NDLI: Multiple beamforming with constellation precoding: Diversity analysis and Sphere Decoding

Content Provider	IEEE Xplore Digital Library
Author	Hong Ju Park Boyu Li Ayanoglu, E.
Copyright Year	2010
Description	Author affiliation: Center for Pervasive Communications and Computing, Department of Electrical Engineering and Computer Science, University of California, Irvine (Hong Ju Park; Boyu Li; Ayanoglu, E.)
Abstract	Multi-Input Multi-Output (MIMO) wireless communication systems commonly employ beamforming techniques with Singular Value Decomposition (SVD). In such systems, if no channel encoding is employed, the full diversity order provided by the channel is achieved when a single symbol is transmitted over multiple channels; however, this property is lost whenever multiple symbols are simultaneously transmitted. The full diversity order can be restored when channel coding is added to such a system. For example, when Bit-Interleaved Coded Modulation (BICM) is combined with this technique, the full diversity order of NM in an M ×N MIMO channel, transmitting S parallel streams is possible; provided SRc ≤ 1 where RC is the BICM convolutional code rate. In this paper, we present multiple beamforming with constellation precoding which can achieve the full diversity order with both uncoded and BICM-coded SVD systems. An analytical proof of this property is provided. In addition, to reduce the computational complexity of Maximum Likelihood (ML) decoding, we introduce a Sphere Decoding (SD) technique. This technique achieves several orders of magnitude reduction in computational complexity not only with respect to conventional ML decoding, but also, with respect to conventional SD.
Starting Page	1
Ending Page	11
File Size	572495
Page Count	11
File Format	PDF
ISBN	9781424470129
e-ISBN	9781424470143
DOI	10.1109/ITA.2010.5454147
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-01-31
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	SVD Array signal processing Computational complexity Channel coding constellation precoding Maximum likelihood decoding Wireless communication Strontium sphere decoding MIMO systems BICMB Interleaved codes MIMO Modulation coding Singular value decomposition
Content Type	Text
Resource Type	Article

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