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Performance Evaluation of a Time- and Frequency-Domain Clipping-Based PAPR Reduction Scheme in a DVB-T System  

Seo, Man-Jung (School of Electronic Engineering, Soongsil University)
Im, Sung-Bin (School of Electronic Engineering, Soongsil University)
Kim, Na-Hoon (HUTECH21 Co., Ltd.)
Cho, Jun-Kyung (HUTECH21 Co., Ltd.)
Publication Information
Journal of the Institute of Electronics Engineers of Korea TC / v.44, no.1, 2007 , pp. 24-31 More about this Journal
Abstract
DVB-T (Digital Video Broadcasting-Terrestrial) is an important multimedia broadcasting technology capable of high data-rate transmission and adopted by Europe. OFDM (Orthogonal Frequency Division Multiplexing) is the backbone technique employed in DVB-T to support multimedia services that have various bandwidths. Unfortunately, an OFDM signal has a large PAPR (Peak-to-Average Power Ratio). In this paper, we investigate the performance of a simple PAPR reduction scheme for the DVB-T system, which requires no change of a receiver structure or no additional information transmission. The approach we employed is clipping in the time and frequency domains. The time-domain clipping is carried out with a predetermined clipping level while the frequency-domain clipping is done within EVM (Error Vector Magnitude). This approach is suboptimal with lower computational complexity compared to the optimal method. The simulation results demonstrate that the proposed one is getting more effective at lower modulation levels and with more allowed constellation error.
Keywords
DVB-T; OFDM; PAPR; CLIPPING;
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