation-scheme and number of transport blocks information...
8995295 Using maximal sum-rate mutual information to optimize JCMA constellations  
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...
8995546 Software defined radio  
A software defined radio is disclosed. The software defined radio may utilize a method for encoding a bit stream into non-periodic spiral-based symbol waveforms for transmission and reception. The...
8971465 Receiver-side estimation of and compensation for signal impairments  
A receiver receives a repeating or periodic signal and, based on the signal, estimates a carrier frequency offset for the receiver. Based on the signal and the estimated carrier offset, an I/Q...
8971433 Compressive wireless modulation  
A projection code is applied to encode symbols as weighted arithmetic sums of approximately random subsets of binary source bits. Pairs of the symbols are combined to form constellation points,...
8972836 Method and system for forward error correction decoding with parity check for use in low complexity highly-spectrally efficient communications  
A receiver receives an inter-symbol correlated (ISC) signal with information symbols and a corresponding parity symbol. Values of information symbols are estimated utilizing parity samples that...
8964813 Receiver of binary offset carrier (BOC) modulated signals  
Binary Offset Carrier (BOC) is the agreed modulation for signals of next generation Global Navigation satellite systems (GNSS). Compared to current phase shift keying (PSK) modulation by a code,...
8965290 Amplitude enhanced frequency modulation  
Methods and systems for transmitting a spectrally efficient signal. The method includes frequency modulating an input signal in a transmitter to generate a first frequency modulated (FM) signal...
8964902 Method and apparatus for eliminating direct current offset  
The present invention provides a method and an apparatus for eliminating direct current offset. The method comprises the steps of: calculating Euclidean distances between every two demodulation...
8958492 Data transmission method, data reception method, data modulation device, data demodulation device  
By using circularly-arranged signal points obtained by rearranging a part of signal points arranged in a rectangular shape or a cross shape, average signal power and peak signal energy are reduced...
8953696 Signal decoding systems  
We describe an ultra wideband (UWB) orthogonal frequency division multiplexed (OFDM) modified dual carrier modulation (MDCM) decoder comprising: first and second inputs to input first and second...
8948286 Wireless communication system mapping data bits to symbol bit positions according to error rates of those bit positions and data content  
A transmitter-receiver pair encode data as transmitted symbols according to knowledge about variations in noise immunity between different bit positions of the symbols as a decoded. High...
8948293 Downlink multiple input multiple output enhancements for single-cell with remote radio heads  
A base station selects a subset of at least one geographically separated antennas for each of the plurality of user equipments. The base station forms at least layer of data stream including...
8948287 Method and apparatus for transmitting and receiving data in broadcasting system  
Methods and apparatus are provided for transmitting data in a broadcasting system. Input data is encoded by an encoder. A first demultiplexer generates first transmission symbols using the encoded...
8948304 Apparatus and method for transmitting and receiving data in a communication or broadcasting system using linear block code  
Provided is a method for transmitting data in a communication or broadcasting system using a linear block code by generating a codeword by encoding input information data bits, interleaving the...
8942273 Communication method of relay node using non-linear hybrid network coding and device using said method  
Provided is a relay node that performs network coding with respect to signals transmitted from a plurality of sources. The relay node may partition a plurality of constellation points into a...
8942327 Modulation division multiple access  
The present invention employs hierarchical modulation to simultaneously transmit information on different modulation layers using a carrier RF signal. Initially, first data to be transmitted is...
8938018 Method and system for reducing inter carrier interference for OFDM  
According to one embodiment, a method of encoding a plurality of orthogonal frequency division multiplexing (OFDM) signals is disclosed. The method includes: modulating the plurality of OFDM...
8937989 Channel estimation using linear phase estimation  
Systems and methods are provided for channel estimation using linear phase estimation. These systems and methods enable improved channel estimation by estimating a linear channel phase between...
8938031 Phase slip reduction method  
Disclosed herein are methods and techniques for reducing phase slips in optical communications systems and in particular methods and techniques that operate in receivers for a coherent...
8934589 Demodulation in VAMOS receivers  
A desired signal and interfering signal are transmitted in the same timeslot and on the same frequency using an Adaptive Quadrature Phase Shift Keying (AQPSK) modulated carrier. When the...
8934556 System and method for communicating with shaped cyclic time-domain waveforms  
Embodiments of a system and method for generating a shaped cyclic time-domain waveform are generally described herein. In some embodiments, a first transform may be performed on an input symbol...
8934519 RAKE or G-RAKE receiver structure for downlink transmit diversity signals  
Methods and apparatus are disclosed for receiving a diversity transmitted signal using a Rake or G-Rake receiver in a radio system. Signals are diversity transmitted in a first and second symbol...
8929471 Methods and systems to mitigate impulse interference  
Methods and systems to mitigate impulse interference in an OFDM QAM signal. A per-symbol noise measure, or quality measure (QM) is computed for a symbol k as a MSE of distances between carriers in...
8923434 Method and apparatus for modifying a complex-valued signal, and mobile communication device  
A method and an apparatus for modifying a complex-valued signal are described, the complex-valued signal representing a first symbol and a second symbol. A signal trajectory of the complex-valued...
8924823 System and method for cycle slip correction  
A system and method including a parity bit encoder for encoding each n bits of data to be transmitted with a parity check bit to produce blocks of n+1 bits (n information bits plus one parity bit...
8908786 Optimized QAM transmission  
Systems and methods to optimize QAM transmission are provided. In some implementations, a QAM transmitter can operate to optimize QAM transmissions by reducing high peak signals levels via a QAM...
8903017 Array amplitude modulation system and method  
Array amplitude modulation which includes mapping a data symbol to a phase modulation signal and an amplitude modulation signal for transmission from antenna elements; applying the phase...
8897353 Block time domain channel estimation in OFDM system  
An OFDM receiver receives OFDM symbols in the frequency domain and comb filters and then punctures the OFDM symbols to leave symbols with actual pilot information and with null values at the data...
8897655 Adaptive constellations and decision regions for an optical transport system  
An optical transport system in which (i) an optical transmitter is configured to adaptively change an operative constellation to use a constellation that provides optimal performance...
8891637 Spectral shaping to reduce peak-to-average ratio in wireless communication  
Techniques for performing spectral shaping to achieve a desired peak-to-average ratio (PAR) are described. Spectral shaping may be selectively performed for a single-carrier frequency division...
8890634 Multiplexed configurable sigma delta modulators for noise shaping in a 25-percent duty cycle digital transmitter  
A modulator generates a baseband digital signal from an information-bearing digital signal. The baseband signal has time-varying phase and amplitude defined by a sequence of complex data words,...
8885692 Estimation of intentional phase shift in a calibration apparatus  
Embodiments of the present invention provide an apparatus comprising a transceiver having a receiver and a transmitter connected through a segment of a calibration loop back path. The apparatus...
8885781 System and method for detecting burst noise during quadrature amplitude modulation communications  
A system and method for detecting burst noise during quadrature amplitude modulation (QAM) communications are provided. A QAM signal is acquired at a receiver in communication with a network. The...