TY - GEN
T1 - Linear dispersion codes for MIMO channels with limited feedback
AU - Machado, Renato
AU - Uchôa-Filho, Bartolomeu F.
AU - Duman, Tolga M.
PY - 2008
Y1 - 2008
N2 - In this paper, we propose linear dispersion codes (LDCs) for multiple-input multiple-output (MIMO) channels with a prescribed amount of feedback. The proposed scheme selects the LDC from a set of LDCs that minimizes the error probability based on the instantaneous channel conditions. The determination of the best set of LDCs, i.e., the one that minimizes the average error probability, is described as a constrained optimization problem. While this problem appears to be intractable in general, for certain parameters we present good sets of LDCs, obtained from an iterative optimization algorithm. Results are given for rate-one LDCs only, but this restriction can be removed. Computer simulations show that the proposed schemes outperform previously reported comparable schemes for the same number of feedback bits.
AB - In this paper, we propose linear dispersion codes (LDCs) for multiple-input multiple-output (MIMO) channels with a prescribed amount of feedback. The proposed scheme selects the LDC from a set of LDCs that minimizes the error probability based on the instantaneous channel conditions. The determination of the best set of LDCs, i.e., the one that minimizes the average error probability, is described as a constrained optimization problem. While this problem appears to be intractable in general, for certain parameters we present good sets of LDCs, obtained from an iterative optimization algorithm. Results are given for rate-one LDCs only, but this restriction can be removed. Computer simulations show that the proposed schemes outperform previously reported comparable schemes for the same number of feedback bits.
KW - Antenna selection
KW - Beamforming techniques
KW - Code selection
KW - Limited feedback
KW - Linear dispersion codes
KW - MIMO systems
KW - Space-time block codes
KW - Transmit diversity
UR - http://www.scopus.com/inward/record.url?scp=51649128540&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=51649128540&partnerID=8YFLogxK
U2 - 10.1109/wcnc.2008.40
DO - 10.1109/wcnc.2008.40
M3 - Conference contribution
AN - SCOPUS:51649128540
SN - 9781424419968
T3 - IEEE Wireless Communications and Networking Conference, WCNC
SP - 199
EP - 204
BT - WCNC 2008 - IEEE Wireless Communications and Networking Conference, Conference Proceedings
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - IEEE Wireless Communications and Networking Conference, WCNC 2008
Y2 - 31 March 2008 through 3 April 2008
ER -