Time-Domain Approach of Semi-Blind Channel Estimation for OFDM-Based Layered Space-Time Systems

Yoon-Jae SO  Young-Hwan YOU  Hyoung-Kyu SONG  

IEICE TRANSACTIONS on Communications   Vol.E86-B   No.11   pp.3317-3321
Publication Date: 2003/11/01
Online ISSN: 
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Wireless Communication Technology
channel estimation,  preamble,  BLAST,  OFDM,  

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Combining a layered space-time receiver with the OFDM for high-rate transmissions requires the multi-channel estimation process. So, this letter proposes a time-domain approach for new preamble structure in OFDM-based multiple antenna systems, and investigates the channel estimation performance based on the semi-blind processing and its imperfectness by using time-domain windowing. The proposed preamble can estimate the multi-channel up to the 8 transmit antennas in the WLAN standards using two long preambles.