Results 21 to 30 of about 40,526 (211)
Suppression of co-channel interference in NGSO constellation system with interference alignment
Tongxin xuebao, 2021 Aiming at the problem that in the current space， non-geostationary satellite orbit （NGSO） constellation systems were increasing day by day， there are more and more satellite networks nearby orbiting using the same frequency band， and the problem of co ...
Bing DU +5 more
doaj +2 more sources
Pseudo channel reciprocity in FDD satellite channels
, 2023 Channel reciprocity can significantly reduce the overhead of obtaining channel-state information at the transmitter (CSIT). However, true reciprocity only exists in time division duplex (TDD). In this paper, we propose a novel tracking method that exploits implicit reciprocity in FDD line-of-sight (LOS) channels as in low-earth-orbit (LEO) satellite ...
Richter, Rei +3 more
openaire +2 more sources
Physical layer DVB-SH performance prediction based on mutual information [PDF]
, 2012 Digital Video Broadcasting-Satellite Handled (DVB-SH) is a hybrid satellite terrestrial broadcasting standard dedicated to provide video or audio services for handheld terminals.
Chauvet, Wilfried +9 more
core +1 more source
, 2011 This paper investigates the theoretically reachable rates in the return-link of multi-user multi-beam satellite systems. The return-link can actually be analyzed by means of multiple-input multiple-output signal processing techniques. While MIMO inspired
Michael Joham +7 more
core +1 more source
E-SSA Satellite Messaging Return Channel: Performance Analysis and Field Trials Results
, 2012 An open ITS platform combining interactive satellite services with other communication channels is being developed and evaluated in field trials within the SafeTRIP project [1]. Prototyping and in-field validation of a novel waveform for messaging return
M. Andrenacci +17 more
core +1 more source
Prediction of performance of the DVB-SH system relying on mutual information [PDF]
, 2010 DVB-SH (Digital Video Broadcasting-Satellite Handled) is a broadcasting standard dedicated to hybrid broadcasting systems combining a satellite and a terrestrial part. On the satellite part, dedicated interleaving and time slicing mechanisms are proposed
Chauvet, Wilfried +5 more
core +1 more source
OFDM receiver for fixed satellite channel
Journal of Communications and Networks, 2010 This paper proposes an orthogonal frequency division multiplexing (OFDM) waveform for the forward link of a fixed broadband satellite system. We focus on the synchronization tasks in the receiver. Our objective is to minimize the required overhead, in order to improve the spectral efficiency with regard to a single carrier waveform system.
Nathalie Thomas +4 more
openaire +1 more source
Study on an effective integrated model of Ka-band mobile satellite channel
Tongxin xuebao, 2012 In order to describe the Ka-band mobile satellite communications channel fading features more realitically,a mobile satellite integrated channel model was proposed.The characteristics of the mobile satellite propogation channel were analysed in detail ...
Juan WEI, Da LIU, Gang-qi TIAN
doaj +2 more sources
Performance Evaluation of High-Frequency Mobile Satellite Communications
IEEE Access, 2019 Communication satellites have a much longer propagation delay than terrestrial communication networks such as cellular or WiFi. In addition, as the carrier frequency moves up, mobile satellite communications show worse performances than the conventional ...
Yonghwa Lee, Jihwan P. Choi
doaj +1 more source
A cross-layer approach to enhance QoS for multimedia applications over satellite [PDF]
, 2009 The need for on-demand QoS support for communications over satellite is of primary importance for distributed multimedia applications. This is particularly true for the return link which is often a bottleneck due to the large set of end-users accessing a
Exposito, Ernesto +4 more
core +1 more source