Paper Details

This paper presents the concept of spatial modulation (SM) scheme for the Massive MIMO system. Weconsider the Massive MIMO system where K users, each equipped with multiple antennas, are jointly serviced by amulti-antenna base station transmitter (BSTx) using appropriate precoding scheme at the BSTx. The main ideaintroduced here is the utilization of the user’s subchannel index corresponding to the precoding matrix used at the BSTx,to convey extra useful information. This idea has not been explored, and it provides significant throughput enhancementsin a multiuser system with large number of users. We examine the performance of the proposed scheme by numericalsimulations. The results show that as the number of users and the receiving antennas for each user increase, the overallsystem throughput gets better, albeit at the cost of some degradation in the BER perfor mance due to inter-antennainterference (IAI) experienced at the receiver. We then explore zero-padding approach that helps to remove these IAI, inorder to alleviate the BER degradations.

Ashok Chaudhary, Prof. Sameer Trapasiya, “Interference Mitigation in Massive MIMO using Spatial Modulation Concept”, International Journal of Advance Engineering and Research Development (IJAERD), Vol. 2, Issue 5, pp. 1426-1433, May 2015.