Blind Channel Estimation for STBC Systems Using Higher-Order Statistics

—This paper describes a new blind channel estimation algorithm for Space-Time Block Coded (STBC) systems. The proposed method exploits the statistical independence of sources before space-time encoding. The channel matrix is estimated by minimizing a kurtosis-based cost function after Zero-Forcing equalization. In contrast to subspace or Second-Order Statistics (SOS) approaches, the proposed method is more general since it can be employed for the general class of linear STBCs including Spatial Multiplexing, Orthogonal, quasi-Orthogonal and NonOrthogonal STBCs. Furthermore, unlike other approaches, the method does not require any modification of the transmitter and, consequently, is well-suited for non-cooperative context. Numerical examples corroborate the performance of the proposed algorithm.

• Type: Journal
• Year: 2011
• Where: TWC
• Authors: Vincent Choqueuse, Ali Mansour, Gilles Burel, Ludovic Collin, Koffi Yao
• Keywords: Channel Estimation Algorithm, Kurtosis-based Cost Function, Space-time Block, TWC 2011