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8391399 Single carrier waveform system with frequency domain equalization  
A communications system includes one or more antennas and a receiver coupled to the one or more antennas. The one or more antennas are operable to receive a signal transmitted from a transmitter....
8391395 Precoder codebooks for effective channels with structured frequency-selectivity  
A precoder for an effective channel linking a wireless receiver to a wireless transmitter includes a precoder report and a precoder update report, the effective channel including a propagation...
8391130 Method and apparatus for estimating and reducing interference in wireless communication systems  
Methods and apparatuses for estimating and reducing interference in wireless communication systems are disclosed. As one example, a method for reducing interference in a wireless communication...
8391421 EDA-based detection of communication signals  
Methods and apparatus for recovering data from communication signals apply estimated distribution algorithms. Estimated probability distributions may be constructed to avoid deterministic values....
8391423 Estimating method for maximum channel delay and cyclic prefix (CP) averaging method in OFDM receiver  
An estimating method for maximum channel delay and cyclic prefix (CP) averaging method in orthogonal frequency division multiplexing (OFDM) receiver are described. Specifically, the estimating...
8385454 Robust linear precoder designs for multi-cell downlink transmission  
Methods and systems for optimizing the utilities of receiver devices in a wireless communication network are disclosed. Precoder design formulations that maximize a minimum worst-case rate or a...
8385851 Radio communication method, radio transmission apparatus and receiving apparatus  
A radio communication method includes generating a first transmit RF signal and a second transmit RF signal from a data signal to be transmitted. Each of the first and second transmit RF signals...
8385477 Decision boundary estimation for MIMO wireless receivers  
In a wireless receiver, an estimated decision boundary for use in detecting symbol values from one group of combined received symbols is calculated based on a estimated traffic-to-pilot channel...
8385487 Receive diversity systems  
A diversity receiver and a method of recovering symbols in a diversity receiver system comprises receiving first and second signals at first and second antenna elements. The first signal comprises...
8385868 Diversity antenna system and method utilizing a threshold value  
An antenna system for receiving an RF signal from a first antenna and a second antenna includes a phase shift circuit. The phase shift circuit shifts a phase of the RF signal from the second...
8385486 Diversity receiving apparatus and diversity receiving method  
There is provided a diversity receiving apparatus, comprising: a first branch (5) for decoding a frequency multiplexing signal in which a carrier group has been multiplexed, thereby outputting a...
8385488 Inter-cell interference mitigation method using spatial covariance matrix estimation method for inter-cell interference mitigation of MIMO antenna OFDM system  
Disclosed is an inter-cell interference mitigation method using a spatial covariance matrix (SCM) estimation method in a multi-input multi-output (MIMO) orthogonal frequency division multiplexing...
8385484 Method and apparatus for detection and cancellation of single-tone or multi-tone interference in communication systems  
A method and system for canceling an interference signal are provided. In the method, a received signal is transformed from a time domain to a frequency domain at relative low precision to obtain...
8385446 Receiving apparatus and method for maximum likelihood in a single carrier system  
A receiving apparatus and method of a Maximum Likelihood (ML) scheme in a Single-Carrier (SC) system are provided. The apparatus includes at least two antennas, at least two Orthogonal Frequency...
8379618 Precoded data receiver  
Methods and apparatus are disclosed for applying successive multi-rank beamforming strategies (e.g., successive precoding strategies) for the design of precoders over a set of parallel channels....
8379695 Apparatus and method for receiving signal using rake receiver and equalizer in wireless communication system  
An apparatus and a method for selecting a receiver for demodulating a reception signal at a reception end having a plurality of receivers are provided. The method includes determining, a mean and a...
8379752 Methods and apparatus for multiple-antenna communication of wireless signals with embedded synchronization/pilot sequences  
Embodiments include methods for determining synchronization/pilot sequences (SPS) to be utilized in conjunction with transmissions by antennas of a multiple-antenna transmitter. The SPS include...
8379778 Bursty interference suppression for communications receivers  
Techniques are provided for suppressing interference by taking into account the possible bursty nature of co-channel interference in a communication system. In an aspect, interference levels are...
8379768 Method and arrangement for generating soft bit information in a receiver of a multiple antenna system  
The invention which relates to a method and to an arrangement for generating soft bit information in a receiver of a multiple antenna system is based on the object of reducing the calculation...
8379781 Apparatus and method for adaptive receive signal decoding based on channel variation in communication system  
An apparatus for adaptively decoding based on a channel variation at a receiver of a communication system supporting an Alamouti mode is provided. The apparatus includes a channel variation...
8379749 Transmitter and transmission method  
A transmitter includes multiple transmit antennas, a conversion unit configured to generate multiple signal sequences corresponding to a predefined frequency bandwidth from one or more transmission...
8379777 Multicode transmission using walsh hadamard transform  
A symbol sequence contained in a received signal comprising a cyclic convolution of a Walsh code multiplexed signal and a channel impulse response of a multipath channel is detected using Walsh...
8379743 Method and apparatus for interference mitigation in a baseband OFDM receiver  
A method of compensating interference of received symbols in a MIMO OFDM receiver employs MMSE equalization and LLR scaling, and a MIMO OFDM receiver includes a linear MMSE equalizer. The method...
8379739 Method and system for impact mitigation of sudden carrier frequency shifts in OFDM receivers  
This disclosure relates to a method and system for impact mitigation of sudden carrier frequency shifts in OFDM receivers that transforming a received complex digital baseband signal and decoding...
8379746 Transmission of orthogonal space time codes  
Implementations of improved transmission of orthogonal space time codes are disclosed.
8379747 Spatial sub-channel selection and pre-coding apparatus  
A spatial sub-channel selection and pre-coding apparatus for being operative in a first communication device, the first communication device being adapted for communicating with a second and a...
8379748 Apparatus and method for reception in multi-input multi-output system  
Provided are an apparatus and method for reception in a MIMO system. An apparatus for calculating a signal weight, includes: at least two multiplexers configured to receive, a data stream...
8379772 Receiver, communication system, and channel estimation method  
A receiver includes a channel estimation unit that calculates channel estimation values of symbols containing pilot signals from signals transmitted by a plurality of antennas to obtain channel...
8374213 Apparatus and method for transmission of sounding reference signal in uplink wireless communication systems with multiple antennas and sounding reference signal hopping  
A sounding reference signal transmission method which is efficient in an uplink wireless telecommunications system using a multiple antenna technique and sounding reference signal hopping. A...
8374260 Method and apparatus for implementing uplink transmit diversity in a switched antenna orthogonal frequency division multiplexing communication system  
A method and a customer's wireless communication device are provided that perform uplink transmit diversity in a switched antenna OFDM communication system. A switching of antennas used by the...
8374261 Method and apparatus for Doppler estimation in orthogonal frequency-division multiplexing (OFDM)  
A method and apparatus for estimating Doppler channel in an Orthogonal Frequency-Division Multiplexor. The method includes selecting a continuation pilot, generating a channel estimation, filtering...
8374268 Method and apparatus for providing channel quality feedback in an orthogonal frequency division multiplexing communication system  
In an Orthogonal Frequency Division Multiplexing communication system, a user equipment reports channel quality information that is sufficient to construct a fading profile of a frequency bandwidth...
8374277 Wireless communication mobile station device and method for using precoding matrix  
Provided is a wireless communication mobile station device capable of suppressing an increase in an SRS resource even when the mobile station is provided with a plurality of antennas. In the...
8374552 Concurrent testing of multiple communication devices  
Testing a plurality of communication devices. A plurality of signals may be received from the plurality of communication devices. The plurality of signals may include a signal from each of the...
8374293 Signal power estimation for cellular OFDM systems  
Signal power of a received signal, which has a plurality of preamble sequences associated with sub-carrier signals received from a plurality of sub-carriers, in a cellular Orthogonal Frequency...
8374301 Wireless relay apparatus and wireless relay method  
A wireless relay apparatus relaying wireless communication between a transmission station and a receiving station includes M (M is an integer >1) receiving antennas receiving a radio signal from...
8369469 Robust synchronization and detection mechanisms for OFDM WLAN systems  
A method including: receiving, through a wireless channel, a plurality of modulated signals at a plurality of antennas, wherein each antenna receives a corresponding modulated signal; generating a...
8369440 Communication apparatus, communication method, and mobile station apparatus  
A communication apparatus includes a plurality of transmitting units that transmit a signal stream from each different antenna; a scheduling unit being configured such that the number of outputs is...
8369395 Portable apparatus and method of measuring wireless channel and multiple antenna correlation  
A portable apparatus including: a Radio Frequency (RF) unit to control a frequency of a signal to be measured, to broadcast the signal to be measured through multiple transmission antennas, to...
8369468 Tensor-based receiver for separating component signals in a composite signal  
A receiver separates multiple component signals carried in a composite signal that have been spread over time and frequency. Multiple diversity branches receive the composite signal. A tensor...
8363745 Wireless communications method and system with spatial multiplexing using dually polarized antennas and corresponding receiver  
A method is provided for transmitting radio signals. Two channels are defined by two transmit antennas, having two orthogonal directions, together with two receive antennas, having two orthogonal...
8363746 Method to modify the frequency hopping scheme by extending the validity of the reference signals  
The present invention increases the interference diversity in systems with the frame structure described above by using frequency hopping sequences that are selected considering characteristics of...
8363695 Wireless communication apparatus and a reception method involving frequency hopping  
Disclosed is a receiver of a direct conversion receiving scheme in which a packet is transmitted or received while performing frequency hopping for each symbol and demodulation is started by...
8363738 Hierarchical coding for multicast messages  
Techniques for sending signaling information using hierarchical coding are described. With hierarchical coding, individual messages for users are encoded using multiple interconnected encoders such...
8363755 Signal receiving apparatus, method, program and system  
A signal receiving apparatus includes: an acquisition section configured to acquire an Orthogonal Frequency Division Multiplexing signal resulting from combination of a plurality of signals...
8358724 Radio communication apparatus and control method  
A radio base station according to the present invention is equipped with a determination unit that compares a first signal quality of a first output signal which is output by an adaptive array...
8358716 Method and apparatus for synchronizing a wireless communication system  
Techniques for synchronizing a receiver and transmitter in a wireless communication system address synchronization within the context of a detection formulation and provide synchronization...
8358714 Coding and modulation for multiple data streams in a communication system  
Techniques for transmitting multiple data streams to a single receiver using a single code rate and different modulation schemes are described. Channel estimates are determined for the multiple...
8358715 System and method for quasi-orthogonal space-time block coding  
The present invention relates to a quasi-orthogonal space-time block coding system and method. The system does not become particularly complicated since the encoding rate is given as 1 and it is...
8355921 Method, apparatus and computer program product for providing improved audio processing  
An apparatus for performing improved audio processing may include a processor. The processor may be configured to divide respective signals of each channel of a multi-channel audio input signal...