Transmit diversity for multiband OFDM UWB systems

S A Ghorashi, F Said, A H Aghvami

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)


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
Original languageEnglish
Pages (from-to)573 - 579
Number of pages7
JournalIEE Proceedings in Communications
Issue number4
Publication statusPublished - Aug 2006


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