Adaptive bit allocation for space-time block coded OFDM system

Author

Torabi, Mohammad ; Soleymani, M. Reza

Author_Institution

Dept. of Electr. & Comput. Eng., Concordia Univ., Montreal, Que., Canada

Volume

4

fYear

2003

fDate

6-10 April 2003

Abstract

A new scheme consisting of a combination of adaptive bit allocation, space-time block coded-OFDM and antenna selection is presented. The proposed scheme, exploits the benefits of space-time block codes, OFDM and adaptive bit allocation to provide high quality of transmission for wireless communications over frequency selective multipath channels with enhanced performance in terms of spectral and power efficiency. The system performance of non-adaptive OFDM, adaptive OFDM, non-adaptive STBC-OFDM, and the proposed adaptive STBC-OFDM are evaluated and compared. It is shown that the proposed scheme can greatly improve the performance of non-adaptive STBC-OFDM system.

Keywords

OFDM modulation; block codes; multipath channels; space-time codes; adaptive OFDM; adaptive STBC-OFDM; adaptive bit allocation; antenna selection; frequency selective channels; frequency selective multipath channels; nonadaptive OFDM; nonadaptive STBC-OFDM; space-time block coded OFDM system; space-time codes; wireless communications; Bit error rate; Bit rate; Block codes; Fading; Multipath channels; OFDM modulation; System performance; Transmitters; Transmitting antennas; Wireless communication;

fLanguage

English

Publisher

ieee

Conference_Titel

Acoustics, Speech, and Signal Processing, 2003. Proceedings. (ICASSP '03). 2003 IEEE International Conference on

ISSN

1520-6149

Print_ISBN

0-7803-7663-3

Type

conf

DOI

10.1109/ICASSP.2003.1202666

Filename

1202666