Title :
Performance of 64-QAM, 225-QPRS and 256-QAM in a cochannel interference environment
Author :
Wu, K.-T. ; Feher, K.
Author_Institution :
University of Ottawa, Digital Communications Group, Department of Electrical Engineering, Ottawa, Canada
fDate :
10/1/1986 12:00:00 AM
Abstract :
The performance of 64-QAM (quadrature amplitude modulation), 225-QPRS (quadrature partial-response signalling) and 256-QAM in the presence of cochannel interference (CCI) and thermal noise is evaluated. It is found that the amplitude-modulated CCI causes more degradation than the single sinusoidal CCI. Measured data of a 256-QAM modem in a CCI environment show good agreement with the simulated results.
Keywords :
amplitude modulation; digital communication systems; interference (signal); signalling (telecommunication networks); 225-QPRS; 256-QAM; 64-QAM; cochannel interference; digital communication systems; quadrature amplitude modulation; quadrature partial-response signalling;
Journal_Title :
Communications, Radar and Signal Processing, IEE Proceedings F
DOI :
10.1049/ip-f-1.1986.0092
