Downlink spectral efficiency of ZF precoding based multi-user MIMO system over weibull fading channel

Keerti Tiwari, Prabhat Thakur

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Frequency division duplex (FDD) and time-division duplex (TDD) are two different ways of executing the downlink and uplink transmission over a given frequency band. In which, TDD is the superior mode due to less pilots’ requirement than FDD and its highly scalable quality, where the pilot length is independent of the number of base station (BS) antennas. The linear precoding scheme i.e., zero forcing (ZF) is simple and easy to implement. Therefore, this paper uses ZF for the performance comparison of multi-user multiple-input multiple-output (MU MIMO) system on the basis of downlink spectral efficiency (SE) obtained with perfect channel state information (CSI) and with CSI estimated through pilot sequences of a specified length. The SE is illustrated as a function of the number of BS antennas using TDD and FDD mode over a Weibull fading channel which considers favorable propagation case. The SE increases even after decreasing the signal to noise ratio (SNR). It is practically viable to organize FDD systems with many antennas, mainly for slow-varying channels where we can take a large pilot overhead, but TDD is preferable in this situation.

Original languageEnglish
Title of host publicationAdvanced Computational and Communication Paradigms - Proceedings of International Conference on ICACCP 2017
EditorsSiddhartha Bhattacharyya, Tapan Gandhi, Kalpana Sharma, Paramartha Dutta
PublisherSpringer Verlag
Pages431-437
Number of pages7
ISBN (Print)9789811082399
DOIs
Publication statusPublished - 2018
Externally publishedYes
Event1st International Conference on Advanced Computational and Communication Paradigms, ICACCP 2017 - Majitar, India
Duration: 8 Sept 201710 Sept 2017

Publication series

NameLecture Notes in Electrical Engineering
Volume475
ISSN (Print)1876-1100
ISSN (Electronic)1876-1119

Conference

Conference1st International Conference on Advanced Computational and Communication Paradigms, ICACCP 2017
Country/TerritoryIndia
CityMajitar
Period8/09/1710/09/17

Keywords

  • Channel state information (CSI)
  • Frequency division duplex (FDD)
  • Spectral efficiency (SE)
  • Time-division duplex (TDD)
  • Weibull fading
  • Zero forcing (ZF)

ASJC Scopus subject areas

  • Industrial and Manufacturing Engineering

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