Joint Symbol Detection of Multi-antenna Signals Based on EM
This paper presents a joint symbol detection algorithm based on expectation maximization (EM) for symbol detection of multi-antenna PSK and QAM signals with different phase offset. Adopting EM iterative, the algorithm realizes the maximum-likelihood (ML) estimation of PSK and QAM symbol detection over multi-antenna signals. A modified realization is proposed for practical signal stream processing and the convergence is proved too. Analysis and simulation results show that the algorithm depresses noise interference, improves signal quality and degrades symbol error ratio (SER) effectively by joint symbol detection of multi-antenna signals. Comparing with single channel, the phase estimation error degrades substantially and reaches modified Cramer-Rao bound (MCRB).
joint symbol detection multi-antenna expectation maximization maximum-likelihood stream processing
Ning Zhuang Hong-yi Yu Ge Wang
Institute of Information Science and Technology Zhengzhou, China
国际会议
西安
英文
660-664
2011-05-27（万方平台首次上网日期，不代表论文的发表时间）