gsmr global system for mobile communication railway

... Advanced Mobile Phone Service (AMPS) • Analog, Circuit Switched, FDMA, FDD • 2G : Digital Advanced Mobile Phone Service (D-AMPS) • Digital, Circuit Switched, FDMA, FDD • 2G : Global System for Mobile ... Network Nb Conformity with E212 Nature International Mobile Subscriber Identity Similar to ISDN, Conformity with E164/E213 Identify a PLMN worldwide MCC MNC Meaning Mobile Country Code Mobile Network ... (Bytel) Mobile Country Code Mobile Network Code digits Global GSM Mobility Card The Smart Card to use digits Mobile Subscriber Identification Number (MSIN) H1 H2 X X X X X X 10 digits max NMSI LAI Mobile...

Ngày tải lên: 19/10/2013, 15:15

... an Intel Mobile Pentium III processor at 866MHz The IEEE INFOCOM 2003 B System performance vs network resource We next evaluate the performance of our system One major metric of the performance ... depend on the sending/forwarding strategy of the mobile nodes As we have discussed in Section III, although our system provides incentive for cooperation by giving more credit for forwarding a message, ... based on the current performance of the system However, the preferred and dominant way to get more credit is by forwarding others’ messages In order to get credit for forwarding others’ messages,...

Ngày tải lên: 15/03/2014, 04:20

... (AuC), for example These procedures are described later in the chapter for the GSM system 1.2.2 First-Generation (1G) Systems 1.2.2.1 Introduction In the future mobile information society, where mobile- multimedia ... (2G) Systems 1.2.3.1 Global System for Mobile Communications (GSM) Development Following a proposal by Nordic Telecom and Netherlands PTT, the Group ´ Special Mobil (GSM) study group was formed ... allocated the bands 890–915 MHz for the uplink (mobile to BS) and 935–960 MHz for the downlink (BS to mobile) for mobile networks As has already been seen, analogue mobile services were already...

Ngày tải lên: 14/09/2012, 11:26

... Server Mobile Assisted HO Mobile Application Part Maximum a Posteriori Mobile BCF Mobile Country Code Mobile Control Function Mobile Controlled HO Multiple Channels Per Carrier Mobile Communications ... Positioning System Generic Radio Access Network Gateway Station Control Global System for Mobile Communications GPRS Support Node Geostationary Orbit GPRS Tunnelling Protocol Gateway Transceiver Subsystem ... Telegraphs Cell Global Identification Carrier Information Cell Identity Control Information Customer Information Management System Connection Management Core Network Care-of-Address Communications...

Ngày tải lên: 14/09/2012, 11:26

... into account for the elderly as the life assistant Moreover, we also provide the personal health information system and the medical guidance which contains the communication platform and medical ... platform and medical knowledge database Therefore, the main functions of our system are described below • A real-time mobile health monitoring system for the elderly to monitor the health condition ... health information system • The medical guidance • A living assistant that offers some auxiliary functions to cater for the living demands of the elderly A Mobile Health Monitoring System iCare...

Ngày tải lên: 28/03/2014, 19:21

... GSM-WLAN heterogeneous mobile communication networks [27-30] to 3G/UMTS-WLAN heterogeneous mobile communication networks Furthermore, the AVD function in the RADIUS is responsible for the execution ... scheme for UMTS-WLAN interworking, in Proceedings of IEEE Globalcom 2004, 3, 1559–1564 (2004) M Kim, H Ju, Y Kim, J Park, Design and implementation of mobile trusted module for trusted mobile ... fast iterative localized re-authentication protocol for UMTS-WLAN heterogeneous mobile communication networks EURASIP Journal on Wireless Communications and Networking 2011 2011:124 Submit your...

Ngày tải lên: 20/06/2014, 22:20

... telecommunication systems are connected together via the satellite communication model to provide diversified communication services, thus forming the so-called mobile satellite communication system ... scheme for mobile satellite communication systems ACM SIGOPS Oper Syst Rev 145(2-3), 42–47 (2003) 15 YF Chang, CC Chang, An efficient authentication protocol for mobile satellite communication systems ... of mobile satellite communication systems and the required security properties to efficiently establish a secure mobile satellite communication link [1,12-16] Page of 10 2.1 Mobile satellite communication...

Ngày tải lên: 21/06/2014, 00:20

... proof of Theorem 2.2 Global Attractors In this section, we establish the existence of the global attractor for system 1.1 – 1.5 Advances in Difference Equations Setting v system w1t , ϕ w3t , ... exponential stability for the Timoshenko system, but when the wave speeds are different, the Timoshenko system loses the exponential stability This phenomenon has been observed for partially damped ... constants for the elastic and thermal material properties From this seemingly complicated system, very interesting special cases can be obtained In particular, the isothermal system is exactly the system...

Ngày tải lên: 21/06/2014, 11:20

... Unit Selection for Speech Synthesis The communication system is tailored to each speaker and to the particularities of his speech disorder An efficient alternative communication system must take ... recognition for speech training purposes in order to help persons with SSD [22–24] The adaptive system we propose uses speaker-dependent automatic speech recognition systems and speech synthesis systems ... Speech-Enabled Systems to Correct Dysarthria and SSD 4.1 Overall System Figure shows the system we propose to recognize and resynthesize both dysarthric speech and speech affected by SSD This system is...

Ngày tải lên: 21/06/2014, 20:20

... candidate at the Institute of Information and Communication, Chonbuk National University, Korea His main research interests are sequences, CDMA mobile communication systems, error coding, and space ... given code rate for MLC/PID designs Therefore, we list several parameters which should be satisfied in the proposed MLC/PID design for 8PSK modulation 146 EURASIP Journal on Wireless Communications ... However, for MLC/PID design, the parameters of SA-LDPC code are difficult to be decided Generally, in the special case, the SA-LDPC code can be used to design MLC system with good performance and...

Ngày tải lên: 23/06/2014, 00:20

... Universal Mobile Telecommunications System (UMTS); Noise Suppression for the AMR Codec; Service Description, June 2002 ETSI, TR 126 978, V4.0.0: Universal Mobile Telecommunications System (UMTS); ... are greatly reduced if we use a tapered window for spectral synthesis as well as one for spectral A Noise Reduction Preprocessor for Mobile Voice Communication analysis [12] We found that a tapered ... Preprocessor for Mobile Voice Communication We therefore turn our attention to the a posteriori SNR, γk , defined in (12) and determined directly from the squared amplitude R2 , once an estimate for noise...

Ngày tải lên: 23/06/2014, 01:20

... services and applications suitable for mobile communication systems EVOLUTION OF MOBILE COMMUNICATION SYSTEMS For a better understanding of today’s wireless communication systems and developments, we ... from the ITU for mobile communication systems with capabilities which go further than that of IMT-2000 is IMT-Advanced, previously known as “systems beyond IMT-2000” For more detail information ... which means that it is considered a second generation (2G) mobile phone system This first version GSM, now called global system for mobile communication, works at 900 MHz and uses 124 full-duplex...

Ngày tải lên: 27/06/2014, 09:20

... services and applications suitable for mobile communication systems EVOLUTION OF MOBILE COMMUNICATION SYSTEMS For a better understanding of today’s wireless communication systems and developments, we ... from the ITU for mobile communication systems with capabilities which go further than that of IMT-2000 is IMT-Advanced, previously known as “systems beyond IMT-2000” For more detail information ... which means that it is considered a second generation (2G) mobile phone system This first version GSM, now called global system for mobile communication, works at 900 MHz and uses 124 full-duplex...

Ngày tải lên: 07/08/2014, 21:20

... 3GPP2 are discussing visions of systems beyond 3G The major drivers for these systems are the increasing demand for personal mobile communications with respect to performance, applications, traffic, ... access communication systems, not only cellular systems The 4G systems not only will support the next generation of mobile services, but also will support the fixed wireless networks 4G systems ... variety of services, it may be necessary for IMT-Advanced to have different radio interfaces and frequency bands for mobile access for highly mobile users and for new nomadic/local area wireless access...

Ngày tải lên: 07/08/2014, 21:20

... Nowadays, the most prominent CDMA applications are mobile communication systems like IS-95, cdma2000 or WCDMA To apply CDMA in a mobile communications systems there are specific additional methods ... demands for broadband services, which is now in full force in fixed networks Demands for downloading of ever increasing volume of information will become higher and higher even in mobile communications ... Wireless and Mobile Systems, Brook/Cole, Pacific Grove Etoh M., 2005, Next Generation Mobile Systems 3G and Beyond, Wiley, Wiltshire Fazel K., Kaiser S., 2003, Multi-Carrier and Spread Spectrum Systems,...

Ngày tải lên: 07/08/2014, 21:20

... considered They are given by (7) wk = ⎧ ∗ ⎪H k ⎪ ⎪ ∗ ⎪H k ⎪ ⎨ for MRC Hk H∗ k Hk ⎪ ⎪ ⎪ ⎪ ∗ ⎪H k ⎩ for ZF for EGC Hk + C Es SF N0 −1 for MMSE where Es /N0 (=Ec SF/N0 is the average received signal ... Similar to ISI cancellation for MC-CDMA, ICI cancellation for SC-CDMA can be carried out either in the time-domain or in the frequency-domain after performing MMSE-FDE For the frequency-domain ICI ... fading channel with uniform power delay profile ( = dB), and ideal channel estimation The BER performance using frequency-domain STTD is plotted in Figure 14 for SF=16 For comparison, the single...

Ngày tải lên: 07/08/2014, 21:20

... transmitter and receiver for a certain subcarrier, respectively Therefore, the BER of SC-DS/CDMA system will be discussed in the next section on MC-DS/CDMA system MC-DS/CDMA SYSTEM 6.1 Transmitter ... users for the MC-DS/CDMA and MC-CDMA systems in the downlink, respectively For the MC-DS/CDMA system, the number of rake processors decreases, the BER is degraded because of the same reason for ... increases For the MC-CDMA system, on the other hand, the BER of the ORC is flat and poor because of noise enhancement The MRC is optimal only for the case of a single user, so it performs best only for...

Ngày tải lên: 07/08/2014, 21:20

... performing a series of operations to access the system The information necessary for access to the system is received on the paging channel of Forward link After successfully accessing the system, ... spectrum CDMA systems,” Proc of IEEE GLOBECOM’93, pp.1723–1728, Nov 1993 [7] V.M.DaSilva and E.S.Sousa, “Performance of Orthogonal CDMA Codes for Quasi-Synchronous Communication Systems,” Proc ... supervisory system Other common channels include the sync channel that transmits data necessary for synchronization between terminal and system, and the paging channel that provides system information...

Ngày tải lên: 07/08/2014, 21:20

... developed by 3GPP allows for mobile- communication systems to provide packet-data services with a performance far exceeding what can be provided with mobile- communication systems based on earlier, ... used for the transmission of higher-level data, control information, and power control information from a base station to a mobile station Forward Power Control Subchannel A subchannel on the Forward ... peak data rate for the forward link and 2Mbps for the reverse link The HSDPA is expected to have advantages over other services in the global roaming, because 85% of the mobile communication service...

Ngày tải lên: 07/08/2014, 21:20

... from a transmit-power point-of-view In point-to-point communications, for example for HS-DSCH and E-DCH, some form of ARQ mechanism is therefore typically used to reduce the residual error rate ... simplifies the procedures for mobile- terminal measurements, e.g., for cell reselection in case of MBMS reception For HSDPA, the scheduler can avoid scheduling data to a given mobile terminal in certain ... lengths are specified for effectively supporting physical channels for system- dependent environments: short and long CPs – A short CP is used for Unicast services – A long CP is used for Multimedia...

Ngày tải lên: 07/08/2014, 21:20