Rate-diversity tradeoff of space-time codes with fixed alphabet and optimal constructions for PSK modulation

Author

Lu, Hsiao-feng ; Kumar, P. Vijay

Author_Institution

Dept. of Electr. Eng.-Syst., Univ. of Southern California, Los Angeles, CA, USA

Volume

49

Issue

10

fYear

2003

Firstpage

2747

Lastpage

2751

Abstract

We show that for any (Q×M) space-time code S having a fixed, finite signal constellation, there is a tradeoff between the transmission rate R and the transmit diversity gain ν achieved by the code. The tradeoff is characterized by R≤Q-ν+1, where Q is the number of transmit antennas. When either binary phase-shift keying (BPSK) or quaternary phase-shift keying (QPSK) is used as the signal constellation, a systematic construction is presented to achieve the maximum possible rate for every possible value of transmit diversity gain.

Keywords

Rayleigh channels; diversity reception; optimisation; quadrature phase shift keying; space-time codes; transmitting antennas; BPSK; PSK modulation; QPSK; binary phase-shift keying; finite signal constellation; fixed alphabet; optimal construction; quasi-static Rayleigh fading; quaternary phase-shift keying; rate-diversity tradeoff; space-time codes; transmission rate; transmit antennas; transmit diversity gain; Binary phase shift keying; Constellation diagram; Diversity methods; Modular construction; Modulation coding; Phase shift keying; Quadrature phase shift keying; Receiving antennas; Space time codes; Transmitting antennas;

fLanguage

English

Journal_Title

Information Theory, IEEE Transactions on

Publisher

ieee

ISSN

0018-9448

Type

jour

DOI

10.1109/TIT.2003.817469

Filename

1237153