Unitary Space-Time Modulation for Multiple-Antenna Communications in Rayleigh Flat Fading

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Unitary Space-Time Modulation for Multiple-Antenna Communications in Rayleigh Flat Fading (1998)

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by Bertrand Hochwald , Thomas Marzetta

Venue:	IEEE Trans. Inform. Theory
Citations:	303 - 18 self

BibTeX

@ARTICLE{Hochwald98unitaryspace-time,
    author = {Bertrand Hochwald and Thomas Marzetta},
    title = {Unitary Space-Time Modulation for Multiple-Antenna Communications in Rayleigh Flat Fading},
    journal = {IEEE Trans. Inform. Theory},
    year = {1998},
    volume = {46},
    pages = {543--564}
}

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Abstract

Motivated by information-theoretic considerations, we propose a signalling scheme, unitary space-time modulation, for multiple-antenna communication links. This modulation is ideally suited for Rayleigh fast-fading environments, since it does not require the receiver to know or learn the propagation coefficients. Unitary space-time modulation uses constellations of T \cross M space-time signals {\Phi_l, l= 1,...L},where T represents the coherence interval during which the fading is approximately constant, and M > M . We design some multiple-antenna signal constellations and simulate their effectiveness as measured by bit error probability with maximum likelihood decoding. We demonstrate that two antennas have a 6-dB diversity gain over one antenna at 15-db SNR.

Keyphrases

unitary space-time modulation multiple-antenna communication rayleigh flat fading multiple-antenna communication link 15-db snr 6-db diversity gain cross space-time signal rayleigh fast-fading environment bit error probability information-theoretic consideration propagation coefficient multiple-antenna signal constellation coherence interval signalling scheme maximum likelihood

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