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: 2009
摘要: We propose a statistical covariance-matching based blind channel estimation scheme for zero-padding (ZP) MIMO-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/11536/135617
ISBN: 978-1-4244-3827-3
期刊: ISCAS: 2009 IEEE INTERNATIONAL SYMPOSIUM ON CIRCUITS AND SYSTEMS, VOLS 1-5
起始頁: 832
結束頁: +
Appears in Collections:Conferences Paper