Channel Estimation using In-Band Pilots for Uplink Massive MIMO

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

Abstract

In this paper, we extend the channel estimation technique using in-band pilots (IBP) for uplink DFT-Precoded OFDM single input single output (SISO) to massive multiple input multiple output (MIMO) system and compare its performance with that of using time domain superimposed pilots (SP). We derive analytical expression for the mean square error (MSE) of least square channel estimation using IBP and show that IBP outperforms SP when the data frequencies are removed for the accommodation of pilot frequencies. Moreover, we compare the signal-to-interference ratio (SINR), bit error rate (BER), and peak-to-average power ratio (PAPR) performance of the DFT-precoded OFDM signal with IBP and SP. It was found that the removal of a small portion of the pilot frequencies has negligible effect on the PAPR performance and that IBP gives slightly better BER and SINR performance over SP, depending on the number of antennas and the total number of users in the system.

Original languageEnglish
Title of host publication2021 IEEE 21st International Conference on Communication Technology, ICCT 2021
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages268-273
Number of pages6
ISBN (Electronic)9781665432061
DOIs
Publication statusPublished - 2021
Event21st IEEE International Conference on Communication Technology, ICCT 2021 - Tianjin, China
Duration: 13 Oct 202116 Oct 2021

Publication series

NameInternational Conference on Communication Technology Proceedings, ICCT
Volume2021-October

Conference

Conference21st IEEE International Conference on Communication Technology, ICCT 2021
Country/TerritoryChina
CityTianjin
Period13/10/2116/10/21

Keywords

  • DFT-precoded OFDM
  • channel estimation
  • inband pilots
  • superimposed pilots
  • uplink massive MIMO

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