TY - GEN
T1 - Adaptive modulation technique with partial CQI for multiuser OFDMA systems
AU - Kwon, Jung Hyoung
AU - Rhee, Duho
AU - Byun, II Mu
AU - Whang, Younghoon
AU - Kim, Kwang Soon
PY - 2006
Y1 - 2006
N2 - In this paper, we present a new scheme for sub-band allocation in multiuser downlink orthogonal frequency division multiple access (OFDMA) systems with partial channel quality information (CQI). Our objective is to maximize the total throughput of the system under the constraints of transmit power. In previous methods, each user in a cell transmits CQI of its all sub-bands to the base station, which requires extremely high feedback overhead. Thus, we propose an efficient sub-band allocation algorithm in which each user transmits partial CQI and one additional information to reduce the amount of feedback. Simulation results show that we can greatly reduce the amount of feedback than full feedback system.
AB - In this paper, we present a new scheme for sub-band allocation in multiuser downlink orthogonal frequency division multiple access (OFDMA) systems with partial channel quality information (CQI). Our objective is to maximize the total throughput of the system under the constraints of transmit power. In previous methods, each user in a cell transmits CQI of its all sub-bands to the base station, which requires extremely high feedback overhead. Thus, we propose an efficient sub-band allocation algorithm in which each user transmits partial CQI and one additional information to reduce the amount of feedback. Simulation results show that we can greatly reduce the amount of feedback than full feedback system.
UR - http://www.scopus.com/inward/record.url?scp=33750948010&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=33750948010&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:33750948010
SN - 8955191294
SN - 9788955191295
T3 - 8th International Conference Advanced Communication Technology, ICACT 2006 - Proceedings
SP - 1283
EP - 1286
BT - 8th International Conference Advanced Communication Technology, ICACT 2006 - Proceedings
T2 - 8th International Conference Advanced Communication Technology, ICACT 2006
Y2 - 20 February 2006 through 22 February 2006
ER -