Theoretical analysis of non-linear quantization of broadband channels

Sara Teodoro, Adão Silva, Rui Dinis, Atílio Gameiro

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

Abstract

Multi-user multi-antenna wireless communications require the knowledge of channel state information (CSI) in order to cancel or mitigate interference between users. The knowledge of this quantization error due to the channel quantization is of extreme importance to theoretically evaluate and improve the performance of limited feedback communications. In this paper we present theoretical expressions for the statistical characterization of the quantization error obtained when a broadband multicarrier channel is quantized in the frequency domain, taking advantage of Gaussian channel behavior for multipath channels. The derived expression is valid for any type of non-linear quantization, and it is validated through Monte Carlo simulations for an interpolated uniform and non-uniform quantization strategies, under different scenarios.

Original languageEnglish
Title of host publication2015 IEEE Conference on Standards for Communications and Networking, CSCN 2015
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages310-314
Number of pages5
ISBN (Electronic)9781479989287
DOIs
Publication statusPublished - 25 Jan 2016
EventIEEE Conference on Standards for Communications and Networking, CSCN 2015 - Tokyo, Japan
Duration: 28 Oct 201530 Oct 2015

Conference

ConferenceIEEE Conference on Standards for Communications and Networking, CSCN 2015
CountryJapan
CityTokyo
Period28/10/1530/10/15

Keywords

  • Channel state information
  • limited feedback
  • MIMO
  • non-linearity
  • quantization

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