A low complexity multi-carrier BLAST architecture for realizing high data rates over dispersive fading channels

N. Boubaker, Khaled Letaief, R. D. Murch

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

Space division multiplexing (SDM) is a promising technique for significantly increasing the bandwidth efficiency and wireless transmission capacity. Vertical Bell Laboratories Layered Space-Time (V-BLAST) is a scheme which exploits the rich scattered wireless channel by using multiple transmit and receive antennas. In order to make V-BLAST more robust against the detrimental effects of frequency selective and time varying channels, we combine V-BLAST with Orthogonal Frequency Division Multiplexing (OFDM) transmission and Reed-Solomon coding. Owing to the required intensive computation involved, we propose a low complexity multicarrier V-BLAST based on the use of a subcarrier grouping, an innovative sub-optimal decoding ordering procedure, and the Gram-Schmitt Orthogonalization (GSO) procedure instead of the pseudo-inverse operation used in V-BLAST. It is shown that the proposed system can greatly reduce the computational complexity required with a minimal penalty in performance compared with the exhaustive multicarrier V-BLAST.

Original languageEnglish
Pages (from-to)800-804
Number of pages5
JournalIEEE Vehicular Technology Conference
Volume2
Issue number53ND
Publication statusPublished - 2001
Externally publishedYes

Fingerprint

Multicarrier
Fading Channels
Fading channels
Low Complexity
Space-time
Vertical
Time-varying Channels
Orthogonalization
Pseudo-inverse
Multiplexing
Orthogonal Frequency Division multiplexing (OFDM)
Grouping
Orthogonal frequency division multiplexing
Decoding
Penalty
Architecture
Antenna
Computational complexity
Division
Computational Complexity

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

Cite this

A low complexity multi-carrier BLAST architecture for realizing high data rates over dispersive fading channels. / Boubaker, N.; Letaief, Khaled; Murch, R. D.

In: IEEE Vehicular Technology Conference, Vol. 2, No. 53ND, 2001, p. 800-804.

Research output: Contribution to journalArticle

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