Performance of coded partial response M-level digitally phase modulated (DPM) signals in a frequency selective Rayleigh fading channel

The search for improving the power efficiency of partial response digitally phase modulated (DPM) signals is addressed. The best combinations, resulting from our previous study, of a rate 1/2 convolutional encoder, mapping rule and 4-level partial response 3-SP DPM modulator are found and presented for each modulation index and memory length. It was shown that coded schemes which provide greater power-bandwidth efficiencies then uncoded ones can be achieved for AWGN channels. To examine the schemes under a frequency selective Rayleigh fading (FSRF) channel, a receiver structure is proposed and presented. The BER performance of these schemes are presented