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PAPR Reduction and BER Analysis of the OFDM System Using the TR and DCT Transform  

Byeon, Heui-Seop (Dept. of Electronic Engineering and Research Institute of Computer, Information & Communication, Chungbuk National University)
Shinn, Byung-Cheol (Dept. of Electronic Engineering and Research Institute of Computer, Information & Communication, Chungbuk National University)
Ahn, Do-Seob (Broadband Wireless Transmission Research Team, Digital Broadcasting Research Division, ETRI)
Publication Information
The Journal of Korean Institute of Electromagnetic Engineering and Science / v.17, no.10, 2006 , pp. 976-984 More about this Journal
Abstract
OFDM system is very useful for the high speed communication system. However, OFDM system has a serious problem of high PAPR that results from the so many subcarriers in the same phase. This OFDM signal is distorted through the nonlinear HPA(High Power Amplifier). Tone reservation method is to insert tone signal in several types to reduce the PAPR after iterating this process by changing the tone signal. Also discrete cosine transform(DCT) can reduces the PAPR as multiplying the cosine value to change the angle and mix up with the data. In the paper, the combination of the TR method and DCT method is newly proposed for more effective reduction of the PAPR. Simulation results show that the proposed method outperforms the conventional simple TR method and DCT method with respect to the PAPR reduction and BER performance.
Keywords
OFDM; Tone Reservation; DCT; PAPR; BER;
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