Research Methods ICRAMET 2014 Proceedings

Electronics and Telecommunications ICRAMET 2014 Batam – Indonesia | 7 – 8 May 2014 ICRAMET 119 Pembangkitan bit acak Mapping + + + + Detektor Demapping AWGN Rayleigh Fading AWGN Rayleigh Fading BER Figure 5. Diagram of BER Calculation Using Monte Carlo Simulation . III. RESULTS AND ANALYSIS A. Testing BER Bit Error Rate Performance 1. BPSK Modulation The graph in the figure below shows the ratio of BPSK modulation when it is passed only through the course AWGN channel, rayleigh fading channel alone and the combination of both channels. For BPSK modulation are passed through AWGN channel and rayleigh fading BER values are joined its worst among the two other tests. Figure 6. BER in BPSK modulation 2. Modulasi QPSK The picture below shows a comparison of chart testing QPSK modulation when passed only through the AWGN channel only, rayleigh fading channel alone and the combination of both channels. For QPSK modulation BER values are passed through AWGN channel and rayleigh fading is incorporated worst among the two earlier tests in this test because its BER value at least as impaired as the SNR value addition. Figure 7. BER at QPSK modulation

B. Performance Comparison of BPSK and QPSK

modulation system 1. Modulation BPSK and QPSK AWGN channel passes From the graph BER test results on BPSK and QPSK modulation that are passed through AWGN channel in the picture below, shows that the value of the BER on QPSK and BPSK modulation is affected by the increasing value of the SNR where the SNR value will decrease the value of BER. Graph BPSK modulation over AWGN channel is under QPSK modulation of the graph through the AWGN channel, it indicates that the BPSK modulation BER on AWGN channel passing has better performance than the BER on QPSK modulation which is passed through an AWGN channel. Figure 8. BER of BPSK and QPSK modulation over rayleigh fading channels 2. Modulation BPSK and QPSK pass Rayleigh Fading channel From the graph BER test results on BPSK and QPSK modulation are passed through rayleigh fading channel in the picture below shows that the value of the BER on QPSK and BPSK modulation is affected by the increasing value of the SNR where the SNR value will decrease the value of BER. Graph BPSK modulation through rayleigh fading channel is under the QPSK modulation of the graph through rayleigh fading channel, it indicates that modulation BER