一种MISO条件下空时分组码盲识别方法

A Method for Blind Recognition of STBC in MISO System

该文提出一种单接收天线条件下,空时分组码(STBC)的盲识别方法。使用接收信号在不同时延下的经验分布函数作为特征函数,通过Komogrov-Smirnov(K-S)方法检验经验分布函数之间的距离,以达到识别的目的。算法不需要信道信息、噪声信息和调制信息,所需接收样本数少。仿真结果表明,该文所提出的算法性能较好,对调制方式、载波频偏不敏感,且适用于非高斯噪声条件。

Blind recognition of space-time block coding （STBC） is an important issue in the non-cooperative scenario. However, few literatures on blind recognition in multiple input single output system are reported. An efficient algorithm for STBC recognition is proposed when a single antenna is employed at the receiver. The algorithm exploits the discrimination fea^tres provided by the empirical cumulative distributions （CDFs） of the received signal. The distance between CDFs employed relies on the two-sample Kolmogrov-Smirnov（K-S） test. The proposed algorithm does not need the estimation of channel, noise statistics and modulation type, but only need fewer samples. The simulation shows that the proposed algorithm performs well, and is robust to modulation and carrier frequency offset, even with non-Gaussian noise.