Wavelet modulation: An alternative modulation with low energy consumption

Publication date: February 2017 Source:Comptes Rendus Physique, Volume 18, Issue 2 Author(s): Marwa Chafii, Jacques Palicot, Rémi Gribonval This paper presents wavelet modulation, based on the discrete wavelet transform, as an alternative modulation with low energy consumption. The transmitted signal has low envelope variations, which induces a good efficiency for the power amplifier. Wavelet modulation is analyzed and compared for different wavelet families with orthogonal frequency division multiplexing (OFDM) in terms of peak-to-average power ratio (PAPR), power spectral density (PSD) properties, and the impact of the power amplifier on the spectral regrowth. The performance in terms of bit error rate and complexity of implementation are also evaluated, and several trade-offs are characterized.

Source: Comptes Rendus Physique - January 19, 2017 Category: Physics Source Type: research