TY - GEN
T1 - QAM codebooks for low-complexity limited feedback MIMO beamforming
AU - Ryan, Daniel J.
AU - Clarkson, I. Vaughan L.
AU - Collings, Iain B.
AU - Guo, Dongning
AU - Honig, Michael L.
PY - 2007
Y1 - 2007
N2 - 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 an equivalence between the problems of beamforming codebook search and 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.
AB - 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 an equivalence between the problems of beamforming codebook search and 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.
UR - http://www.scopus.com/inward/record.url?scp=38549170156&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=38549170156&partnerID=8YFLogxK
U2 - 10.1109/ICC.2007.686
DO - 10.1109/ICC.2007.686
M3 - Conference contribution
AN - SCOPUS:38549170156
SN - 1424403537
SN - 9781424403530
T3 - IEEE International Conference on Communications
SP - 4162
EP - 4167
BT - 2007 IEEE International Conference on Communications, ICC'07
T2 - 2007 IEEE International Conference on Communications, ICC'07
Y2 - 24 June 2007 through 28 June 2007
ER -