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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
Publication Date: 2003/11/01
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.