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Performance of 64-QAM, 225-QPRS and 256-QAM in a cochannel interference environment

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2 Author(s)
Wu, K.-T. ; University of Ottawa, Digital Communications Group, Department of Electrical Engineering, Ottawa, Canada ; Feher, K.

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.

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Communications, Radar and Signal Processing, IEE Proceedings F  (Volume:133 ,  Issue: 6 )