TY - GEN
T1 - Effective rate maximization in large MIMO multiuser system
AU - Choi, Ilgyu
AU - Lee, Chungyong
PY - 2012
Y1 - 2012
N2 - Large MIMO system can achieve high data rate with simple linear transceiver. However, for this advantage, long time is required to estimate channel state information (CSI) at base station (BS). When estimation time is not negligible in coherence time, there exists tradeoff between estimation and data transmission. With long estimation time, data rate increases, but data transmission time decreases. Otherwise, with short estimation time, data rate decreases, but data transmission time increases. Therefore, maximizing not data rate itself but effective rate is required in large MIMO system. We mathematize an effective rate problem in a reasonable large MIMO system, and prove its concavity and find the optimal tradeoff point.
AB - Large MIMO system can achieve high data rate with simple linear transceiver. However, for this advantage, long time is required to estimate channel state information (CSI) at base station (BS). When estimation time is not negligible in coherence time, there exists tradeoff between estimation and data transmission. With long estimation time, data rate increases, but data transmission time decreases. Otherwise, with short estimation time, data rate decreases, but data transmission time increases. Therefore, maximizing not data rate itself but effective rate is required in large MIMO system. We mathematize an effective rate problem in a reasonable large MIMO system, and prove its concavity and find the optimal tradeoff point.
UR - http://www.scopus.com/inward/record.url?scp=84886028855&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84886028855&partnerID=8YFLogxK
U2 - 10.1109/CEWIT.2012.6606978
DO - 10.1109/CEWIT.2012.6606978
M3 - Conference contribution
AN - SCOPUS:84886028855
SN - 9781467325042
T3 - 2012 9th International Conference and Expo on Emerging Technologies for a Smarter World, CEWIT 2012
BT - 2012 9th International Conference and Expo on Emerging Technologies for a Smarter World, CEWIT 2012
PB - IEEE Computer Society
T2 - 2012 9th International Conference and Expo on Emerging Technologies for a Smarter World, CEWIT 2012
Y2 - 5 November 2012 through 6 November 2012
ER -