公开(公告)号：US09172500B2

公开(公告)日：2015-10-27

申请号：US14516126

申请日：2014-10-16

Applicant: Huawei Technologies Co., Ltd.

Inventor： Dmitri Riabkov ,  Xi Yan ,  Guangjian Wang

IPC: H04L27/06 ,  H04L1/00 ,  H04L27/38 ,  H04L25/06

CPC classification number: H04L1/0054 ,  H04L25/067 ,  H04L27/38

Abstract: The present invention provides a signal demodulation method and device. The method includes: obtaining a symbol probability parameter, where the symbol probability parameter comprises: an amplitude ry and a phase angle φy of a receive signal, an amplitude rxj and a phase angle φxj of each constellation point xj in a decision constellation point set, and a standard deviation σn of Gaussian noise and a standard deviation πθ of phase noise; calculating, according to the symbol probability parameter, a symbol probability that a transmit signal is each constellation point xj in the decision constellation point set; and performing demodulation according to the symbol probability, and outputting demodulation information. The present invention improves an anti-phase-noise capability.

Abstract translation: 本发明提供一种信号解调方法和装置。 该方法包括：获得符号概率参数，其中符号概率参数包括：接收信号的振幅ry和相位角＆amp; y，决策中每个星座点xj的振幅rxj和相位角＆lt; xj 星座点集，以及高斯噪声和标准偏差的标准偏差＆amp; 的相位噪声; 根据符号概率参数，计算发射信号在决策星座点集合中的每个星座点xj的符号概率; 并根据符号概率进行解调，并输出解调信息。 本发明提高了抗相位噪声能力。