Improving Quadrature Amplitude Modulation (16QAM) Performance in Wide band Code Division Multiple Access using Convolutional Coding
Simbarashe Magidi · 2015
The performance of 16 QAM modulation techniques has been analyzed and improved for Wide band Code Division Multiple Access (WCDMA) applications at variable data rate. Matlab and Simulink have been used in the evaluation and the BER with and without coding has been compared as the data rate was increased from 64 kbps to 2MBps. It has been concluded that when convolutional coding was applied, the BER has could be improved by 0.54 % at 64 kbps, 0.39 % at 144 kbps, 0.78 % at 384 kbps and 0.53% at 2 MBps, all this being compared to a communication system without coding. Thus we can enhance the performance of a 16 QAM modulations by convolutional coding.