Reduction of Feedback Based-on User Traffic Rate in OFDM Relay System
Автор: Qian-Bin Chen, Guang-Jian Jiang, Lun Tang
Журнал: International Journal of Wireless and Microwave Technologies(IJWMT) @ijwmt
Статья в выпуске: 5 Vol.1, 2011 года.
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In order to reduce feedback while maintaining user performance in multiuser orthogonal frequency division multiplexing (OFDM) relay system, feedback mechanism based on user traffic rate is proposed. From the aspects of feedback outage probability, user weighted channel gain related to user traffic rate is compared with the system threshold. The higher user traffic rate is, the bigger the user traffic weight becomes. So the high traffic rate user has greater probability to be fed back, which can support different traffic rate. Simulation results show that the proposed feedback mechanism can bring more feedback sub-carriers to the user with high traffic rate.
Feedback reduction, traffic rate, OFDM, relay
Короткий адрес: https://sciup.org/15012762
IDR: 15012762
Список литературы Reduction of Feedback Based-on User Traffic Rate in OFDM Relay System
- Bin Fan, Wenbo Wang, Yicheng Lin, Lin Huang and Kan Zheng, "Subcarrier allocation for OFDMA relay networks with proportional fair constraint", Communication, 2009. ICC'09. Dresden:2009.6:1-5.
- Tang Z H, Zhu Y T and Wei G, "Threshold setting of channel limited feedback in OFDM", Journal of Electronics & Information Technology, 2007,29(4): 933-937(in Chinese)
- YANG Ruizhe, YUAN Chaowei, TENG Yinglei and ZHAGN Yanhua, "Feedback Threshold with Guaranteed QoS in Multiuser OFDM Systems", THE JOURNAL OF CHINA UNIVERSITIES OF POSTS AND TELECOMMUNICATIONS，2009,16（2）：24-28.
- Seung Young Park, "Performance of Differentiated Rate Scheduling Using Contention-Based CSI Feedback", VEHICULAR TECHNOLOGY, 2010,59(2):3143-3148.
- Yi Shi, Wei Zhang and Ben Letaief,K, "Cooperative Multiplexing and Scheduling in Wireless Relay Networks", Communication, 2008. ICC'08. Beijing:2008,5:3034-3038.
