Abstract

In this paper, a performance analysis of Bit Error Probability (BER) for Device-to-Device (D2D) Amplify-and-Forward (AF) cooperative relaying is shown for various modulation schemes such as Binary Phase-Shift Keying (BPSK), Quadrature Phase-Shift Keying (QPSK) and M-ary Quadrature Amplitude Modulation (MQAM). The relay node assists the source node and enhances the destination link's reliability by employing AF cooperative technique. The destination node uses a Maximal Ratio Combiner (MRC), which combines the received signal from the source and the relay. The BER evaluation for the combined signal implies that the BPSK and QPSK have a lower bit error rate as 2.1X10-4 and 8.8X10-4 at SNR of 30 dB than the higher-order modulations.

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