Constant Envelope OFDM With Channel Coding


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Date: January 2008
Type: White Paper
Rating: (0)

Overview: The major disadvantage of Orthogonal Frequency Division Multiplexing is the large peak to average power ratio. This research paper briefs a new constant envelope OFDM waveform. This is an application of convolutional coding to Constant Envelope Orthogonal Frequency Division Multiplexing. It studies the noise at the output of the phase demodulator is shown to be approximately Gaussian at high SNR and relatively low modulation indices. This allows the use of the conventional metric in the Viterbi decoding algorithm. A bound on the performance of convolutionally coded CE-OFDM is derived and is plotted along side the performance curves obtained through simulation.

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