BER Performance Comparison between QPSK and 4-QA Modulation Schemes
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چکیده
The performance of QPSK and QAM system that are used to encode the data stream in wireless communications. In order to choose the most suitable modulation, several criteria such as power efficiency, bandwidth efficiency, and bit error rate are used for evaluation. This paper focuses on error performance of phase modulation and amplitude modulation schemes on the method to reduce bit error rates with the help of convolutional coding which is extensively used in GSM cellular system’s encoder. AWGN channel has been reported here. To find out the best BER performance between QPSK and AQM we use SIMULINK software.
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تاریخ انتشار 2013