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

页码：573 / 579

页数：7

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