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CMA and soft decision-directed scheme for semi-blind beamforming of QAM systems

CMA and soft decision-directed scheme for semi-blind beamforming of QAM systems
CMA and soft decision-directed scheme for semi-blind beamforming of QAM systems
We propose a semi-blind adaptive beamforming approach for wireless systems that employ high-throughput quadrature amplitude modulation signalling schemes. A minimum number of training symbols, equal to the number of receive antenna-array’s elements, are first utilised to provide a rough initial least squares estimate of the beamformer’s weight vector. A concurrent constant modulus algorithm and soft decisiondirected scheme, originally developed for single-user blind channel equalisation, is then applied to adapt the beamformer. It is demonstrated that this semi-blind adaptive beamforming scheme is capable of converging fast to the minimum mean-square-error beamforming solution.
1-5
Chen, Sheng
9310a111-f79a-48b8-98c7-383ca93cbb80
Yao, Wang
856490b4-cf1c-4dd8-8ab6-3acd64127232
Hanzo, Lajos
66e7266f-3066-4fc0-8391-e000acce71a1
Chen, Sheng
9310a111-f79a-48b8-98c7-383ca93cbb80
Yao, Wang
856490b4-cf1c-4dd8-8ab6-3acd64127232
Hanzo, Lajos
66e7266f-3066-4fc0-8391-e000acce71a1

Chen, Sheng, Yao, Wang and Hanzo, Lajos (2008) CMA and soft decision-directed scheme for semi-blind beamforming of QAM systems. 2008 IEEE 68th Vehicular Technology Conference, , Calgary, Canada. 20 - 23 Sep 2008. pp. 1-5 .

Record type: Conference or Workshop Item (Other)

Abstract

We propose a semi-blind adaptive beamforming approach for wireless systems that employ high-throughput quadrature amplitude modulation signalling schemes. A minimum number of training symbols, equal to the number of receive antenna-array’s elements, are first utilised to provide a rough initial least squares estimate of the beamformer’s weight vector. A concurrent constant modulus algorithm and soft decisiondirected scheme, originally developed for single-user blind channel equalisation, is then applied to adapt the beamformer. It is demonstrated that this semi-blind adaptive beamforming scheme is capable of converging fast to the minimum mean-square-error beamforming solution.

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More information

Published date: 21 September 2008
Additional Information: Event Dates: September 21-24, 2008
Venue - Dates: 2008 IEEE 68th Vehicular Technology Conference, , Calgary, Canada, 2008-09-20 - 2008-09-23
Organisations: Southampton Wireless Group

Identifiers

Local EPrints ID: 266749
URI: http://eprints.soton.ac.uk/id/eprint/266749
PURE UUID: 1f7e22b6-c35c-45d1-bb2a-28100a8f2e83
ORCID for Lajos Hanzo: ORCID iD orcid.org/0000-0002-2636-5214

Catalogue record

Date deposited: 03 Oct 2008 08:37
Last modified: 24 Apr 2021 01:33

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Contributors

Author: Sheng Chen
Author: Wang Yao
Author: Lajos Hanzo ORCID iD

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