Optimization design of C2PM with short frame and its implementation

Serially coded and interleaved continuous phase modulation (C²PM) with iterative demodulation and decoding is investigated for burst communication. The optimization and simplified decoding for C²PM system with short frame are discussed, including simplified demodulator and matched interleaver. Simulation results show that for coded GMSK system under AWGN, the performance is better than individual convolutional code. Especially when BER is 1×10⁻⁵, it performs better than Turbo code and LDPC code with the same frame length, and there is no error floor occurring. Complexity analysis shows that the coded GMSK system has lower implementation complexity in comparison with Turbo and LDPC code. Moreover, efficient hardware implementation based on Xilinx Vertex-4 FPGA platform is presented. The practical performances prove that this system is suitable for burst communication.