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http://dx.doi.org/10.5515/KJKIEES.2007.18.1.053

Peak-to-Average Power Ratio Reduction Technique Superimposing the Rotation Phases over Pilot and Data Symbols  

Han, Tae-Young (Department of Computer and Communication Engineering, Chungbuk National University)
Choi, Jung-Hun (Department of Computer and Communication Engineering, Chungbuk National University)
Kim, Nam (Department of Computer and Communication Engineering, Chungbuk National University)
Publication Information
The Journal of Korean Institute of Electromagnetic Engineering and Science / v.18, no.1, 2007 , pp. 53-61 More about this Journal
Abstract
This paper researches on the scheme superimposing the rotation phases over the pilot and data symbols in order to reduce the peak-to-average power ratio(PAPR) of the orthogonal frequency division multiplexing(OFDM) communication. The bandwidth and power efficiency are the main consideration. The phases of rotation vector are added to those of both pilot symbols and data symbols interlaying between any two pilot symbols in an OFDM block. Owing to this scheme the transmitter reduces the PAPR using the partial transmit sequences(PTS) and the receiver restores the data symbol utilizing the channel estimation of pilot symbols. Therefore, the bandwidth efficiency is accomplished by not using the further subcarriers for the reduction of PAPR and the enormous increase of bit error rate according to the receiving error of the side information, i.e. the phases of rotation vector, is prevented. In other words, both bandwidth-and power-efficiency and quality of communication performance can be improved.
Keywords
OFDM; PAPR; Channel Estimation;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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