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Transactions ID Number: 52-405
Full Name: Qiming Tian
Position: Associate Professor
Age: ON
Sex: Female
Address: Department of Computer Wenzhou Vocational & Technical College Wenzhou 325035
Country: CHINA
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E-mail address: hzmaoren@gmail.com
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Title of the Paper: A Channel Allocation Scheme for IEEE 802.16 OFDMA System with Dynamic Frequency Reusing
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Number of paper pages: 11
Abstract: The co-channel interference (CCI) in multi-cell wireless networks has long been a major constraint over the system performance. To mitigate CCI, the concepts of frequency reuse and cell sectorization have been devised. In this way, the interference power is attenuated by increased co-channel cell distance and the number of interfering source reduced through regulated transmission direction. In this paper, a novel sub-channel allocation scheme that combines dynamic frequency reuse and cell sectorization is proposed for the IEEE 802.16 OFDMA systems. Based on the multi-user diversity and CCI mitigation, the scheme dynamically adjusts the reuse mode of the subchannels to achieve both high system capacity and good QoS provision. Simulation results show that the resulting system performance is greatly improved compared with the conventional schemes where only fixed reuse mode is supported.
Keywords: Co-channel interference, Channel Allocation, OFDMA, IEEE802.16, Dynamic Frequency reusing
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