PROMOTING ACCESS TO AFRICAN RESEARCH

University of Mauritius Research Journal

Log in or Register to get access to full text downloads.

Remember me or Register



Adaptive Combined Source and Channel Decoding with Modulation for Rayleigh Fading Channels

B Rajkumarsingh, KMS Soyjaudah

Abstract


In this paper, an adaptive system employing combined source and channel decoding with modulation is  proposed for slow Rayleigh fading channels. Huffman code is used as the source code and Convolutional code is  used for error control. The adaptive scheme employs a family of Convolutional codes of different rates and  Multiple Phase Shift Keying (MPSK) modulation schemes according to the states of the channel. It also uses a channel estimator to select the most appropriate codulation scheme. Simulation results show that the adaptive scheme gives significant improvement in the BER and throughput performance as compared to fixed error codes.



AJOL African Journals Online