Title :
An Adaptive IIR Pre-Equalizer for Terrestrial DTV Transmitters
Author :
Kim, Hyoung-Nam ; Kim, Wan-Jin ; Lee, You-Seok ; Seo, Jae Hyun ; Park, Sung Ik ; Kim, Suk Chan
Author_Institution :
Dept. of Electron. Eng., Pusan Nat. Univ.
fDate :
3/1/2007 12:00:00 AM
Abstract :
A novel pre-equalization method for terrestrial DTV transmitters is presented. A pre-equalizer is 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. The pole-zero modeling property of IIR filters improves the signal-to-noise ratio by compensating for various 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 :
IIR filters; adaptive equalisers; adaptive filters; channel bank filters; digital television; mean square error methods; television transmitters; adaptive IIR preequalizer; amplitude distortion; channel filter; delay; equation-error scheme; infinite impulse response filtering; linear distortion; pole-zero modeling property; residual mean-square error; terrestrial DTV transmitter; Adaptive filters; Delay; Digital TV; Distortion; Equations; Filtering; Finite impulse response filter; IIR filters; Signal to noise ratio; Transmitters; Channel filter; DTV; IIR; pre-equalizer; transmitter;
Journal_Title :
Broadcasting, IEEE Transactions on
DOI :
10.1109/TBC.2006.885874
