正交频分复用传输速率最大化自适应水声通信算法研究

发布时间：2018-05-08 07:38

本文选题：水声通信 + 正交频分复用(OFDM)　；参考：《电子与信息学报》2015年12期

【摘要】：该文在对正交频分复用(OFDM)水声通信速率最大化问题建模基础上,对注水算法的运算量进行了合理简化,实现了对子载波初始能量的快速分配。针对固定判决门限离散比特分配算法存在的码元能量严重浪费和速率损失问题,提出了基于贪婪的比特分配方案,以较小的计算量代价实现了OFDM通信速率的显著提高。研究表明,在压缩信道编码的不完全信道估计下,新算法仍具有良好的通信速率及误码率性能,适用于时变水声信道。
[Abstract]:On the basis of modeling the maximum rate of OFDM (orthogonal Frequency Division Multiplexing) underwater acoustic communication, this paper simplifies the calculation of the water injection algorithm and realizes the fast distribution of the initial energy of subcarriers. Aiming at the serious waste of symbol energy and rate loss in the fixed decision threshold discrete bit allocation algorithm, a greedy bit allocation scheme is proposed, which can significantly improve the OFDM communication rate at a small computational cost. The results show that the new algorithm still has good performance of communication rate and bit error rate under the incomplete channel estimation of compressed channel coding and is suitable for time-varying underwater acoustic channels.
【作者单位】：海军工程大学电子工程学院;海军青岛水警区后勤部舰艇教练室;
【基金】：国家自然科学基金(61101205)~~
【分类号】：TN929.3

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