Results 31 to 40 of about 650,723 (318)
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
SMI Compatible Simulation Scheduler Design for Reuse of Model Complying with SMP Standard [PDF]
Journal of Astronomy and Space Sciences, 2010 Software reusability is one of key factors which impacts cost and schedule on a software development project. It is very crucial also in satellite simulator development since there are many commercial simulator models related to satellite and dynamics.
Cheol-Hea Koo +2 more
doaj +1 more source
DVB-RCS return link radio resource management for broadband satellite systems using fade mitigation techniques at ka band [PDF]
, 2008 Current Broadband Satellite systems supporting DVB-RCS at Ku band have static physical layer in order not to complicate their implementation. However at Ka band frequencies and above an adaptive physical layer wherein the physical layer parameters are ...
Laurent Castanet +7 more
core +1 more source
Performance analysis of the BDSBAS-B1C message in trial operation stage
Scientific Reports, 2023 BeiDou Satellite-based Augmentation System (BDSBAS) has come into the trial operation stage since July, 2020. To evaluate the characteristic of the augmentation message in BDSBAS-B1C signal, the effectiveness of the message content was firstly analyzed ...
Jie Xin +8 more
doaj +1 more source
Method of Tower-less Calibration for Phase Parameter of Tracking System
MATEC Web of Conferences, 2015 This paper introduced the principle of angle errors in tracking system. The demodulation was only related to signal envelop, and supported the phase calibration of radio star.
Ge Tiezhi +4 more
doaj +1 more source
SatERN: a PEP-less solution for satellite communications [PDF]
, 2011 In networks with very large delay like satellite IPbased networks, standard TCP is unable to correctly grab the available resources. To overcome this problem, Performance Enhancing Proxies (PEPs), which break the end-to-end connection and simulate a ...
Lopez Pacheco, Dino +8 more
core +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 Achievable Rates for the Return-Link of Multi-Beam Satellite Systems Using Successive Interference Cancellation [PDF]
, 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