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Side Information Transmission using Reference Symbol in PTS Scheme  

유흥균 (충북대학교 전자공학과 및 컴퓨터정보통신연구소)
박종현 (충북대학교 전자공학과 및 컴퓨터정보통신연구)
박진수 (청주대학교 정보통신공학부 및 정보통신연구센터)
Publication Information
The Journal of Korean Institute of Electromagnetic Engineering and Science / v.15, no.4, 2004 , pp. 414-420 More about this Journal
Abstract
Partial transmit sequence(PTS) scheme has been widely studied to reduce the peak-to-average power ratio(PAPR) of Orthogonal frequency-division multiplexing(OFDM) signal since it is flexible ad any spectral regrowth is not made. A necessity of the PTS scheme is to transmit the side information about the phase rotation factors for correct OFDM symbol recovery. In this paper, a new side information embedded PTS scheme using the reference symbols is proposed fur the PAPR reduction and the BER(bit error rate) performance is analyzed when the erroneous side information is received. In this proposed method, the information about the rotation factors is expressed by the phase of reference symbols. The proposed method maintains the same PAPR reduction performance as the conventional PTS scheme and OFDM symbols are correctly recovered by the side information to meet the required BER level, which is verified via the computer simulation. Also, it is shown that the proposed method can be easily realized and can be used for all kinds of digital modulation formats in the OFDM communication system.
Keywords
OFDM; PAPR; PTS; Side Information and Reference Symbol;
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