Transmission Experiments of Inter-Terminal Communications in Higher-Frequency Bands for Terminal Collaborated MIMO Reception

Abstract

Multi-user multiple-input multiple-output (MU-MIMO) systems with precoding have been studied intensively. However, those systems have feedback delay that causes severe performance degradation. To cope with this problem, an MU-MIMO system using a collaborative interference cancellation (CIC) scheme is proposed. In this scheme, received signal sharing among collaborated mobile stations is employed. In this paper, CIC employing LDPC code and frequency-domain iterative equalization is studied to improve the performance of MIMO transmission.