Low Complexity Adaptive Blind Equalization Using the Frequency Domain Block Constant Modulus Algorithm
Yoon Gi Yang, Sang Uk Lee · 1999
Introduction In digitaltrans1=P#'1 sans1= adaptiveequalizers are widelyuse to compens15 for intersj bol interference (ISI). The adaptive equalizeris usaliz trainedusin training saining [1]. Though the training saining is esi tial for es4'PB136 the channeldisl164'4k there exis sapplications in whichcas it cannot beus# [1], or itis not allowable [1]. Thus blind adaptive equalizers which do not require training saining1 have been sen16= forthes applications [1], [2]. Among the blind equalization algorithms the CMA(consj# t modulus algorithm), prop osp by Godard [1],has received conson -16=k attention. Recently,s5 eral HDTV prop ssp16'B the us of the CMA for the HDTV digital transl16=kP sans [3]. Though the CMArequires les computational complexity than the algorithms baso on higher order sder16=kP# its computational complexity is s6kk high for the applications of highs eedtranskk135B srans s h as HDTV, sV,1 long length filteris generally required. For example, [4] prop osp a 25