Performance Analysis of Combined Beamforming Technique and Rake Receiver in MIMO Communication Systems

Authors

  • Karim Hamidian, Mohanad Alaamer

Abstract

In recent years, the demands for high data rate and ultra-reliable transmission have been increased in wireless communication systems. These are also two of the several major requirements of 5G-NR. The key technology that achieves these requirements is a combined application of proper channel coding, modulations and Multiple Input Multiple Output (MIMO) systems with a very large number of antennas at both end of the channel. This paper is focused on modulation and MIMO parts. We believe the beamforming method is a promising technique for massive MIMO and 5G-NR.In this paper, we proposed a technique that shows both spatial multiplexing and spatial diversity can be achieved and optimized simultaneously. The proposed model combines the advantages of beamforming technique and rake receiver and uses direct sequence spread spectrum (DSSS) modulation. Rake receiver explodes the multipath propagation and helps to generates time diversity, which enhances the reliability of the MIMO channel. While, the beamforming technique increases the throughput of the system by decupling the MIMO channel into a number independent sub-parallel SISO channels. Simulation confirms the theoretical results obtained.

 

Published

2020-01-31

Issue

Section

Articles