From quantum physics to digital communication: Single sideband continuous phase modulation
Haïfa Farès, D. C. Glattli, Yves Louët, Jacques Palicot, Christophe Moy, P. Roulleau · Comptes Rendus Physique · 2018
In the present paper, we propose a new frequency-shift keying continuous phase modulation (FSK–CPM) scheme having, by essence, the interesting feature of single-sideband (SSB) spectrum providing a very compact frequency occupation. First, the original principle, inspired from quantum physics (levitons), is presented. Besides, we address the problem of low-complexity coherent detection of this new waveform, based on orthonormal wave functions used to perform matched filtering for efficient demodulation. Consequently, this shows that the proposed modulation can operate using existing digital communication technology, since only well-known operations are performed (e.g., filtering, integration). This SSB property can be exploited to allow large bit rates transmissions at low carrier frequency without caring about image frequency degradation effects typical of ordinary double-sideband signals.