THE PERFORMANCE OF MULTI-ARY QAM SYSTEMS IN THE PRESENCE OF NON-GAUSSIAN IMPULSIVE NOISE

摘要

The performance of Multi-ary QAM (e.g.,16-,64-,and 256-QAM) systems in the presence of nonGaussian impulsive noise (Middleton's Class A noise) is analyzed.P(e) performance of the system is evaluated in terms of CNR,impulsive index (A) of the noise,and power ratio of the Gaussian noise-to- Impulsive noise (Γ').Our result shows that in the Multiary QAM,non-Gaussian impulsive noise degrades the system performance significantly even at high CNR.It is also found that an upper bound on the error probability exists for Γ'≤0.01.