DocumentCode :
1062287
Title :
Performance of Fractioned and Nonfractioned Equalizers with High-Level QAM
Author :
Agusti, R. ; Casadevall, Fernando ; Olmos, Juan J.
Author_Institution :
Escuela Técnica Superior de Ingenioros de Telecomunicación, Barcelona, Spain
Volume :
5
Issue :
3
fYear :
1987
fDate :
4/1/1987 12:00:00 AM
Firstpage :
476
Lastpage :
483
Abstract :
This paper presents a comparative study of 16-QAM, 32QAM, 64-QAM, and 128-QAM 140 Mbit/s digital radio in the presence of multipath fading. Conventional 
-spaced and fractional tapspaced equalizers have been considered to compensate for the ISI-induced symbols. The performance measure used is the bit error ratio (BER); thus, upper and lower bounds on BER have been developed. Based on this calculation procedure, results showing the net fade margin versus the gross fade margin have been obtained in a variety of cases that include the presence of both nonlinear and linear equalizer structures.
-spaced and fractional tapspaced equalizers have been considered to compensate for the ISI-induced symbols. The performance measure used is the bit error ratio (BER); thus, upper and lower bounds on BER have been developed. Based on this calculation procedure, results showing the net fade margin versus the gross fade margin have been obtained in a variety of cases that include the presence of both nonlinear and linear equalizer structures.Keywords :
Adaptive equalizers; Multipath channels; Quadrature amplitude modulation; Baseband; Bit error rate; Digital communication; Equalizers; Fading; Filtering; Helium; Quadrature amplitude modulation; Random variables; Shape control;
fLanguage :
English
Journal_Title :
Selected Areas in Communications, IEEE Journal on
Publisher :
ieee
ISSN :
0733-8716
Type :
jour
DOI :
10.1109/JSAC.1987.1146566
Filename :
1146566
Link To Document :
