An accurate low complexity method for studying quantization effects in base station cooperation systems

João Guerreiro, Filipe C. Ribeiro, Rui Dinis

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Base station (BS) cooperation schemes allow substantial spectral efficiency gains since users in adjacent cells might be able to use the same physical layer resources. To achieve this, the user's signals are detected at a central unit instead of at the BS, as in conventional systems. This means that the BS must sample and quantize the received signals and send them to the central unit through backhaul links. To reduce the required load in the backhaul links it is desirable to quantize the signals with a relatively small number of bits, which can lead to substantial quantization errors. In this paper we present a simple, yet accurate method for evaluating quantization effects in BS cooperation schemes. Our approach is to define an equivalent polynomial nonlinearity with relatively small degree that leads to signals with essentially the same spectral characteristics as the quantized signals. Our results show that the equivalent nonlinearity allows very accurate estimates of the variance of the quantization noise, as well as its spectral characterization.

Original languageEnglish
Title of host publication2015 IEEE 82nd Vehicular Technology Conference, VTC Fall 2015 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)978-1-4799-8091-8
DOIs
Publication statusPublished - 25 Jan 2016
Event82nd IEEE Vehicular Technology Conference, VTC Fall 2015 - Boston, United States
Duration: 6 Sep 20159 Sep 2015

Conference

Conference82nd IEEE Vehicular Technology Conference, VTC Fall 2015
CountryUnited States
CityBoston
Period6/09/159/09/15

Keywords

  • Base station cooperation
  • IB-DFE
  • Quantization
  • SC-FDE

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    Guerreiro, J., Ribeiro, F. C., & Dinis, R. (2016). An accurate low complexity method for studying quantization effects in base station cooperation systems. In 2015 IEEE 82nd Vehicular Technology Conference, VTC Fall 2015 - Proceedings [7390835] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/VTCFall.2015.7390835