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Estimation, Training, and Effect of Timing Offsets in Distributed Cooperative Networks
2010 IEEE Global Telecommunications Conference (2010)
  • Hani Mehrpouyan
  • Steven D. Blostein
Abstract
Successful collaboration in cooperative networks requires accurate estimation of multiple timing offsets. When combined with signal processing algorithms, the estimated timing offsets can be applied to mitigate the resulting inter-symbol interference (ISI). This paper seeks to address timing synchronization in distributed multi-relay amplify-and-forward (AF) and decode-andforward (DF) relaying networks, where timing offset estimation using a training sequence is analyzed. First, training sequence design guidelines are presented that are shown to result in improved estimation performance. Next, two iterative estimators are derived that can determine multiple timing offsets at the destination. The proposed estimators have a considerably lower computational complexity while numerical results demonstrate that they are accurate and reach or approach the Cramer-Rao lower bound (CRLB).
Keywords
  • maximum likelihood estimation,
  • relays,
  • signal to noise ratio,
  • synchronization,
  • training
Publication Date
2010
Publisher Statement
© 2010 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works. doi: 10.1109/GLOCOM.2010.5683386
Citation Information
Hani Mehrpouyan and Steven D. Blostein. "Estimation, Training, and Effect of Timing Offsets in Distributed Cooperative Networks" 2010 IEEE Global Telecommunications Conference (2010)
Available at: http://works.bepress.com/hani_mehrpouyan/40/