On the interplay between channel sensing and estimation in cognitive radio systems

Mustafa Cenk Gursoy, Sinan Gezici

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

9 Scopus citations

Abstract

Cognitive radio transmissions in the presence of channel uncertainty are considered. In practical scenarios, cognitive secondary users need to perform both channel sensing in order to identify whether the channel is being occupied by the primary users or not, and also channel estimation in order to learn the channel fading coefficients. Generally, errors occur in both channel sensing and estimation, and this leads to a coupling between the two. More specifically, imperfect sensing affects both the structure and the performance of channel estimation schemes. With this motivation, the interactions between channel sensing and estimation are studied in this paper. In particular, different channel estimation schemes including minimum mean-square error (MMSE), linear MMSE, and mismatched MMSE estimations are analyzed, and their dependence on sensing decisions and their performances are investigated.

Original languageEnglish (US)
Title of host publication2011 IEEE Global Telecommunications Conference, GLOBECOM 2011
DOIs
StatePublished - 2011
Externally publishedYes
Event54th Annual IEEE Global Telecommunications Conference: "Energizing Global Communications", GLOBECOM 2011 - Houston, TX, United States
Duration: Dec 5 2011Dec 9 2011

Publication series

NameGLOBECOM - IEEE Global Telecommunications Conference

Other

Other54th Annual IEEE Global Telecommunications Conference: "Energizing Global Communications", GLOBECOM 2011
CountryUnited States
CityHouston, TX
Period12/5/1112/9/11

Keywords

  • Cognitive radio
  • channel estimation
  • channel sensing
  • minimum mean-square error estimation

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

Fingerprint Dive into the research topics of 'On the interplay between channel sensing and estimation in cognitive radio systems'. Together they form a unique fingerprint.

  • Cite this

    Gursoy, M. C., & Gezici, S. (2011). On the interplay between channel sensing and estimation in cognitive radio systems. In 2011 IEEE Global Telecommunications Conference, GLOBECOM 2011 [6133711] (GLOBECOM - IEEE Global Telecommunications Conference). https://doi.org/10.1109/GLOCOM.2011.6133711