A New Semi-Blind Channel Estimation In Mimo Using Second Order Statistics
A new channel estimation approach for orthogonally coded multiple input multiple output (MIMO) system is proposed. The main idea of our technique is, using specific properties of the orthogonal space-time block codes (OSTBCs) in the estimation based on the second order statistic (SOS), to estimate the channel matrix after applying singular value decomposition (SVD). This modified solution brings the simple parameters in comparison with the the conventional estimation from channel matrix directly. In this investigation, we try to reduce effect of the ambiguity which can be seen in most of the traditional blind algorithms. Because we still use the training-based least square (LS) for a part of the channel matrix and hence, our scheme can be described as the semi-blind algorithm which has strongly attracted more and more researchers in the wireless field Our detailed anajysis validates the performance and computational advantages of the proposed method. Sim ulation results confirm our modi:fied scheme and illustrate that the new semi-blind channel estimation is capable of improving the quality of the overall system.
MIMO orthogonal space-time block codes second order statistics semi-blind estimator
Dinh-Thuan Do Dinh-Thanh Vu
Dept.of Communications Engineering Ho Chi Minh City University of Science Ho Chi Minh City.Vietnam Dept.of Communications Engineering Ho Chi Minh City University of Technology Ho Chi Minh City, Vietn
国际会议
2010 2nd International Conference on Signal Processing System(2010年信号处理系统国际会议 ICSPS 2010)
大连
英文
928-931
2010-07-05（万方平台首次上网日期，不代表论文的发表时间）