標題: Statistical covariance-matching based blind channel estimation for zero-padding MIMO-OFDM systems
作者: Chen, Yi-Sheng
Wu, Jwo-Yuh
交大名義發表
National Chiao Tung University
關鍵字: Blind channel estimation;Zero padding;MIMO-OFDM
公開日期: 2012
摘要: We propose a statistical covariance-matching based blind channel estimation scheme for zero-padding (ZP) multiple-input multiple-output (MIMO)-orthogonal frequency division multiplexing (OFDM) systems. By exploiting the block Toeplitz channel matrix structure, it is shown that the linear equations relating the entries of the received covariance matrix and the outer product of the MIMO channel matrix taps can be rearranged into a set of decoupled groups. The decoupled nature reduces computations, and more importantly guarantees unique recovery of the channel matrix outer product under a quite mild condition. Then the channel impulse response matrix is identified, up to a Hermitian matrix ambiguity, through an eigen-decomposition of the outer product matrix. Simulation results are used to evidence the advantages of the proposed method over a recently reported subspace algorithm applicable to the ZP-based MIMO-OFDM scheme.
URI: http://hdl.handle.net/11536/16973
http://dx.doi.org/10.1186/1687-6180-2012-139
ISSN: 1687-6180
DOI: 10.1186/1687-6180-2012-139
期刊: EURASIP JOURNAL ON ADVANCES IN SIGNAL PROCESSING
起始頁: 1
結束頁: 9
顯示於類別:期刊論文


文件中的檔案:

  1. 000308652900001.pdf