Effect of impulsive noise on decode-and-forward cooperative relaying over fading channel

In this paper, the exact symbol error probability expression for a decode-and-forward cooperative relaying scheme using quadrature amplitude modulation (QAM) in the presence of Rayleigh fading and Bernoulli-Gaussian impulsive noise is derived. Different from [1], we only consider the practical receiver structure at the destination without requiring any knowledge of impulsive noise. Also, the source retransmission when the relay fails to detect the source signal is discussed. Analytical results show that cooperative relaying in impulsive noise environment still achieves space diversity and better performance than direct transmission under same bandwidth efficiency and power consumption for any impulse power and impulse rate. However, the source retransmission-assisted cooperative relaying brings negligible improvement.

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