Decoupled signal detection for the uplink of massive MIMO in 5G heterogeneous networks

Abstract

Massive multiple-input multiple-output (MIMO) systems are strong candidates for future fifth-generation (5G) heterogeneous cellular networks. For 5G, a network densification with a high number of different classes of users and data service requirements is expected. Such a large number of connected devices needs to be separated in order to allow the detection of the transmitted signals according to different data requirements. In this paper, a decoupled signal detection (DSD) technique which allows the separation of the uplink signals, for each user class, at the base station (BS) is proposed for massive MIMO systems. A mathematical signal model for massive MIMO systems with centralized and distributed antennas in heterogeneous networks is also developed. The performance of the proposed algorithm is evaluated and compared with existing detection schemes in a realistic scenario with distributed antennas. A sum-rate analysis and a computational cost study for DSD are also presented. Simulation results show an excellent performance of the proposed algorithm when combined with linear and successive interference cancellation detection techniques.

ISSOR Signal Detection for Energy Efficient and Low Complexity Large Scale MIMO System

“…According to the different data requirements, most of the joined devices are must be isolated for reconstructing the signals which are transmitted. The main investigation challenge is to proceed the signals which are obtained at the BS with less computational complexity [6]. Different signal detection algorithms are used to achieve the optimal signal detection and reduced complexity.…”

Receivers for the up-link of multiuser MIMO systems with Spatial Modulation

“…3) Projection in the null space of the interferences using MMSE filtering (D-MMSE): The decoupler D-MMSE proposed in [4], [5], is obtained partitioning MMSE channel matrix of H given by…”