科研之友
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摘要
Transmit diversity is recently proposed to reduce the effects in fading channels in various wireless applications. In this paper, we apply a transmit diversity technique to downlink multicarrier CDMA (Code devision multiple access) systems, which utilize the cyclic shift versions of the normal spread codes as the spread sequences in transmit diversity branches. A RAKE-like parallel receiver is employed in frequency domain to obtain diversity gains. Simulation results show that performance benefits can be achieved compared to conventional MC-CDMA systems in 2-ray multipath fading channels.
- 出版日期2003-7
- 单位上海交通大学
