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Effective Capacity Based Resource Allocation Scheme in OFDMA for Time-varying Channels |
Liu Bei Qiu Ling |
Personal Communication Network and Spread Spectrum Laboratory,University of Science and Technology of China, Hefei 230027, China |
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Abstract The effective capacity of the multi-user OFDMA (Orthogonal Frequency-Division Multiple Access) system for time-varying channel is characterized. Then to maximize the system average effective capacity, through the Tayler approximation, an asymptotical optimal user scheduling is proposed, which selects users based on the relationships among the moving speed, traffic profile and the effective capacity. By means of simulations, it is further shown that the proposed scheme can improve the effective capacity of the mobile hosts.
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Received: 23 December 2010
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Corresponding Authors:
Qiu Ling
E-mail: lqiu@ustc.edu.cn
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