Impact of imperfect channel estimation in OFDM-based spatial multiplexing systems
暂无分享，去创建一个
A time-domain analysis of imperfect channel estimation in OFDM-based multiple-antenna transmission systems is studied. The channel estimator encountered with imperfect windowing results in an additional estimation error. By properly designing each preamble for multiple antennas to be orthogonal in the time domain, however, the channel estimation can be applied to the ETSI HIPERLAN/2 and IEEE 802.11a standards in the case of more than two transmit antennas.
[1] Gerard J. Foschini,et al. Layered space-time architecture for wireless communication in a fading environment when using multi-element antennas , 1996, Bell Labs Technical Journal.
[2] J. Li,et al. Preamble design for multiple-antenna OFDM-based WLANs with null subcarriers , 2001, IEEE Signal Processing Letters.
[3] Cedric Nishan Canagarajah,et al. Performance evaluation of BLAST-OFDM enhanced Hiperlan/2 using simulated and measured channel data , 2001 .