Resource Management in Satellite Networks part 16 docx

... quality (interpreted in this context in terms of E b /I 0 ) increases for GOOD and decreases for BAD channel conditions. Likewise, if the information rate is kept constant, maintaining the same ... scheduled UE in each TTI. In particular, the HS-DSCH encoding scheme is based on the Release’99 rate-1/3 turbo encoding, but adds rate matching with puncturing and repetition to obtain a hi...

Ngày tải lên: 05/07/2014, 19:20

... Fraunhofer Institute - FOKUS, Berlin, Germany 2.1 Introduction The efficient exploitation of common resources is an important aspect in networking, at all protocol layers. In satellite networking, in particular, ... channel-state information and the point-to-multipoint service set the difference between the packet scheduler in the satellite radio interface from its counterpart in p...

Ngày tải lên: 05/07/2014, 19:20

... most critical part in satellite communications is the communication link between the satellite and the user terminal (i.e., downlink). The downlink availability could be the limiting factor for ... and multipath fading. Shadowing of the satellite signal is due to obstacles in the propagation path (buildings, trees, bridges, etc). Whereas multipath fading occurs because the satell...

Ngày tải lên: 05/07/2014, 19:20

... IETF in proposing two IP QoS frameworks. These frameworks are mainly designed with terrestrial networks in mind. However, the problems of achieving QoS in networks with wireless medium such as satellite ... the potential of what can be achieved in terms of QoS provision. Being in adjacent layers in the protocol stack, resource management (layer 2) in satellite netwo...

Ngày tải lên: 05/07/2014, 19:20

... efficiency. In the forward link, the introduction of spreading requires the design of a new DVB-S2 receiver. In the return link, each terminal could in principle implement direct spreading within the ... reservation, 54 HSDPA, 16, 108, 138, 139, 141, 144, 148 Hybrid satellite networks, 265 Erasure codes, 265 QoS, 266 WiFi networks, 267 I In nitesimal perturbation analysis, 99, 216,...

Ngày tải lên: 05/07/2014, 19:20

... (Chapter 4), the two following parts are conceived according to the ETSI SES/BSM protocol stack, thus distinguishing cross-layer issues involving satellite- dependent layers (Part II, Chapters 5, 6 ... translated or copied in whole or in part without the bidden. The use in this publication of trade names, trademarks, service marks and similar terms, Resource Management in Sa...

Ngày tải lên: 05/07/2014, 19:20

... entitled “Integrated Space/Terrestrial Mobile Networks . He also contributed to the Resource Management activity of the Working Group 3000 within the RACE Project, called Satellite Integration in the ... (PRMA) protocols suitable for supporting voice and data transmissions in low earth orbit mobile satellite systems. In 1999 he joined the Information Engineering Department of th...

Ngày tải lên: 05/07/2014, 19:20

... Board IBR Information Bit Rate ICMP Internet Control Message Protocol IEEE Institute of Electrical and Electronics Engineers IETF Internet Engineering Task Force IFR Increasing Failure Rate IM Inter-Modulation IMT ... Internet Protocol over Satellite ISDN Integrated Services Digital Network ISI Integral Satcom Initiative ISLs Inter -Satellite Links ISN Interactive Satellite Network ISO/O...

Ngày tải lên: 05/07/2014, 19:20

... for both uplink and downlink Uplink: 161 6 -162 6.5 MHz (L Band) Downlink: 161 0 -162 6.5 MHz (L Band) ICO (new ICO) 12 MEO (10 active), 10355 (changed to 10390 km, late 1998) ICO is planning a family of quality ... (from Earth to satellite to Earth and back) since layer 2 control functions are in the Earth station. In case of GEO regenerating satellites, RTD varies in the range 239...

Ngày tải lên: 05/07/2014, 19:20

... time-frequency resources (according to an MF-TDMA air interface) to the requesting terminals. The Return Channel Satellite Terminal (RCST) transmission capacity is constrained. According to the standardization, ... Reed-Solomon coding, convolutional interleaver, inner convolutional encoding, puncturing), base-band shaping of impulses, and QPSK modulation. The resulting DVB-S transmissions v...

Ngày tải lên: 05/07/2014, 19:20