Performance Analysis of Adaptive Bit Loading for SFBC-OFDM over WSSUS Multipath Channels

被引:0
|
作者
Wang Wei-gong [1 ]
Da Xin-yu [1 ]
机构
[1] Air Force Engn Univ, Telecommun Engn Inst, Xian, Peoples R China
关键词
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暂无
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
This paper studies an adaptive modulation technique combined with space-frequency block coded OFDM (SFBC-OFDM) over wide sense stationary uncorrelated scattering (WSSUS) multipath channels. Chow's adaptive bit loading algorithm and Alamouti's diversity scheme are employed in the two transmitter antennas and two receiver antennas SFBC-OFDM. WSSUS multipath channels are discussed. Then scattering function is presented. Simulation results show that adaptive SFBC-OFDM has 1.5 dB advantage compared with fixed modulation SFBC-OFDM. Furthermore, adaptive SFBC-OFDM requires less additional power gain than fixed modulation SFBC-OFDM, which can combat feedback in WSSUS multipath channel.
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收藏
页码:1508 / 1511
页数:4
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