Huawei Device Co., Ltd.

Huawei Technologies Co., Limited

Spreadtrum Communications (shanghai) Co., Ltd.

Spreadtrum Communications Corporation

Zhiqun Chen

Feng Li

Gengshi Wu

Yi Yang

Nian Peng

Xiuqin Peng

Meng Hua

Jing Yang

Jian Mg Cheng

Datong Chen

Jingdong Lin

Haitao Zhang

Dan Zhao

Yanshan Shi

Chunling Zhang

Kai Zong

Wenkang Guan

Congli Mao

Aimin Zhang

Kang Yi

Nian Chen

In the field of communications technologies, embodiments of the present invention provide a method for detection using a YI algorithm and a YI detector, so as to solve the technical problem of poor detection performance caused by signal environment variation in the prior art. In the embodiment of the present invention, parameters are obtained according to a received signal; a level threshold at each level starting from a level corresponding to a Tailbits value is obtained according to the parameters, and validity of at least one node at the level is determined according to the level threshold, where the level is the same as a level of the level threshold; and a detection identifier is output according to the validity. The embodiment of the present invention is mainly applied to a scenario of detection using thresholds.

Method for detection using a YI algorithm, and YI detector

In the field of communications, a method and a device for determining a decoding mode of in-band signaling are provided, which improve accuracy of in-band signaling decoding. The method includes: calculating a probability of each decoding mode of in-band signaling of a received signal at a predetermined moment by using a posterior probability algorithm; and from the calculated probabilities of the decoding modes, selecting a decoding mode having a maximum probability value as a decoding mode of the in-band signaling of the received signal at the predetermined moment. The method and the device are mainly used in a process for determining a decoding mode of in-band signaling in a speech frame transmission process.

Method and device for determining a decoding mode of in-band signaling

Embodiments of the present invention provide an interference elimination method, an interference elimination device and a communication system, which are used to implement the effective elimination of signal interference of a receiving end. The method includes: according to a received signal, reconstructing a main cell signal, obtaining the reconstructed main cell signal, and subtracting the reconstructed main cell signal from the received signal, so as to obtain a first residual signal; according to the first residual signal, reconstructing an interference cell signal, and obtaining the reconstructed interference cell signal; and according to the received signal and the reconstructed interference cell signal, obtaining an interference-eliminated main cell signal. According to the interference elimination method, the interference elimination device and the communication system in the embodiments of the present invention, the interference elimination may be performed on the received signal effectively.

Interference elimination method, interference elimination device, and communication system

Embodiments of the present invention provide a multipath searching method and a multipath searcher, to improve accuracy of delay estimation, thereby improving performance of a receiver. The method includes: performing processing on received signals r(t) and pilot sequences p(t) to obtain upsampling signals y(&#x3c4;); subtracting contribution values of a current multipath waveform to other multipath waveforms by using a raised cosine function with a peak position set to zero and according to a global maximum value of |y(&#x3c4;)|and a total of M sampling points {circumflex over (&#x3c4;)}near the global maximum value, to obtain an upsampling signal y(&#x3c4;) having a minimum residual in M groups of upsampling signals y(&#x3c4;); and obtaining a time delay power spectrum of the upsampling signal y(&#x3c4;) having the minimum residual.

Multipath searching method and multipath searcher

A method, a device and a system for detecting channel quality are provided. The method includes: judging whether a Transmit Power Control (TPC) symbol output by a receiver is an invalid symbol; when the TPC symbol is a valid symbol, judging whether polarities of in-phase/quadrature (I/Q) components of the valid symbol are opposite to each other; counting the number of invalid symbols, the number of valid symbols, and the number of valid symbols with opposite polarities; and estimating a Bit Error Rate (BER) according to the number of the invalid symbols, the number of the valid symbols, and the number of the valid symbols with the opposite polarities, and detecting the channel quality through the BER.

Method, device and system for detecting channel quality

A method for assigning signature sequences for E-HICH channel which may avoid the unbalanced situation brought about by the codeword assignment is provided, wherein the use of User Equipment (UE) signature sequences on Enhanced Dedicated Channel Hybrid Automatic Repeat Request Acknowledgement Indicator Channel (E-HICH) is equalized, so as to drive the average detection performance toward equity for different UEs to detect their respective signature sequences on E-HICH channel, and to reduce the average false detection rate for the respective UE on the feedback information transmitted thereto. The method includes: firstly, assigning a E-HICH logical signature sequence index r for each UE; then, converting the logical signature sequence index r into a physical signature sequence index r' varying with time by using a random permutation function; and after that, assigning a signature sequence corresponding to the physical signature sequence index r&#x2032; to the respective UE.

Method for assigning signature sequences for E-HICH channel

A mobile TV broadcast system based on TD-SCDMA network is disclosed herein.

Mobile TV broadcast systems and methods based on TD-SCDMA network

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Shanghai, China

Zhiqun Chen