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http://dx.doi.org/10.12673/jant.2011.15.3.386

Channel Allocation Method for OFDMA Based Contiguous Resources Units with H-ARQ to Enhance Channel Throughput  

Kim, Sang-Hyun (Department of Information and Telecommunication Engineering, Korea Aerospace University)
Jung, Young-Ho (Department of Information and Telecommunication Engineering, Korea Aerospace University)
Publication Information
Journal of Advanced Navigation Technology / v.15, no.3, 2011 , pp. 386-391 More about this Journal
Abstract
CRU (contiguous resource unit) composed of adjacent OFDMA subcarriers is popularly adopted for recently developed cellular communication standards, e.g. IEEE 802.16e/m. If multiple CRUs having different SNR are assigned to a mobile station, and multiple packet streams are independently transmitted by using H-ARQ transmission, an achievable data rate can be varied according to the channel allocation method of re-transmission packets and new transmission packets. In this paper, the optimum channel allocation method for the above stated problem, and several sub-optimum channel allocation methods to reduce the computational complexity of the optimum allocation method are proposed. According to the simulation results, a sub-optimum allocation method assigning a CRU having good SNR to new transmission packet shows marginal performance loss compared with optimum method, however, the computational complexity can be significantly reduced.
Keywords
band-AMC; Contiguous Resource Unit; scheduler; H-ARQ; OFDMA;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 IEEE Std. 802.16e-2005, "Part 16: Air Interface for Fixed and Mobile Broadband Wireless Access Systems", Feb 2006
2 IEEE Std 802.16m D12, "Amendment to IEEE Standard for Local and Metropolitan Area Networks - Part 16: Air Interface for Broadband Wireless Access Systems - Advanced Air Interface", Mar. 2011.
3 김동철, 신현준, 홍인기, "OFDMA 시스템에서 AMC를 위한 전력할당 방식에 관한 연구", 한국항행학회논문지, 제 9권 2호, 2005. 12.
4 박정식, 조호신, "OFDMA 시스템에서 실시간 트래픽 전송을 위한 효율적 스케쥴링 기법,", 한국통신학회논문지 , 32권 제 1호, 2007. 1.
5 기영민, 김동구, "TDD OFDMA 하향링크에서의 수율 공평성과 서비스 커버리지 보장을 위한 패킷 스케줄러 연구," 한국통신학회논문지, 30권 7A호, 2005. 7.
6 H. W. Kuhn, "The Hungarian method for the assignment problem", Naval. Research. Logistic. Quarterly., pp. 83-97, 1955.