Orthogonal frequency division multiplexing timing synchronization in multi-band orthogonal frequency division multiplexing ultra-wideband systems

Aymen M. Karim, Md. Shabiul Islam, Masuri Othman

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Problem statement: MB-OFDM UWB systems have attractive features and received a great attention. It has the capability of sending/receiving data at rates in access of 100 Mbits sec-1. Owing to the sensitivity of OFDM systems to synchronization errors, a fast synchronization algorithm is required to discern for the start of OFDM symbol. Existing approaches to OFDM time synchronization rely on their proposed preamble. Approach: In this study, a comprehensive algorithm for Orthogonal Frequency Division Multiplexing (OFDM) timing synchronization suitable for Multi- Band OFDM Ultra-Wideband (MB-OFDM UWB) systems was proposed. Firstly, we proposed a technique for packet detection in the multi-band scenario. Secondly, a new timing metric for timing synchronization is proposed. Then, we propose a technique for frame synchronization. Finally, time frequency code identification and low-complexity timing refinement technique was proposed. Results: The performance of the timing synchronization (coarse synchronization and timing refinement) is evaluated in terms of Mean Squared Error (MSE) in MB-OFDM UWB Channel Models (CM1, CM2, CM3 and CM4). It was found that the proposed method performs better than existing approaches. Conclusion: A suitable timing synchronization steps for MB-OFDM UWB systems was proposed. The proposed method can be applied on any preamble signal.

Original languageEnglish
Pages (from-to)420-427
Number of pages8
JournalAmerican Journal of Applied Sciences
Volume7
Issue number3
Publication statusPublished - 2010
Externally publishedYes

Fingerprint

Ultra-wideband (UWB)
Orthogonal frequency division multiplexing
Synchronization
Identification (control systems)

Keywords

  • Multi-band ofdm ultra-wide band systems
  • Time synchronization

ASJC Scopus subject areas

  • General

Cite this

Orthogonal frequency division multiplexing timing synchronization in multi-band orthogonal frequency division multiplexing ultra-wideband systems. / Karim, Aymen M.; Islam, Md. Shabiul; Othman, Masuri.

In: American Journal of Applied Sciences, Vol. 7, No. 3, 2010, p. 420-427.

Research output: Contribution to journalArticle

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