NDLI: A space-frequency-time diversity scheme for MIMO-OFDM systems

Content Provider	IEEE Xplore Digital Library
Author	Savary, S. Huynh, H.T. Chouinard, J.-Y. Roy, S.
Copyright Year	2005
Description	Author affiliation: Lab. de Radiocommun. et de Traitement du Signal, Laval Univ., Que. (Savary, S.; Huynh, H.T.; Chouinard, J.-Y.; Roy, S.)
Abstract	In this paper, a new coding scheme, for MIMO-OFDM systems that tends to exploit both space, time, and frequency diversity is introduced. The code, partially based on the well-known Alamouti scheme, works with a configuration of two transmit and $n_{r}$ receive antennas and requires a channel with coherent impulse response during two OFDM signaling intervals. Monte Carlo simulations have been run to compare the new scheme with other designs. Simulations have shown that this scheme performs better than direct MIMO-OFDM transposition of space-time codes (e.g. transpositions of Alamouti scheme). Despite the reduced code rate 1/2 of this scheme, its performances show a superior diversity order characterized by a steeper slope of the bit error rate curves. Simulations were also run to gauge the effects of errors on channel parameters estimation. These errors were simulated through, a model derived from a MIMO-OFDM channel estimation technique
Starting Page	1375
Ending Page	1379
File Size	265919
Page Count	5
File Format	PDF
ISBN	0780388852
ISSN	08407789
DOI	10.1109/CCECE.2005.1557234
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2005-05-01
Publisher Place	Canada
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	OFDM MIMO Frequency diversity Receiving antennas Space time codes Channel estimation Frequency domain analysis Maximum likelihood decoding RF signals Light rail systems
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering Hardware and Architecture

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