Transmit diversity for multiband OFDM UWB systems

被引：7
|
作者：
Ghorashi, S. A. [1 ]
Said, F. [1 ]
Aghvami, A. H. [1 ]
机构：
[1] Kings Coll London, Ctr Telecommun Res, London WC2B 5RL, England
来源：
IEE PROCEEDINGS-COMMUNICATIONS | 2006年 / 153卷 / 04期
关键词：
D O I：
10.1049/ip-com:20050043
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：
Multiband orthogonal frequency division multiplexing (MB-OFDM) has been proposed as an effective solution for providing high speed data transmission over the ultra-wideband spectrum in short range wireless links. The employment of transmit diversity techniques based on block codes can achieve enhancement in such a wireless system's performance since it greatly reduces the detrimental effects of multipath fading. In a MB-OFDM UWB system the space coded symbols can be distributed as space-time block codes over successive OFDM symbols or as spacefrequency block codes over neighbouring subcarriers. The authors investigate the performance of a MB-OFDM UWB system when it operates in conjunction with transmit diversity. More specifically, they analyse the suitability and performance of both space-time and space-frequency block coded MB-OFDM UWB system under various UWB channel models. The study shows that for the channel models considered, space-time block coding provides the best performance.
引用
收藏
页码：573 / 579
页数：7
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