Sea Experimental for Compressive Sensing-Based Sparse Channel Estimation of Underwater Acoustic TDS-OFDM System

Algorithm 1

LAR algorithm

Input: Sparsity , , , newly selected index , previous support set ;

Initialization: The approximate coefficient , residual , the intermediate support set , counter ;

Repeat:

;

, ;     matching the filter values

;               updating support set

;

;

Until or

Output:;