gsmr global system for mobile communication–railway

... ? ?Mobile Station (MS) ? ?Mobile Equipment (ME) Subscriber Identity Module (SIM) Base Station Subsystem (BBS) Base Transceiver Station (BTS) Base Station Controller (BSC) Network Subsystem ? ?Mobile ... GSM – GLOBAL SYSTEM FOR MOBILE COMMUNICATION Kiến trúc hệ thống giao thức Nhóm sinh viên: Trần Xuân Bách Nguyễn ... tin trực tiếp với VLR gián tiếp với HLR Base Station Subsystem (BSS) Trạm thu phát sở BTS (Base Transceiver Station) Base Station Subsystem (BSS) Trạm thu phát sở BTS (Base Transceiver Station)

Ngày tải lên: 24/06/2022, 08:30

... major systems: ► switching system (SS) • is responsible for performing call processing and subscriberrelated functions ► base station system (BSS), • All radio-related functions are performed ... Wireless Networks Lecture 16 GSM: Global System for Mobile Communication Dr Ghalib A Shah Outlines         Review of Last Lecture GSM Introduction GSM System Architecture GSM Network Areas ... operator is responsible for provisioning this data in the HLR The MSC and GMSC in a PLMN, on the other hand, are not specific for one subscriber group 18 19 Mobile Station  Mobile  Equipm e nt (ME) 

Ngày tải lên: 05/07/2022, 13:09

... PSNR of crowd sequence for the first 120 frames This paper discussed the use of DVB-T2 system as a bearer for mobile data using H.264/SVC Three important challenges for mobile transmission: power ... quality encodings by splitting or refining the transform coefficients For detailed information about architecture, system, and transport interface for SVC, the reader is referred to the Special Issue ... provides a good baseline for the future development of a new mobile broadcast system The new system would be able to reuse the infrastructure and components that would be available for DVB-T2 At the

Ngày tải lên: 26/03/2020, 03:16

... the throughput of Mobile Switching Center (MSC) in Global System for Mobile Communications (GSM) network The book begins by building the core knowledge of Global System for Mobile Communications ... Algorithm for Mobile Communication Networks Sliding Window Algorithm for Mobile Communication Networks Nuka Mallikharjuna Rao Mannava Muniratnam Naidu Sliding Window Algorithm for Mobile Communication ... its throughput for a given sliding window size The insights provided by the model [30] for determining an optimal sliding window size and the proposed model are immensely useful for formulating

Ngày tải lên: 15/09/2020, 11:42

... (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 ... 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 ... (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

Ngày tải lên: 14/09/2012, 11:26

... the aforesaid mobile communication generations in detail and describe the services and applications suitable for mobile communication systems 2 EVOLUTION OF MOBILE COMMUNICATION SYSTEMS ... Italy prepare a trial for 2006 • UK launch a trial for 2006 Main competitor of DMB system in mobile TV field is the DVB-H system DVB-H is a technical specification for bringing broadcast ... Iridium system The Iridium satellite constellation is a system of 66 active communication satellites in low earth orbit and uses 1.6 GHz band for communication with the mobile phone The system

Ngày tải lên: 27/06/2014, 09:20

... the aforesaid mobile communication generations in detail and describe the services and applications suitable for mobile communication systems 2 EVOLUTION OF MOBILE COMMUNICATION SYSTEMS ... 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

... 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 ... launch T-DMB for the world cup 2006 • France currently makes a trial in Paris • Switzerland and Italy prepare a trial for 2006 • UK launch a trial for 2006 Main competitor of DMB system in mobile TV ... merging a mobile phone with a TV is something that everyone can understand. And with our universal hunger for information and connectivity, mobile DTV presents the perfect opportunity for users

Ngày tải lên: 07/08/2014, 21:20

... demanded for the beyond 3rd generation (3G) wireless mobile communications systems Wireless channels for such high-speed... D.P., Zeng Q., 20 03, Introduction to Wireless and Mobile Systems, ... cdma2000 Rate 3 Used for channelization, except 1st sequence that consists all 1s Used for waveform encoding (orthogonal modulation) Long PN code 2 42 -1 Used for scrambling Used for channelization ... values -13 dB for the target SNR, -100 dBm for the uplink noise and interference, and 40 dBm (10 W) for the BS power. The actual values of these parameters may be different and data for calibrating

Ngày tải lên: 07/08/2014, 21:20

... wk = ⎧ ⎪ ⎪ ⎪ ⎪ ⎪ ⎨ ⎪ ⎪ ⎪ ⎪ ⎪ ⎩ H ∗ k for MRC H ∗ k   Hk  2 for ZF H ∗ k   Hk  for EGC H ∗ k   Hk  2 +  C SF E s N 0  −1  for MMSE where E s /N 0 (=E c SF/N 0  is ... 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 ... SF = 16 For block spread SC-CDMA, SFu SFu = U 16/U is assumed for all users When the system is lightly loaded (i.e., U = 8), conventional SC-CDMA using MUD exhibits better BER performance...

Ngày tải lên: 07/08/2014, 21:20

... MC-CDMA receiver for the k-th user Defining the subcarrier output vector (JM × 1) for a... The MRC is optimal only for the case of a single user, so it performs best only for the case, and ... for the case of a single... 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 ... theindicesfortrans- mitted symbol and path gain in impulse response are defined as i and l, respectively. The i-th data symbol for the k-th user is defined as a ki for the single-carrier system

Ngày tải lên: 07/08/2014, 21:20

... greatly improve the performance of the forward link so that it is expected that the the multimedia service can be provided through mobile Internet. Figure 26. Forward link performance comparison ... more mobile stations Forward Dedicated Control Channel A portion of a Radio Configuration 3 through 9 Forward Traffic Channel used for the transmission of higher-level data, control information, ... information from a base station to a mobile station Forward Power Control Subchannel A subchannel on the Forward... release, the 3rd generation WCDMA standard developed by 3GPP allows for

Ngày tải lên: 07/08/2014, 21:20

... commonality... 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 ... non-orthogonal codes for different mobile terminals in WCDMA, there is no need to share channelization codes between mobile terminals on the uplink. Thus, there is less probability for the uplink to ... frequently for the uplink compared to the downlink. This further reduces the probability for the uplink to be bandwidth limited rather than power limited. For these reasons and in order to reduce the mobile- terminal

Ngày tải lên: 07/08/2014, 21:20

... Cat 1 for UE 1 Cat 1 for UE 2 Cat 1 for UE 3 Figure 13 Channel coding scheme for L1/L2 control information Cat 2/3 for UE 1 Cat 2/3 for UE 2 Cat 2/3 for UE 3 240 CHAPTER 7 information ... and 2/3 for multiple sets of UE Cat 1 for multiple sets of UE Cat 2/3 for UE 1 Cat 2/3 for UE 2 Cat 2/3 for UE 3 Cat 1 and 2/3 for UE 1 Cat 1 and 2/3 for UE 2 Cat 1 and 2/3 for UE ... Uplink scheduling information for the downlink shared data channel • UE identity and RB assignment information: Similar to downlink-related information – Control information for demodulation of

Ngày tải lên: 07/08/2014, 21:20

... channel information is not needed for the Rake system to perform effectively. In other words, it avoids the estimation of multipath channel which must be provided for conventional Rake receiver systems. ... architecture for a MB-OFDM system. The transmitter and receiver architecture for a MB-OFDM system are very similar to those conventional wireless OFDM systems. The main difference is that the MB-OFDM system ... Three types of UWB systems are defined in this R&O: imaging systems, communication and measurement systems, and vehicular radar systems. Specifically, UWB characterizes transmission systems with instantaneous

Ngày tải lên: 04/10/2015, 17:05

... IBC transceiver system 20 Fig 2.5 Simplified block diagram of the (a) passband system and (b) baseband system 21 Fig 2.6 Capacitive coupling and galvanic coupling for data transmission ... discussed For the empirical study, we consider limb joint effect of human arm at IBC signal transmission for a wide frequency range (up to 200MHz) With investigation details for path loss in IBC system, ... band is also a high priority for current and future IBC system design The signal duty cycle is another factor at the modulation scheme determination in IBC system design for higher data rate and

Ngày tải lên: 28/11/2015, 14:02

... Press one for English or Press two for Amharic Press three for Introduction to the BCC.IVR system Please choose a topic Press one for First Aid Press two for Reproductive Care Press three for Nutrition ... Diagram for the BCC-IVR system 45 Figure 4: Class Diagram for the BCC-IVR system 57 Figure 5: Activity Diagram for Listening BCC message 58 Figure 6: Activity Diagram for ... one for “First Prenatal Visit” Press two for “Each Subsequent Prenatal Visit” Press three for “Testing recommended for all pregnant women” Press four for “Education and counseling” Press five for

Ngày tải lên: 14/08/2017, 16:46

... settings and system configurations System administrator Interface and different components of the system Fig presents interface and system components for the mobile client application for users ... following building blocks: i Mobile application interface: The front-end part is the mobile application running on Android mobile operating systems deployed on the user’s mobile 454 ii iii iv v M ... Content Delivery System (Mobile- LCDS) is installed in users’ access devices; it will provide the mobile user with a user interface to interact with the system, and a persistent storage for the temporary

Ngày tải lên: 10/01/2020, 10:34

... Network OMC AUC HLR MSC EIRVLR BSC BTS MS External PSTN & PDN N/W SS BSS Switching System Base Station System MS Mobile Station BTS Base transceiver System BSC Base Station Controller MSC Mobile Switching Center HLR Home Location ... messages • International Mobile Equipment Identifier (IMEI) 38 GSM Architecture HLR VLR EIR AUC MSC B S C B S C SMSC PSTN VMSC Mobile Station GSM Air interface OMCR TRAU Base Station System Network and ... Circuit Switched Data EDGE = Enhanced Data rate for GSM Evolution UMTS = Universal Mobile Telecommunication System 10 sec 1 min 10 min 1 hour0 UMTS E/GPRS ISDN PSTN GSM webe-mail photo web photo e-mail web...

Ngày tải lên: 19/10/2013, 15:15

... bandwidth and storage requirement. B. System performance vs. network resource We next evaluate the performance of our system. One major metric of the performance of our system is the message success rate, ... Sprite, a simple, cheat-proof, credit- based system for stimulating cooperation among selfish nodes in mobile ad hoc networks. Our system provides incentive for mobile nodes to cooperate and report actions ... discussed in Sec- tion III, although our system provides incentive for cooperation by giving more credit for forwarding a message, whether or not to forward a specific message will depend on the...

Ngày tải lên: 15/03/2014, 04:20