earticle

영어

In this paper, we derive an accurate and concise closed-form approximation of bit error rate (BER) for coherent amplify-and-forward (AF) cooperative relay system employing binary phase shift keying (BPSK), especially in Nakagami-m fading Channels. By exploiting the derived closed-form formula, we can easily verify the error rate performance for various system configurations and fading environments without time-consuming computer simulation. Extensive numerical results are provided to validate our theoretical analysis, where it is obviously demonstrated that the average BER versus signal-to-noise ratio (SNR) curves obtained from the derived closed-form expression are very close to those from the existing integral-form expression.