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ICC
2007
IEEE

QAM Codebooks for Low-Complexity Limited Feedback MIMO Beamforming

11 years 11 months ago
QAM Codebooks for Low-Complexity Limited Feedback MIMO Beamforming
— This paper proposes a new QAM based codebook for beamforming in multiple-input multiple-output (MIMO) wireless systems with a limited-rate feedback channel. We show that such codebooks perform arbitrarily close to the perfect feedback case as the constellation size increases, and that full diversity order is achieved. We demonstrate a duality of the beamforming codebook search problem with that of noncoherent sequence detection. Based on this we propose a fast beamforming vector search algorithm. Monte-Carlo simulations are presented to show that the performance is comparable to the best known codebooks, and that the search complexity can be reduced by several orders of magnitude.
Daniel J. Ryan, I. Vaughan, L. Clarkson, Iain B. C
Added 02 Jun 2010
Updated 02 Jun 2010
Type Conference
Year 2007
Where ICC
Authors Daniel J. Ryan, I. Vaughan, L. Clarkson, Iain B. Collings, Dongning Guo, Michael L. Honig
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