Energy efficient CPM waveforms for satellite mesh networks

Abstract

This papers addresses the design of new energyefficient Continuous Phase Modulation (CPM) waveforms suitable for being adopted in satellite mesh networks that are characterized by the absence of the Hub, and by small antennas and power amplifiers with moderate to low output saturated power at the user terminal. In particular, a CPM modulation format concatenated with a proper convolutional code for low spectral efficiency values has been selected to implement an efficient waveform for power-limited scenarios. Performance results show the gain obtained with respect to the DVB-RCS2 CPM waveforms at higher spectral efficiency also when transmission techniques, such as Burst Repetition, are considered, and confirm the suitability of the new designed CPM waveforms for satellite hub-less scenarios.

Energy efficient continuous phase modulation signals for satellite intelligent transportation systems

“…The same criterion has been applied in the selection of the most suitable rate R CE = 1/5 code for application in power limited ad-hoc satellite www.ietdl.org systems with low SEs around 0.25, 0.5 and 0.8 b/s/Hz. We consider four state convolutional code with generators [7,7,7,5, 5] 8 . To obtain higher efficiency of coding, a puncturing system has been applied behind the encoder system.…”

“…In this paper, we analyse performance of ITS mesh satellite networks [3][4][5] based on the CPM signals. CPM signals have been earlier investigated in [6,7], in view of a potential application to satellite mesh networks. The results provided in [6] show how CPM signals can be applied in satellite mesh networks with low or medium spectral efficiencies (SEs).…”

On the error probability of Alamouti scheme with transmit antenna selection for CPM‐MIMO systems

“…The investigated system may give us new insights into some applications, e.g. wireless robots [28] and satellite mesh networks [29]. In future, we will focus on the receive AS in STC‐based CPM systems.…”

Continuous phase modulation for broadband satellite communications: design and trade‐offs

“…Finally, after the inclusion in the DVB-RCS2 specifications, the proposed CPM mode has been assessed for use in satellite mesh networks [20][21][22][23]. Although the proposed CPM scheme may require more complexity at the receiver side, the benefits deriving from the use of a nonlinear distortion resilient waveform in a mesh system with a large number of terminals, along with the rapid decreasing cost of baseband computational resources with respect to radio-frequency front-end, make CPM an attractive solution for the mesh scenarios as well as hub-spoke scenarios.…”