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A zero-forcing multiuser transmitter preprocessing scheme for downlink communications

A zero-forcing multiuser transmitter preprocessing scheme for downlink communications
A zero-forcing multiuser transmitter preprocessing scheme for downlink communications
In this letter a multiuser transmitter preprocessing (MUTP) approach is proposed for downlink wireless communications, such as in spatial-division multiple-access (SDMA) or direct-sequence code-division multiple-access (DS-CDMA) system. In the proposed MUTP the preprocessing matrix is obtained by constructing a subspace that is orthogonal to the interference subspace without relying on eigen-analysis. The proposed MUTP fully removes the downlink multiuser interference, resulting in the zero-forcing (ZF) solution. It is capable of achieving the same bit error rate (BER) performance as the conventional ZF-based MUTP (ZF-MUTP).
Pre-filtering, preprocessing, zero-forcing, multiple-input multiple-output, space-division multiple-access, direct-sequence code-division multiple-access, orthogonal subspace.
862-865
Yang, Lie-Liang
ae425648-d9a3-4b7d-8abd-b3cfea375bc7
Yang, Lie-Liang
ae425648-d9a3-4b7d-8abd-b3cfea375bc7

Yang, Lie-Liang (2008) A zero-forcing multiuser transmitter preprocessing scheme for downlink communications. IEEE Transactions on Communications, 56 (6), 862-865. (doi:10.1109/TCOMM.2008.060354). (In Press)

Record type: Article

Abstract

In this letter a multiuser transmitter preprocessing (MUTP) approach is proposed for downlink wireless communications, such as in spatial-division multiple-access (SDMA) or direct-sequence code-division multiple-access (DS-CDMA) system. In the proposed MUTP the preprocessing matrix is obtained by constructing a subspace that is orthogonal to the interference subspace without relying on eigen-analysis. The proposed MUTP fully removes the downlink multiuser interference, resulting in the zero-forcing (ZF) solution. It is capable of achieving the same bit error rate (BER) performance as the conventional ZF-based MUTP (ZF-MUTP).

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More information

Accepted/In Press date: June 2008
Keywords: Pre-filtering, preprocessing, zero-forcing, multiple-input multiple-output, space-division multiple-access, direct-sequence code-division multiple-access, orthogonal subspace.
Organisations: Southampton Wireless Group

Identifiers

Local EPrints ID: 264859
URI: http://eprints.soton.ac.uk/id/eprint/264859
PURE UUID: d8e372ad-0482-4836-8d66-9d930a2db014
ORCID for Lie-Liang Yang: ORCID iD orcid.org/0000-0002-2032-9327

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Date deposited: 16 Nov 2007 15:55
Last modified: 03 Dec 2019 01:56

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Author: Lie-Liang Yang ORCID iD

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