A new optimal transmit and receive diversity scheme

TitleA new optimal transmit and receive diversity scheme
Publication TypeConference Paper
Year of Publication2001
AuthorsFeng, X., and C. Leung
Conference NameCommunications, Computers and signal Processing, 2001. PACRim. 2001 IEEE Pacific Rim Conference on
Pagination538 -541 vol.2
Keywordsantenna diversity, diversity reception, fading channels, fading effects, maximum ratio transmission, mobile radio, mobile radio channels, MRT receiver combining weights, MRTC, multipath channels, optimal transmit/receive diversity scheme, signal-to-noise ratio, SNR, space diversity

The effects of fading in mobile radio channels can be mitigated with the use of space (or antenna) diversity. One diversity scheme which is applicable to any number of transmit and receive antennas is maximum ratio transmission (MRT). In this paper, it is shown that a certain constraint on the MRT receiver combining weights results in performance degradation. A new transmit and receive diversity scheme, MRTC, is proposed which maximizes the output signal-to-noise ratio (SNR). The MRTC scheme optimizes the transmit and receive weights. It is found that MRTC can offer significant gains over MRT. Another slightly sub-optimal but simpler-to-implement diversity scheme, IMRT, is also proposed. The IMRT scheme uses the same transmit weights as MRT; however, in contrast to MRT, it uses optimal MRC-based receive weights


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