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Channel Estimation and Carrier Recovery in the Presence of Phase Noise in OFDM Relay Systems
2014 IEEE Global Communications Conference (2014)
  • Rui Wang, Tongji University
  • Hani Mehrpouyan, California State University
  • Meixia Tao, Shanghai Jiao Tong University
  • Yingbo Hua, University of California, Riverside
Abstract
In this paper, we analyze joint channel, carrier frequency offset (CFO), and phase noise estimation in orthogonal frequency division multiplexing (OFDM) relaying networks. To achieve this goal, a detailed transmission framework involving both training and data symbols is first presented. Next, a novel algorithm that applies the training symbols to jointly estimate the channel responses, CFO, and phase noise parameters based on the maximum a posteriori criterion is proposed. Additionally, to evaluate the performance of the proposed channel estimation and carrier recovery algorithms, we analyze the ambiguities among the estimated parameters. Based on this analysis, a new Hybrid Cramér-Rao Lower Bound (HCRLB) is derived, which can effectively avoid such ambiguities. The simulation results show that the proposed estimation algorithm can achieve a performance close to the derived HCRLB.
Keywords
  • channel estimation,
  • estimation,
  • joints,
  • OFDM,
  • relays,
  • training
Publication Date
2014
Publisher Statement
© 2014 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.2014.7037337
Citation Information
Rui Wang, Hani Mehrpouyan, Meixia Tao and Yingbo Hua. "Channel Estimation and Carrier Recovery in the Presence of Phase Noise in OFDM Relay Systems" 2014 IEEE Global Communications Conference (2014)
Available at: http://works.bepress.com/hani_mehrpouyan/4/