CoMP is the key technology of LTE-A which can effectively avoid the same frequency interference
improves the throughput of cell edge users. Through the comparison of the three technologies in the DL CoMP
the characteristics of the three are summarized. Combined with the tests of CoMP
the algorithm process and operation mechanism of DL CoMP are analyzed. Accord the comparison of the effect of optimization and combined with the verification of improvion of the download speed of base station which open the CoMP function