Adaptive modulation technique with partial CQI for multiuser OFDMA systems

Jung Hyoung Kwon, Duho Rhee, II Mu Byun, Younghoon Whang, Kwang Soon Kim

Research output: Chapter in Book/Report/Conference proceedingConference contribution

6 Citations (Scopus)

Abstract

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.

Original languageEnglish
Title of host publication8th International Conference Advanced Communication Technology, ICACT 2006 - Proceedings
Pages1283-1286
Number of pages4
Publication statusPublished - 2006 Nov 17
Event8th International Conference Advanced Communication Technology, ICACT 2006 - Phoenix Park, Korea, Republic of
Duration: 2006 Feb 202006 Feb 22

Publication series

Name8th International Conference Advanced Communication Technology, ICACT 2006 - Proceedings
Volume2

Other

Other8th International Conference Advanced Communication Technology, ICACT 2006
CountryKorea, Republic of
CityPhoenix Park
Period06/2/2006/2/22

Fingerprint

Adaptive modulation
Frequency division multiple access
Feedback
Base stations
Throughput

All Science Journal Classification (ASJC) codes

  • Engineering(all)

Cite this

Kwon, J. H., Rhee, D., Byun, II. M., Whang, Y., & Kim, K. S. (2006). Adaptive modulation technique with partial CQI for multiuser OFDMA systems. In 8th International Conference Advanced Communication Technology, ICACT 2006 - Proceedings (pp. 1283-1286). [1625810] (8th International Conference Advanced Communication Technology, ICACT 2006 - Proceedings; Vol. 2).
Kwon, Jung Hyoung ; Rhee, Duho ; Byun, II Mu ; Whang, Younghoon ; Kim, Kwang Soon. / Adaptive modulation technique with partial CQI for multiuser OFDMA systems. 8th International Conference Advanced Communication Technology, ICACT 2006 - Proceedings. 2006. pp. 1283-1286 (8th International Conference Advanced Communication Technology, ICACT 2006 - Proceedings).
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Kwon, JH, Rhee, D, Byun, IIM, Whang, Y & Kim, KS 2006, Adaptive modulation technique with partial CQI for multiuser OFDMA systems. in 8th International Conference Advanced Communication Technology, ICACT 2006 - Proceedings., 1625810, 8th International Conference Advanced Communication Technology, ICACT 2006 - Proceedings, vol. 2, pp. 1283-1286, 8th International Conference Advanced Communication Technology, ICACT 2006, Phoenix Park, Korea, Republic of, 06/2/20.

Adaptive modulation technique with partial CQI for multiuser OFDMA systems. / Kwon, Jung Hyoung; Rhee, Duho; Byun, II Mu; Whang, Younghoon; Kim, Kwang Soon.

8th International Conference Advanced Communication Technology, ICACT 2006 - Proceedings. 2006. p. 1283-1286 1625810 (8th International Conference Advanced Communication Technology, ICACT 2006 - Proceedings; Vol. 2).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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AU - Kwon, Jung Hyoung

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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.

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M3 - Conference contribution

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Kwon JH, Rhee D, Byun IIM, Whang Y, Kim KS. Adaptive modulation technique with partial CQI for multiuser OFDMA systems. In 8th International Conference Advanced Communication Technology, ICACT 2006 - Proceedings. 2006. p. 1283-1286. 1625810. (8th International Conference Advanced Communication Technology, ICACT 2006 - Proceedings).