Abstract: A joint antenna selection and decremental user scheduling algorithm was given to solve the problem on high hardware complexity, and the maximum number of users affected by base station antennas for massive multiple-input multiple-output system was discussed. The scheme is to maximize the sum rate and reduce the number of radio frequency chains by removing the worst antennas and users. Simulations show that the proposed scheme can greatly lower the hardware complexity on the premise of guaranteeing the system performance.

Key words: massive multiple-input multiple-output, antenna selection, user scheduling, hardware complexity