The Research and Simulation of the GMSK Modulation System Based on Hamming Encoding

Through studying the performance of the GMSK modulation in different BT value, the causes is presented that effect the bit-error rate of the GMSK modulation system in different BT value. Without altering the system bandwidth, the encoding is introduced which would correct the error code to the GMSK modulation system to lower the BER and improving the reliability of the system. In this paper, the model of the GMSK modulation system based on the hamming encoding is proposed. The result of simulation indicates that the GMSK modulation system which adopts the hamming and difference encoding improves the performance of the GMSK modulation system.