Space-time block coding for four transmit antennas over time-selective fading channels: orthogonal or non-orthogonal design?

Author

Zheng, F.-C. ; Burr, A.G.

Author_Institution

Dept. of Electron., York Univ., UK

Volume

1

fYear

2003

fDate

6-9 Oct. 2003

Firstpage

513

Abstract

The paper deals with an issue in space time block coding (STBC) design. It considers whether, over a time-selective channel, orthogonal STBC (O-STBC) or non-orthogonal STBC (NO-STBC) performs better. It is shown that, under time-selectiveness, once vehicle speed has risen above a certain value, NO-STBC always outperforms O-STBC across the whole SNR range. Also, considering that all existing NO-STBC schemes have been investigated under quasi-static channels only, a new simple receiver is derived for the NO-STBC system under time-selective channels.

Keywords

block codes; fading channels; matrix algebra; space-time codes; time-varying channels; transmitting antennas; SNR; channel matrix; code matrix; nonorthogonal STBC; orthogonal STBC; quasi-static channels; space time block coding; time variant channel; time-selective channel; time-selective fading channels; transmit antennas; vehicle speed; Block codes; Councils; Decoding; Degradation; Fading; Quadrature phase shift keying; Receiving antennas; Robustness; Transmitting antennas; Vehicles;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference, 2003. VTC 2003-Fall. 2003 IEEE 58th

ISSN

1090-3038

Print_ISBN

0-7803-7954-3

Type

conf

DOI

10.1109/VETECF.2003.1285070

Filename

1285070