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Fundamentals of Network Planning and Optimisation 2G/3G/4G, 2nd Edition
book

Fundamentals of Network Planning and Optimisation 2G/3G/4G, 2nd Edition

by Ajay R. Mishra
November 2018
Beginner to intermediate content levelBeginner to intermediate
440 pages
13h 21m
English
Wiley
Content preview from Fundamentals of Network Planning and Optimisation 2G/3G/4G, 2nd Edition

Appendix BIntroduction to MIMO and Massive MIMO

Swapnaja Deshpande

Research Fellow, NorthCap University, Haryana, India

B.1 Introduction

This topic briefly reviews the technology of multiple‐input multiple‐output (MIMO) in wireless communication. It also discusses the rationale behind why MIMO evolves into massive MIMO with the evolution of wireless technology.

MIMO is a multiple antenna technique used in wireless communication. Multiple antenna techniques are categorised as ‘diversity techniques’ and ‘spatial multiplexing techniques’. In the former technique, the same signal is received through multiple antennas at the receiver or transmitted through multiple antennas at the transmitter thereby increasing transmission reliability. Thus, multiple antennas can be used to provide diversity gain and increase the reliability of wireless links if both transmit and receive diversity are considered. In spatial multiplexing, multiple independent streams can be transmitted simultaneously thereby increasing transmission speed. In the spatial multiplexing technique, maximum achievable transmission speed can be same as the capacity of the MIMO channel, but in the case of the diversity technique the achievable transmission speed is much lower than the capacity of the MIMO channel. There are several different uses of multiple antennas in wireless communication. With channel state information at the transmitter, multiple transmit antennas provide channel gain with transmit beamforming. Herein, ...

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Publisher Resources

ISBN: 9781119331711Purchase book