A Single-RF Architecture for Multiuser Massive MIMO via Reflecting Surfaces

03/17/2020
by   Ali Bereyhi, et al.
0

In this work, we propose a new single-RF MIMO architecture which enjoys high scalability and energy-efficiency. The transmitter in this proposal consists of a single RF illuminator radiating towards a reflecting surface. Each element on the reflecting surface re-transmits its received signal after applying a phase-shift, such that a desired beamforming pattern is obtained. For this architecture, the problem of beamforming is interpreted as linear regression and a solution is derived via the method of least-squares. Using this formulation, a fast iterative algorithm for tuning of the reflecting surface is developed. Numerical results demonstrate that the proposed architecture is fully compatible with current designs of reflecting surfaces.

READ FULL TEXT
POST COMMENT

Comments

There are no comments yet.

Authors

page 1

page 2

page 3

page 4

05/28/2021

Hybrid Beamforming for Intelligent Reflecting Surface Aided Millimeter Wave MIMO Systems

While communication systems that employ millimeter wave (mmWave) frequen...
12/04/2021

Configuring Intelligent Reflecting Surface with Performance Guarantees: Optimal Beamforming

This work proposes linear time strategies to optimally configure the pha...
02/14/2020

Coordinated Passive Beamforming for Distributed Intelligent Reflecting Surfaces Network

Intelligent reflecting surface (IRS) is a proposing technology in 6G to ...
12/21/2019

Passive Beamforming and Information Transfer Design for Reconfigurable Intelligent Surfaces Aided Multiuser MIMO Systems

This paper investigates the passive beamforming and information transfer...
12/02/2019

Joint Active and Passive Beamforming for Intelligent Reflecting Surface-Assisted Massive MIMO Systems

In this paper, we study the problem of joint active and passive beamform...
04/16/2021

A Simple Single RF-Chain Multi-Antenna Full-Duplex Relay Can Outperform An Intelligent Reflecting Surface

In this paper, we propose a single RF-chain multi-antenna full-duplex (F...
10/21/2019

Application of Reinforcement Learning for 5G Scheduling Parameter Optimization

RF Network parametric optimization requires a wealth of experience and k...
This week in AI

Get the week's most popular data science and artificial intelligence research sent straight to your inbox every Saturday.