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An Adaptive IIR Pre-equalizer for Terrestrial DTV Transmitters  

Kim Hyoung-Nam (부산대학교 전자공학과 통신 및 신호처리 연구실)
Kim Wan-Jin (부산대학교 전자공학과 통신 및 신호처리 연구실)
Kwon Dae-Ken (부산대학교 전자공학과 통신 및 신호처리 연구실)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.31, no.3A, 2006 , pp. 328-336 More about this Journal
Abstract
A novel pre-equalization method for terrestrial DTV transmitters is presented. A pre-equalizer has been used in transmitters to correct group delay and amplitude distortions caused by a channel filter. In the proposed pre-equalizer, an equation-error adaptive IIR filtering scheme is adopted unlike the conventional pre-equalization using FIR filtering schemes. The pole-zero modelling property of IIR filters improves the signal-to-noise ratio and may deal with diverse linear distortions existing in DTV transmitters as well as the channel filter distortion. Simulation results show that the proposed IIR pre-equalizer performs better than the FIR pre-equalizer in terms of the residual mean-square error.
Keywords
Channel filter; DTV; IIR; pre-equalizer; transmitter;
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