Improved Channel Estimator for MIMO-SCBT Systems Using Quadriphase Complementary Sequences

Haiming WANG  Xiqi GAO  Bin JIANG  Xiaohu YOU  Wei HONG  

IEICE TRANSACTIONS on Communications   Vol.E94-B   No.1   pp.342-345
Publication Date: 2011/01/01
Online ISSN: 1745-1345
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Wireless Communication Technologies
channel estimator,  multiple-input and multiple-output (MIMO),  single-carrier block transmission (SCBT),  quadriphase complementary sequences (QCSs),  

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In this letter, an improved channel estimator for MIMO-SCBT systems is proposed. Pilot blocks are constructed using quadriphase complementary sequences (QCSs) which enable both one-sided (OSD) and two-sided (TSD) channel estimation (CE). And OSD-CE and TSD-CE are combined to provide improved performance in frequency-selective fast and slow fading channels and to maintain low-complexity implementations. Simulation results demonstrate the performance merits of the proposed scheme.