원문정보
Precoding Method for Increasing System Capacity in Multiuser MIMO Downlink Channels
초록
영어
In this paper, we study precoding techniques for co-channel interference suppression in multiuser MIMO systems. DPC is optimal techniques to achieve the system capacity of multiuser MIMO downlink channels. DPC is not proper in practical wireless systems because complexity is very high. So block diagonal precoding for multiuser MIMO downlink channel is studied. The block diagonal precoding is used to suppress co-channel interference between multiuser. Block diagonal precoding method, whose complexity is reduced by modified null space operation, change multiuser MIMO channel to multiple single-user MIMO channel. We also
use V-BLAST decoder in receiver. V-BLAST decoder can achieve increased system capacity in proportion to the number of users. We show improved system performance by using computer simulation.
목차
I. 서론
II. 시스템 모델과 기존 블록 대각화 기법
1. 시스템 모델
2. 기존 블록 대각화 기법
III. 제안하는 시스템 모델
1. 낮은 복잡도의 프리코딩 계산 방법
2. 수신단의 V-BLAST 기법
IV. 실험 결과
V. 결론
참고문헌