Frame Synchronization Exploiting Cauchy Distribution in DMT-Based xDSL Modems(Transmission Systems and Transmission Equipment for Communications)
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概要
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This letter considers frame synchronization in nonsynchronized sampling discrete multi-tone (DMT) based asymmetric digital subscriber line (ADSL)/very high speed DSL (VDSL) systems in the presence of timing error. We propose a frame synchronization method which is based on the observation that the normalized correlation between two sequences separated by the FFT length is Cauchy random variable. The proposed approach uses less number of correlators, reducing computational complexity as well as demodulation delay than a previous approach [1]. Therefore, ADSL/VDSL modems can be more power efficient and computationally less complex via the proposed frame synchronization method. Simulation results demonstrate the effectiveness of the proposed approach, comparing with the previous approach.
- 2005-04-01
著者
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KIM Youngok
Department of ECE, University of Texas at Austin
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KIM Jaekwon
Samsung Advanced Institute of Technology
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KANG Joonhyuk
School of Engineering, Information and Communications University
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WOMACK Baxter
Department of ECE, University of Texas at Austin
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KIM Jaekwon
Yonsei Univ.
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Kang Joonhyuk
School Of Engineering Information And Communications University
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Kang Joonhyuk
School Of Engineering At Information And Communications University
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Kim Youngok
Department Of Ece University Of Texas At Austin
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Womack Baxter
Department Of Ece University Of Texas At Austin
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Kang Joonhyuk
School Of Engineering Korea Advanced Institute Of Science And Technology (kaist)
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