OFDM frame synchronization based on energy difference of the received preamble

doi:1005-8885 (2007) 01-0096-04

Acta Metallurgica Sinica(English letters) ›› 2007, Vol. 14 ›› Issue (1): 96-99.doi: 1005-8885 (2007) 01-0096-04

• Wireless • Previous Articles Next Articles

OFDM frame synchronization based on energy difference of the received preamble

JIANG Feng, SONG Mei, GUO Da, SONG Jun-de

CAD and PCN Center, Electronic Engineering Institute, Beijing University of Posts and Telecommunications, Beijing 100876, China

Received:2006-05-08 Revised:1900-01-01 Online:2007-03-30
Contact: JIANG Feng

Abstract

Abstract:

The article presents a novel orthogonal frequency division multiplexing (OFDM) frame synchronization method. The method uses the preamble that contains two identical halves, and the energy difference of the two similar parts of the received preamble in receiver is used to obtain the frame’s correct starting point. Furthermore, an improvement of the proposed method is presented, which uses the preamble that can be divided into four similar portions, and the energy difference of the four similar parts of the received preamble in receiver is used to obtain the frame’s correct starting point. The performances of the frame synchronization methods in multipath channel are compared in terms of mean square error (MSE) obtained by simulations. It can be seen from the simulation results that the proposed methods have better performances than Schmidl’s, Minn’s, and Park’s method in multipath channel.

Key words:

orthogonal frequency division multiplexing (OFDM) timing offset;frame synchronization

CLC Number:

TN929.05

JIANG Feng, SONG Mei, GUO Da, SONG Jun-de. OFDM frame synchronization based on energy difference of the received preamble[J]. Acta Metallurgica Sinica(English letters), 2007, 14(1): 96-99.

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OFDM frame synchronization based on energy difference of the received preamble

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