NDLI: A space-time receiver for MIMO-OFDM ad hoc networks

Content Provider	IEEE Xplore Digital Library
Author	Taiwen Tang Heath, R.W.
Copyright Year	2005
Description	Author affiliation: Dept. of Electr. & Comput. Eng., Texas Univ., Austin, TX (Taiwen Tang; Heath, R.W.)
Abstract	In this paper, we propose a receiver architecture that can demodulate multiple data streams with different frequency offsets and propagation delays in multiple input multiple output orthogonal frequency division multiplexing (MIMO-OFDM) ad hoc networks. The receiver performs joint synchronization and interference cancellation to separate these interfering data streams and achieve synchronization for each stream. We propose a novel training-based minimizing mean square error (MMSE) algorithm to jointly obtain the frequency offsets and the equalization delays. The effects of frequency offsets and propagation delays are compensated with these estimated parameters. We also propose a direct training-based equalizer design algorithm to obtain the equalizer coefficients. This algorithm involves solving an optimization problem that considers symbol error rate. Simulation shows good uncoded bit error rate performance for our proposed algorithms
Starting Page	1409
Ending Page	1413
File Size	3878115
Page Count	5
File Format	PDF
ISBN	0780393937
DOI	10.1109/MILCOM.2005.1605874
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2005-10-17
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Ad hoc networks Propagation delay Frequency synchronization Frequency estimation Equalizers MIMO OFDM Interference cancellation Mean square error methods Delay estimation
Content Type	Text
Resource Type	Article

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