Performance analysis of MQAM digital mobile communication systems in the presence of frequency-selective Rayleigh fading and CCI

摘要

Based on the characteristic function and discrete Fourier transform (DFT) method, the error probability of an MQAM mobile communication system in the presence of frequency-selective Rayleigh fading, co-channel interference (CCI) and Doppler frequency spread is derived. This proposed approach provides an accuracy equivalent to the Monte-Carlo simulation technique with much lower computational complexity and time. Numerical results for an illustrative example of a 16 QAM system are given. The effects of Doppler spread, CCI and frequency-selective fading on the system performance are examined.