Blind estimation of multiple carrier frequency offsets

Anning Yu, Athina P. Petropulu, H. Vincent Poor, Visa Koivunen

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

12 Scopus citations

Abstract

Multiple carrier-frequency offsets (CFO) arise in a distributed antenna system, where data are transmitted simultaneously from multiple antennas. In such systems the received signal contains multiple CFOs due to mismatch between the local oscillators of transmitters and receiver. This results in a time-varying rotation of the data constellation, which needs to be compensated for at the receiver before symbol recovery. This paper proposes a new approach for blind CFO estimation and symbol recovery. The received base-band signal is over-sampled, and its polyphase components are used to formulate a virtual Multiple-Input Multiple-Output (MIMO) problem. By applying blind MIMO system estimation techniques, the system response is estimated and used to subsequently transform the multiple CFOs estimation problem into many independent single CFO estimation problems. Furthermore, an initial estimate of the CFO is obtained from the phase of the MIMO system response. The Cramer-Rao Lower bound is also derived, and the large sample performance of the proposed estimator is compared to the bound.

Original languageEnglish (US)
Title of host publication18th Annual IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC'07
DOIs
StatePublished - Dec 1 2007
Event18th Annual IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC'07 - Athens, Greece
Duration: Sep 3 2007Sep 7 2007

Publication series

NameIEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC

Other

Other18th Annual IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC'07
CountryGreece
CityAthens
Period9/3/079/7/07

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering

Keywords

  • Blind MIMO system identification
  • Carrier frequency offset
  • Distributed antenna systems
  • Multi-user systems

Fingerprint Dive into the research topics of 'Blind estimation of multiple carrier frequency offsets'. Together they form a unique fingerprint.

  • Cite this

    Yu, A., Petropulu, A. P., Poor, H. V., & Koivunen, V. (2007). Blind estimation of multiple carrier frequency offsets. In 18th Annual IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC'07 [4394103] (IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC). https://doi.org/10.1109/PIMRC.2007.4394103