Title :
Improved transmit diversity using space-time block coding for OFDM systems
Author :
Ko, Eunseok ; Joo, Panyuh ; Kang, Changeon ; Hong, Daesik
Author_Institution :
Dept. of Electr. & Electron. Eng., Yonsei Univ., Seoul, South Korea
Abstract :
We propose an improved transmit diversity using space-time block coding for OFDM systems in frequency selective fading channels. With only two transmit antennas, the proposed scheme can achieve a fourth-order diversity in. gain at low complexity. Simulation results for the proposed scheme show that this joint exploitation of spatial diversity and frequency diversity remarkably improves the BER performance.
Keywords :
OFDM modulation; Rayleigh channels; block codes; diversity reception; error statistics; maximum likelihood decoding; space-time codes; BER performance; OFDM systems; Rayleigh fading channels; fourth-order diversity gain; frequency diversity; frequency selective fading channels; maximum likelihood decoding; multipath fading; simulation results; space-time block coding; space-time codes; spatial diversity; transmit antennas; transmit diversity; Bit error rate; Block codes; Diversity methods; Fading; Frequency diversity; Maximum likelihood decoding; OFDM; Receiving antennas; Transmitting antennas; Wideband;
Conference_Titel :
MILCOM 2002. Proceedings
Print_ISBN :
0-7803-7625-0
DOI :
10.1109/MILCOM.2002.1179618
