Summary
|
For Full-Text PDF, please login, if you are a member of IEICE, or go to Pay Per View on menu list, if you are a nonmember of IEICE. |
|
Frame Synchronization Exploiting Cauchy Distribution in DMT-Based xDSL Modems Youngok KIM Jaekwon KIM Joonhyuk KANG Baxter F. WOMACK Publication IEICE TRANSACTIONS on Communications Vol.E88-B No.4 pp.1668-1671 Publication Date: 2005/04/01 Online ISSN: DOI: 10.1093/ietcom/e88-b.4.1668 Print ISSN: 0916-8516 Type of Manuscript: LETTER Category: Transmission Systems and Transmission Equipment for Communications Keyword: Cauchy distribution, sampling frequency offset, sampling phase offset, non-synchronized sampling, Full Text: PDF(201.1KB)>>
Summary: This letter considers frame synchronization in non-synchronized 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. 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. | |||||
|
