Title :
Impact of imperfect channel estimation in OFDM-based spatial multiplexing systems
Author :
You, Young-Hwan ; Jung, Hyeok-Koo ; Jeon, Won-Gi ; Cho, Hyung-Rae
Author_Institution :
Dept. of Internet Eng., Sejong Univ., South Korea
fDate :
11/21/2002 12:00:00 AM
Abstract :
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.
Keywords :
IEEE standards; OFDM modulation; channel estimation; multiplexing; telecommunication standards; wireless LAN; ETSI HIPERLAN/2; IEEE 802.1 la standards; OFDM-based spatial multiplexing systems; imperfect channel estimation; imperfect windowing; multiple-antenna transmission systems; preamble design; time-domain analysis; transmit antennas;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20021063
