Abstract
Orthogonal frequency division multiplexing (OFDM) modulations are very popular in wireless communications due to their flexibility and good performance over severely time-dispersive channels. However, OFDM signals have large peak-to-average power ratio (PAPR), which leads to amplification problems. Constant envelope OFDM (CE-OFDM) techniques use an OFDM signal to modulate the phase of a given carrier, allowing a 0 dB PAPR, with all inherent advantages. However, the phase modulator is a nonlinear device that can lead to performance degradation. In this paper, we take advantage of the Gaussian characteristics of OFDM signals to characterize analytically CE-OFDM signals, both in terms of power spectral density (PSD) and optimum asymptotic performance.
Original language | English |
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Title of host publication | 2015 IEEE 82nd Vehicular Technology Conference, VTC Fall 2015 - Proceedings |
Publisher | Institute of Electrical and Electronics Engineers (IEEE) |
ISBN (Electronic) | 978-1-4799-8091-8 |
DOIs | |
Publication status | Published - 25 Jan 2016 |
Event | 82nd IEEE Vehicular Technology Conference, VTC Fall 2015 - Boston, United States Duration: 6 Sept 2015 → 9 Sept 2015 |
Conference
Conference | 82nd IEEE Vehicular Technology Conference, VTC Fall 2015 |
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Country/Territory | United States |
City | Boston |
Period | 6/09/15 → 9/09/15 |
Keywords
- Envelope fluctuations
- Gaussian signals
- Nonlinear effects
- OFDM