冲突无线宽带系统中 MMSE 抽取接收机的最优与次优指纹选择算法
摘要
考虑冲突无线宽带系统中最小均方误差（MMSE）选择性抽取接收机的optimal multipath components选择问题。首先，将optimal finger selection问题形式化为一个具有非凸目标函数的整数规划问题。然后，用凸函数近似该目标函数，并通过约束松弛技术求解整数规划问题。由于目标函数近似和约束松弛步骤，这些算法是次优的。然而，它们比忽略多径分量之间相关性的传统指纹选择算法表现更好，并且可以接近实际中无法实现的optimal方案（由于其复杂性）。除了凸松弛技术外，还提出了一种基于遗传算法（GA）的方法，该方法不需要任何近似或整数松弛。该迭代算法基于对目标函数的直接评估，可在合理的迭代次数内实现接近optimal的性能。 presented simulation results to compare the performance of the proposed finger selection algorithms with that of the conventional and the optimal schemes. Simulation results are presented to compare the performance of the proposed finger selection algorithms with that of the conventional and the optimal schemes.
关键词
引用
@article{arxiv.cs/0604092,
title = {Optimal and Suboptimal Finger Selection Algorithms for MMSE Rake Receivers in Impulse Radio UWB Systems},
author = {Sinan Gezici and Mung Chiang and H. Vincent Poor and Hisashi Kobayashi},
journal= {arXiv preprint arXiv:cs/0604092},
year = {2007}
}
备注
Submitted to the EURASIP Journal on Wireless Communications and Networking - Special Issue on Ultra-Wideband (UWB) Communication Systems - Technology and Applications