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PAPR Reduction of Multicarrier Faster-Than-Nyquist Signals With Partial Transmit Sequence
IEEE Access, 2017 Multicarrier faster-than-Nyquist (MFTN) signaling is a spectral efficient transmission scheme for future communication systems. Similar as general multicarrier signals, the high peak-to-average power ratio (PAPR) is also one of the main drawbacks of MFTN
Siming Peng +3 more
doaj +1 more source
Hexagonal Multicarrier Faster-Than-Nyquist Signaling
IEEE Access, 2017 Multicarrier faster-than-Nyquist (MFTN) signaling is a spectral efficient modulation scheme for future communication systems. In MFTN signaling, the intersymbol interference (ISI) and intercarrier interference (ICI) are introduced intentionally by the ...
Siming Peng +3 more
doaj +1 more source
A new low profile antenna with improved performance for satellite on-the-move communications [PDF]
, 2009 A novel design solution for a low-profile fullduplex Satellite-On-The-Move Communications hybrid scanned phased array antenna for low elevation angle coverage (down to 10°) is described. The antenna is operated at Ku-Band.
Yuanyuan Jiang +7 more
core +1 more source
IEEE Access, 2018 High peak-to-average power ratio (PAPR) is one of the common drawbacks of multicarrier signals at the transmitter. In this paper, we investigate the PAPR reduction of spectral efficient multicarrier faster-than-Nyquist (MFTN) signals, where the PAPR ...
Siming Peng +4 more
doaj +1 more source
A Parallel Decoding Algorithm for Short Polar Codes Based on Error Checking and Correcting
The Scientific World Journal, 2014 We propose a parallel decoding algorithm based on error checking and correcting to improve the performance of the short polar codes. In order to enhance the error-correcting capacity of the decoding algorithm, we first derive the error-checking equations
Yingxian Zhang +4 more
doaj +1 more source
Gap Analysis in Satellite Communication Services [PDF]
فصلنامه علوم و فناوری فضایی, 2023 The national information network is being implemented with the aim of providing the services needed by the people through internal infrastructure and independent of international internet platforms.
Leila Mohammadi +3 more
doaj +1 more source
Investigating the Test and Evaluation of GaN Transistors Radiation Resistance in SSPA Amplifier Board in LEO Satellite Payload [PDF]
فصلنامه علوم و فناوری فضایی, 2023 With the advent of GaN technology, achieving microwave power with high efficiency by solid-state devices has become more available. Therefore, the use of SSPA amplifiers with GaN technology in satellites, especially LEO satellites, has been considered ...
Roghieh Karimzadeh Baee +3 more
doaj +1 more source
PhotonicsBroadcast-style downlinks (e.g., PONs and satellites) expose physical waveforms despite transport-layer cryptography, motivating physical-layer encryption (PLE).
Chao Yu +13 more
doaj +1 more source
On the role of satellite communications for emergency situations with a focus on Europe
, 2011 International audienceIn this paper, we describe how satellite communications may contribute to disaster management. During emergency situations, satellite communications present many advantages in supporting or replacing a terrestrial infrastructure (if
Matteo Berioli +14 more
core +1 more source
Adaptive beamforming for large arrays in satellite communications systems with dispersed coverage [PDF]
, 2011 Conventional multibeam satellite communications systems ensure coverage of wide areas through multiple fixed beams where all users inside a beam share the same bandwidth. We consider a new and more flexible system where each user is assigned his own beam,
Larue de Tournemine, Cécile +5 more
core +1 more source