Pilot frequency distribution method in distributed compressive sensing (DCS) channel estimation

[0039] Below in conjunction with accompanying drawing, technical scheme of the present invention is described in further detail:

[0040] The present invention contains two main technical problems, one is the acquisition of pilot position optimization criteria, so that the pilot position optimization problem is modeled as a combinatorial optimization problem; the other is to propose a genetic algorithm to solve the combinatorial optimization problem, thereby obtaining the optimal An optimal set of pilot locations. The implementation of these two parts will be introduced below, and the beneficial effect of this pilot allocation method on improving the performance of channel estimation based on distributed compressed sensing will be illustrated through simulation.

[0041] (1) Acquisition of pilot optimization criteria

[0042]We consider a N T transmit antennas and N R A point-to-point MIMO-OFDM system with one receiving antenna, its block diagram is as follows figure 1 shown.