Carrier frequency offset and channel estimation in space-time non-regenerative two-way relay network

L. B. Thiagarajan, Sumei Sun, Tony Q.S. Quek

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

6 Citations (Scopus)

Abstract

Two-way relaying is an effective approach to exchange information between two simultaneously transmitting sources in wireless fading environment. Space-time non-regenerative relaying aids to keep the relay hardware simple and cheap. Accurate estimates for the channel and carrier frequency offset (CFO) are required by the receiver to reap the benefits from relaying. In this paper, we propose a training frame format for relay transmission and formulate a subspace based CFO and channel estimator. The estimation problem is shown to be similar to the joint CFO and channel estimation in a multiuser uplink system. Furthermore, the relay and source nodes are not required to adjust their carrier frequencies. Numerical results show that the mean square error performance of the proposed estimators can reach their corresponding Cramer-Rao lower bounds.

Original languageEnglish
Title of host publication2009 IEEE 10th Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2009
Pages270-274
Number of pages5
DOIs
Publication statusPublished - 2009
Event2009 IEEE 10th Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2009 - Perugia, Italy
Duration: 2009 Jun 212009 Jun 24

Publication series

NameIEEE Workshop on Signal Processing Advances in Wireless Communications, SPAWC

Conference

Conference2009 IEEE 10th Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2009
CountryItaly
CityPerugia
Period09-06-2109-06-24

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering
  • Computer Science Applications
  • Information Systems

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