Title :
Constant Envelope OFDM in Multipath Rayleigh Fading Channels
Author :
Thompson, Steve C. ; Proakis, John G. ; Zeidler, James R. ; Geile, Michael
Author_Institution :
California Univ., San Diego, La Jolla, CA
Abstract :
In this paper we consider the problem of equalizing constant envelope orthogonal frequency division multiplexing (CE-OFDM) signals that have been corrupted by frequency-selective multipath fading channels. A cyclic prefix guard interval is used to avoid interblock interference (IBI), and to make possible frequency-domain equalization (FDE) using the discrete Fourier transforms. It is shown that CE-OFDM exploits the multipath diversity of the channel due to frequency spreading of the data symbols. CE-OFDM compares favorably with conventional OFDM when the impact of nonlinear power amplification and power backoff is taken into account
Keywords :
OFDM modulation; Rayleigh channels; discrete Fourier transforms; frequency-domain analysis; interference suppression; multipath channels; FDE; IBI avoidance; Rayleigh channel; constant envelope OFDM; cyclic prefix guard interval; discrete Fourier transform; frequency-domain equalization; frequency-selective multipath fading channel; interblock interference; orthogonal frequency division multiplexing; Bit error rate; Discrete Fourier transforms; Diversity reception; Equalizers; Fading; Frequency diversity; Interference; Modulation; OFDM; Peak to average power ratio;
Conference_Titel :
Military Communications Conference, 2006. MILCOM 2006. IEEE
Conference_Location :
Washington, DC
Print_ISBN :
1-4244-0617-X
Electronic_ISBN :
1-4244-0618-8
DOI :
10.1109/MILCOM.2006.302187
