Abstract:

This paper makes an analysis of the features of the Orthogonal Frequency Division Multiplexing-Continuous Phase Modulation(OFDM-CPM) communication system.A scheme of modulation and demodulation that can be readily implemented in engineering is designed.In the multi-path with white Gaussian noise channel,a comparison in bit error rate(BER) characteristics is made between OFDM-CPM system and OFDM-QPSK system.The impact of modulation index on the OFDM-CPM system BER is studied,and the OFDM-CPM system BER can be decreased using convolutional codes.

Key words: OFDM;CPM;BER;multipath channel;VITERBI