期刊名称：International Journal of Computer Trends and Technology
电子版ISSN：2231-2803
出版年度：2013
卷号：5
期号：3
出版社：Seventh Sense Research Group
摘要：This paper presents a novel fair scheme for resource sharing between nodes in OFDMA mesh networks. The problem is to maximize the overall system rate, under each user’s maximal power and minimum rate constraints. To solve the underlying problem, we propose an approach that maximizes system capacity based on available errorfree instantaneous estimated channel state information at the transmitter node. Optimal power distribution between different sub channels is computed analytically, and it is shown that equal power allocation among subcarriers is almost near the optimum capacity. In this paper we also showed BER performance of LSE channel estimation by taking different pilot energies and modulation techniques.
关键词：OFDMA; WMN; Pilot signals; Lambert’s W-function
