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A Study of Implementation of Analog Slope Equalizer and Its System Performance for Digital Radio Relay System  

서경환 (강남대학교 전자공학과)
Publication Information
The Journal of Korean Institute of Electromagnetic Engineering and Science / v.15, no.11, 2004 , pp. 1034-1042 More about this Journal
Abstract
In this paper, as one of countermeasure techniques for a frequency selective fading, an adaptive analog slope equalizer(ASE) applicable to 64-QAM digital radio relay system is presented in terms of principle, implementation, and its performance. Also interference of cross-talk between I- and Q-channel caused by a fiequency selective lading has been analyzed by doing channel model in the baseband, which make it possible to derive the solution for implementing ASE in If-band. The effects of signal for the faded channel are investigated in the time and the frequency domains, respectively, with/without ASE. As system performance, it is shown that the signature is improved up to 6.2 dB at the edge of signal bandwidth for a given BER 10$\^$-3/.
Keywords
Digital Radio Relay System; Slope Equalizer; Signature; Frequency Selective Fading; Constellation;
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