global system for mobile communications gsm technology

... GSM – GLOBAL SYSTEM FOR MOBILE COMMUNICATION Kiến trúc hệ thống giao thức Nhóm sinh viên: Trần Xuân Bách Nguyễn Tiến Đạt Đỗ Trung Đức Các bước phát triển GSM Các bước phát triển GSM Kiến ... ? ?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 ... Module) Hệ thống GSM sử dụng khoá nhận dạng thuê bao cất nhớ nhỏ gọn gọi SIM-CARD Được cắm vào máy di động để thông tin trực tiếp với VLR gián tiếp với HLR Base Station Subsystem (BSS) Trạm

Ngày tải lên: 24/06/2022, 08:30

... 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 Specifications ... possible  The GSM network is divided into three major systems: ► switching system (SS) • is responsible for performing call processing and subscriberrelated functions ► base station system (BSS), ...  The GSM 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

Ngày tải lên: 05/07/2022, 13:09

... 1 Global System for Mobiles GSM 2 TOPICS • GSM CONCEPTS • GSM SYSTEM ARCHITECTURE • IDENTITIES USED IN GSM • GSM CHANNELS • GSM RADIO LINK • MOBILITY MANAGEMENT ... 374 299 GSM systems Uplink Downlink GSM 450 GSM 480 450.4-457.6 478.8-486 GSM 900 E -GSM (900) R -GSM (900) GSM 1800 GSM 1900 GSM 850 824-849... Frequency Channel Number GSM Family ... 457.6 478.8 GSM 450 Downlink 460.4 824 GSM 480 467.6 488.8 849 GSM 850 496 869 894 MHz 915 Uplink 876 880 486 915 890 915 1710 1785 1850 1910 P -GSM E -GSM GSM 1800 GSM 1900 R -GSM 921

Ngày tải lên: 19/10/2013, 15:15

... Shift Keying GMSK Global System for Mobile GSM International Mobile Telephony IMT IMT Direct Spread IMT-DS IMT Frequency Time IMT-FT IMT Multi-Carrier... to the system or the mobile phones ... Communications Second Generation Mobile Communications Third Generation Mobile Communications Fourth Generation Mobile Communications Advanced Mobile Phone Service Autoregressive ... vi Summary In digital communications, especially for mobile communications, adaptive signal processing techniques are widely used to improve the system performance. For example, adaptive equalization

Ngày tải lên: 17/09/2015, 17:18

... 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 ... and Systems for Video Technology, vol 17, no 9, pp 1103–1120, 2007 “Special issue on scalable video coding-standardization and beyond,” IEEE Transactions on Circuits and Systems for Video Technology, ... 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

Ngày tải lên: 26/03/2020, 03:16

... (Electronic) MULTIPLE ACCESS PROTOCOLS FOR MOBILE COMMUNICATIONS Multiple Access Protocols for Mobile Communications GPRS, UMTS and Beyond Alex Brand Swisscom Mobile, Switzerland Hamid Aghvami King’s ... GPRS Models for the Physical Layer and for User Traffic Generation 5.1 How to Account for the Physical Layer? 5.1.1 What to Account For and How? 5.1.2 Using Approximations for Error Performance ... 2.2.2 Digital Second Generation Systems 2.3 First 3G Systems 2.3.1 Requirements for 3G 2.3.2 Evolution of 2G Systems towards 3G 2.3.3 Worldwide 3G Standardisation Efforts 2.3.4 The Third Generation

Ngày tải lên: 20/04/2023, 09:32

... Therefore, system capacity is limited by interference, which is particularly crucial for mobile ter- minals with a single receive antenna. Nevertheless, next generation mobile communications systems ... forcing reception, particularly for high SNRs. 4.2. Closed-form BEP calculation for ZF-SAIC using M-ary ASK for transmission over Rayleigh fading channels In the following, we derive closed form ... has been assumed. 3. INTERFERENCE SUPPRESSION FOR OFDM TRANSMISSION In [13–15] an approach for SAIC was introduced for applica- tion in the GSM system where the interfering signal is elim- inated

Ngày tải lên: 22/06/2014, 06:20

... Subjects performed a battery of clinical testing and kinematic measurements of reaching collected by the NJIT-RAVR system. Subjects trained with the NJIT-RAVR System for one hour, 3 days a week for three ... not for citation purposes) Journal of NeuroEngineering and Rehabilitation Open Access Research The New Jersey Institute of Technology Robot-Assisted Virtual Rehabilitation (NJIT-RAVR) system for ... Page 3 of 10 (page number not for citation purposes) the possibility of forearm rotation and records three more degrees-of-freedom. Active force that assists or resists fore- arm rotation (i.e.,

Ngày tải lên: 19/06/2014, 08:20

... Therefore, system capacity is limited by interference, which is particularly crucial for mobile ter- minals with a single receive antenna. Nevertheless, next generation mobile communications systems ... forcing reception, particularly for high SNRs. 4.2. Closed-form BEP calculation for ZF-SAIC using M-ary ASK for transmission over Rayleigh fading channels In the following, we derive closed form ... has been assumed. 3. INTERFERENCE SUPPRESSION FOR OFDM TRANSMISSION In [13–15] an approach for SAIC was introduced for applica- tion in the GSM system where the interfering signal is elim- inated

Ngày tải lên: 22/06/2014, 19:20

... prominent usage in the digital 2G systems Popular 2G systems include the TDMA/FDMA based Global System for Mobile Communications (GSM) , which was first... systems, multiple access technologies ... Shift Keying GSM Global System for Mobile Communications ICI... Gaussian minimum shift keying (GMSK) and quaternary phase shift keying (QPSK) Sophisticated multiple access technology ... for Detection and Decoding of coded IFDMA System 36 2.7 Decoding Tree for S = 3, Q = 2 39 2.8 BER Performance Comparison for ZF QRD and MMSE QRD 46 2.9 BER Performance Comparison for

Ngày tải lên: 08/09/2015, 18:24

... PROPOSAL Building up a list of terms in British political system for students at School of Foreign Language in Hanoi University of Science and Technology Edited by Nguyễn Thị Nga Objectives:  Give ... coloring May have emotional coloring 2 British political system ‘Components of the Political System (1969), the political system is ‘an assembly of organizations and activities ... & Northern Ireland) = Justice for Peace (Scotland) II Literature review Pressure groups Pressure groups - Important part in the development of political & social systems Pressure groups = interest

Ngày tải lên: 17/12/2015, 14:51

... detection and warning for visually impaired people based on electrode matrix and mobile Kinect In 2015 2nd National Foundation for Science and Technology Development Conference on Information and Computer ... TRAINING HANOI UNIVERSITY OF SCIENCE AND TECHNOLOGY Hoang Van Nam DIFFICULT SITUATIONS RECOGNITION SYSTEM FOR VISUALLY-IMPAIRED AID USING A MOBILE KINECT Department : COMPUTER SCIENCE ... vision, I present in this thesis a difficult situations recognition system for visually impaired aid using a mobile Kinect This system is based on data captured from Kinect and using computer vision

Ngày tải lên: 16/07/2017, 17:26

... changed during the system design is clearly defined However, in contrast with SysML, the function-behavior-structure model covers only partial information of a system model For example, for the structure ... diagram is used for expressing system requirements and their relationships; system behavior is modeled by a SysML activity diagram; a SysML BDD and an IBD are used for capturing system structure ... Ontology for change propagation information Based on the specification of change scenarios that use a system model and a change process for documenting change propagation, this section formalizes

Ngày tải lên: 06/01/2018, 17:06

... 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 ... management system (MySQL) for main storage of the learning contents and server side-scripting language (PHP) The front-end part is the mobile application running on android mobile operating systems ... 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

Ngày tải lên: 10/01/2020, 10:34

... sector) 4.2.1 Sub-systems of ViLIS system of software ViLIS system has the following sub-systems: - Sub -system for exchanging and sharing land information (taken over from Land Information Gate ... land information system for all the levels; - Solutions are drafted and tested for technological policies to set up different softwares used for data transfer between software technology systems ... projects for Provinces) permits: access for searching macro-scale information and services for local detail information and updating; JSTPM Vol 1, No 4, 2012 - - - - - 99 Sub -system for integrating

Ngày tải lên: 03/02/2020, 01:00

... Reichenbacher Adaptive methods for mobile cartography ICC 2003, (August):10–16, 2003 K Al-Mekhlafi, X Hu, and Z Zheng An approach to context-aware mobile chinese language learning for foreign students In ... support for building context-aware applications Atlanta, GA, USA, 2000 Georgia Institute of Technology B Hu and P Moore ”smart context”: An ontology based context model for cooperative mobile ... NỘI - 2015 LỜI CAM ĐOAN Tôi xin cam đoan: Luận văn “Leaner open modeling in adaptive mobile learning system for supporting student to learn” kết nghiên cứu riêng với hướng dẫn TS.Trần Trúc Mai

Ngày tải lên: 07/03/2020, 18:39

... for creating a new vehicle 85 Người Userdùng Hệ thống System Form CSDL Database New adding Yêuvehicle cầu thêm request phương tiện Vehicle information form Yêu cầu nhập thông tin Entering information ... selected in FORM, TYPE field is (customer group) - Save the media information to the TRANSPORT table: the media information is on the form for the user to fill 89 - Fix the device information in ... internal system Profile for Smart Motor b Process flow description Step 1: The administrator receives new vehicle request: Step 2: The application displays the vehicle information form - The system

Ngày tải lên: 06/09/2020, 18:27

... Control MAHO Mobile Assisted Handover MA Mobile Allocation (of radio frequency channels) in GSM MAI Multiple Access Interference MAIO Mobile Allocation Index Offset (for frequency hopping in GSM) MBS Mobile ... which are discussed extensively in Chapter 4. For one 2G system called cdmaOne and most 3G systems, e.g. the Universal Mobile Telecommunications System (UMTS), DS/CDMA was chosen as a basic multiple ... Communication Systems 25 2.2.1 Analogue First Generation Cellular Systems 25 2.2.2 Digital Second Generation Systems 25 2.3 First 3G Systems 27 2.3.1 Requirements for 3G 27 2.3.2 Evolution of 2G Systems...

Ngày tải lên: 02/03/2013, 16:59

... (Release 99) Architecture. For readers familiar with the GSM, the MSC, G-MSC, HLR, and VLR (see Further reading for more information on GSM) are simply the normal GSM components but with added ... spectrally efficient that 1G. GSM (Global System for Mobile communication) has become the dominant 2G standard and roaming is now possible between 150+ countries where GSM is deployed. ã 3G - ... (number of systems [9]). 2G systems have not stood still and are introducing higher-speed packet data services (so- called 2.5G systems: the GSM 2.5G evolution is GPRS - GSM Packet Radio System) ....

Ngày tải lên: 27/10/2013, 17:15

... Center for Telecom- munications and Information Systems Laboratory, Stanford University, Stanford, CA, June 1994. [2] Second workshop on smart antennas in wireless mobile communications, Center for ... selection performance analysis of a switched multi-beamantenna systemin mobile communications environments, Stanford, CA,July 1995. Second workshop on Smart Antennas in Wireless Mobile Communications. [28] ... Telecom- munications and Information Systems Laboratory, Stanford University, Stanford, CA, July 20-21, 1995. [3] Third workshop on smart antennas in wireless mobile communications, Center for Telecom- munications...

Ngày tải lên: 16/12/2013, 04:15