Low Complexity Discrete Bit-loading for OFDM Systems with Application in Power Line Communications  

作　　者：Khalifa S. Al-Mawali Amin Z. Sadik Zahir M. Hussain 

机构地区：[1]不详

出　　处：《International Journal of Communications, Network and System Sciences》2011年第6期372-376,共5页通讯、网络与系统学国际期刊（英文）

摘　　要：Adaptive bit-loading algorithms can improve the performance of OFDM systems significantly. The tradeoff between the performance of the algorithm and its computational complexity is essential for the implementation of loading algorithms. In this paper, we present a low complexity non-iterative discrete bit-loading algorithm to maximize the data rate subject to specified target BER and uniform power allocation. Simulation results show that the proposed algorithm outperforms the equal-BER loading and achieves similar rates to incremental allocation, yet with much lower complexity.Adaptive bit-loading algorithms can improve the performance of OFDM systems significantly. The tradeoff between the performance of the algorithm and its computational complexity is essential for the implementation of loading algorithms. In this paper, we present a low complexity non-iterative discrete bit-loading algorithm to maximize the data rate subject to specified target BER and uniform power allocation. Simulation results show that the proposed algorithm outperforms the equal-BER loading and achieves similar rates to incremental allocation, yet with much lower complexity.

关 键 词：Bit-Loading OFDM Power LINE COMMUNICATIONS 

分 类 号：TN91[电子电信—通信与信息系统]