一种改进的平滑L0快速压缩信道估计算法
A Fast Compressive Channel Estimation with Modified Smoothed L0 Algorithm
摘要：
宽带无线信道具有时间色散性和强频率选择性。在大多数情况下，信道由几个主导系数组成，并且大部分系数近似为零或零。为了利用多径信道（MPC）的稀疏性，已经提出了各种方法。它们是贪心算法、迭代算法和凸规划。前两种算法易于实现，但不稳定;后一种算法虽然稳定，但由于计算复杂性，难以实现为实际的信道估计问题。本文提出了一种新的信道估计策略，使用改进的平滑（MSL 0）算法，它结合了稳定性和低复杂度。计算机模拟证实了所介绍的算法的有效性与现有的方法相比。我们也给
英文摘要：
Broadband wireless channel is a time dispersive and becomes strongly frequency selective. In most cases, the channel is composed of a few dominant coefficients and a large part of coefficients is approximately zero or zero. To exploit the sparsity of multi-path channel (MPC), there are various methods have been proposed. They are, namely, greedy algorithms, iterative algorithms, and convex program. The former two algorithms are easy to be implemented but not stable; on the other hand, the last method is stable but difficult to be implemented as practical channel estimation problems because of computational complexity. In this paper, we proposed a novel channel estimation strategy by using modified smoothed (MSL0) algorithm which combines stable and low complexity. Computer simulations confirm the effectiveness of the introduced algorithm comparisons with the existing methods. We also give
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
