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Myeongyun Cho, Woohyun Seo, Youngsoo Kim and Daesik Hong, "A Joint Feedback Reduction Scheme Using Delta Modulation for Dynamic Channel Allocation in OFDMA Systems", PIMRC, Sep. 2005
[IEEE PIMRC]
조회 67714
Status : | Presented |
---|---|
Date : | 2005-09 |
Title : | A Joint Feedback Reduction Scheme Using Delta Modulation for Dynamic Channel Allocation in OFDMA Systems |
Authors : | Myeongyun Cho, Woohyun Seo, Youngsoo Kim and Daesik Hong |
Conference : | IEEE International Symposium on Personal, Indoor and Mobile Radio Communications |
Abstract : | A novel feedback-reduction scheme is proposed for dynamic channel allocation (DCA) in OFDMA systems. Applying this delta-modulation (DM)-based scheme to the channel gain of adjacent subcarriers reduces the feedback information to 1 bit per subcarrier. Since this reduced feedback information can lead to performance degradation in the form of an increased bit error rate (BER), a modified amplitude craving greedy (ACG) method and improved DM are jointly adopted to minimize the loss. Simulation results verify that the proposed scheme can decrease feedback information by a factor of 1/M while retaining performance comparable to the full feedback case, which requires M bits per subcarrier as feedback information. |
URL : | http://ieeexplore.ieee.org/xpl/articleDe...MA+Systems |
Download : | http://mirinae.yonsei.ac.kr/?module=file...50d3b848fb |
Myeon-gyun Cho; Woohyun Seo; Youngsoo Kim; Daesik Hong; , "A joint feedback reduction scheme using delta modulation for dynamic channel allocation in OFDMA systems," Personal, Indoor and Mobile Radio Communications, 2005. PIMRC 2005. IEEE 16th International Symposium on , vol.4, no., pp.2747-2750 Vol. 4, 11-14 Sept. 2005
doi: 10.1109/PIMRC.2005.1651942
URL: http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=1651942&isnumber=34629
doi: 10.1109/PIMRC.2005.1651942
URL: http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=1651942&isnumber=34629
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