New Interference Alignment Technique using Least Square Method in Multi-User MIMO Systems

Abstract

In this paper, the scheme for designing optimal beamforming matrix for interference control is proposed. The optimal beamforming matrix is found though linear combination of interference alignment conditions and renewal of linear combination coefficient. The proposed scheme has advantages that the complexity is reduced and there is no multiplying operation in matrix calculations even if proposed scheme has the form similar to that of existing least square based scheme. The simulation results show that proposed scheme has about 4bps/Hz higher gain than existing least square scheme. Also there is no additional multiplying calculation and increase of matrix size when the number of transmit and receive antennas is increased. . 최근에는 구현 가능한 방법으로 간섭 정렬(interference alignment) 이 대두되고 있다 [6][7][8][9] . 간섭 정렬은 송수신단의 개수 에 상관없이 다른 사용자들의 간섭을 신호 공간의

Effect of Interference Mitigation Technique and Performance Analysis for Small Cell in Homogeneous Networks

“…경로 손실 모델 Table 3. Path loss model [14,15] , ZF(Zero Forcing) [16] 등의 detection algorithm을 이용하는 signal processing 방식과 VBLAST(Vertical Bell Laboratories Layered SpaceTime) [17] , SIC(Successive Interference Cancellation) [18][19][20] …”