1st International ICST Conference on Communications and Networking in China

Research Article

PT-CMA and PT-MMA for OFDM in Wireless Communication

Cite
BibTeX Plain Text
  • @INPROCEEDINGS{10.1109/CHINACOM.2006.344911,
    author={Babak Haji  Bagher Naeeni and Hamidreza  Amindavar},
    title={PT-CMA and PT-MMA for OFDM in Wireless Communication},
    proceedings={1st International ICST Conference on Communications and Networking in China},
    publisher={IEEE},
    proceedings_a={CHINACOM},
    year={2007},
    month={4},
    keywords={orthogonal frequency Division multiplexing (OFDM) Per tone Constant Modulus algorithm (PT-CMA) per tone multimodulus algorithm (PT-MMA) quadrature amplitude modulation (QAM).},
    doi={10.1109/CHINACOM.2006.344911}
}
  • Babak Haji Bagher Naeeni
    Hamidreza Amindavar
    Year: 2007
    PT-CMA and PT-MMA for OFDM in Wireless Communication
    CHINACOM
    IEEE
    DOI: 10.1109/CHINACOM.2006.344911
Babak Haji Bagher Naeeni1,*, Hamidreza Amindavar2,3,*
  • 1: Sciences and Researches Branch, Islamic Azad University, Adjunct at IRIB university, Tehran, Iran
  • 2: Amirkabir University of Technology, Department of Electrical Engineering
  • 3: Tehran, Iran
*Contact email: bnaeeni@yahoo.com, hamidami@cic.aut.ac.ir

Abstract

In this paper we introduce a new blind adaptive per tone equalization scheme in OFDM systems. The proposed equalizer scheme consists of a (complex) equalizer per tone. In this scheme, we compare the performance of the per tone multimodulus algorithm (PT-MMA) with the per tone constant modulus algorithm (PT-CMA). The PT-CMA for blind equalization requires a separate carrier-recovery system for phase recovery, but the PT-MMA performs joint blind equalization and carrier recovery without the need for a separate carrier-recovery system for QAM signal constellations. The PT-MMA compensates for an additional carrier frequency offset (CFO). The results of our simulations indicate that the PT-MMA can correct the phase error, because it implicitly incorporates a phase-tracking loop, which automatically recovers carrier phase.

Keywords
orthogonal frequency Division multiplexing (OFDM) Per tone Constant Modulus algorithm (PT-CMA) per tone multimodulus algorithm (PT-MMA) quadrature amplitude modulation (QAM).
Published
2007-04-10
Publisher
IEEE
http://dx.doi.org/10.1109/CHINACOM.2006.344911
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