A Novel Algorithm for Joint Bit and Power Loading for OFDM Systems with Unknown Interference

被引：0
|
作者：
Bedeer, Ebrahim [1 ]
Marey, Mohamed F. [1 ]
Dobre, Octavia A. [1 ]
Ahmed, Mohamed H. [1 ]
Baddour, Kareem E.
机构：
[1] Mem Univ Newfoundland, Fac Engn & Appl Sci, St John, NF A1B 3X5, Canada
来源：
2012 IEEE INTERNATIONAL CONFERENCE ON COMMUNICATIONS (ICC) | 2012年
基金：
中国国家自然科学基金;
关键词：
Adaptive modulation; bit loading; frequency selective channels; joint optimization; OFDM; power loading; unknown interference; COMMUNICATION-SYSTEMS; DMT APPLICATIONS; ALLOCATION;
D O I：
暂无
中图分类号：
TN [电子技术、通信技术];
学科分类号：
0809 ;
摘要：
In this paper, a novel low complexity bit and power loading algorithm is formulated for orthogonal frequency division multiplexing (OFDM) systems operating in fading environments and in the presence of unknown interference. The proposed non-iterative algorithm jointly maximizes the throughput and minimizes the transmitted power, while guaranteeing a target bit error rate (BER) per subcarrier. Closed-form expressions are derived for the optimal bit and power distributions per subcarrier. The performance of the proposed algorithm is investigated through extensive simulations. A performance comparison with the algorithm in [1] shows the superiority of the proposed algorithm with reduced computational effort.
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页数：6
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