Abstract
Abstract In this paper, we propose an efficient OFDM(Orthogonal Frequency Division Multiplexing) frame synchronization scheme for LED- ID(Identification) systems. A frame synchronization is an essential procedure for normal operations of OFDM systems. Bernoulli-Gau-ssian noise is considered in LED-ID systems' environments. In order to enhance the OFDM frame synchronization performance, we add a ROGS(Repeated Orthogonal Gold Sequence) to OFDM signals in the time domain. The power level of a ROGS does not affect a normal operation of the LED-ID systems. Frame synchronization can be achieved successfully over LED-ID channels interfered by impulsive noise owing to good auto and cross-correlation properties of the ROGS.Key words: LED-ID, OFDM, Synchronization, ROGS, m-Sequence \]^MKE/KEIT IT RD Revised January 10, 2014 ; Accepted January 15, 2014. (ID No. 20131210-124)Corresponding Author: Jin-Young Kim (e-mail: jinyoung@kw.ac.kr)
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