대용량 다중사용자 MIMO 시스템의 파일럿 심볼 감소를 위한 압축센싱 알고리즘

초록

The work applies compressive sensing techniques to multi user massive MIMO systems in two ways. First we jointly estimate multiuser MIMO channels using joint support set recovery to reduce the mean squared error. Second we steer the beams using the hybrid beam forming. Numerical results show that the joint channel estimation achieves 2dB gain over the conventional channel estimation scheme.