multiple access techniques for mobile communication ppt

... bidirectional communication CCU Wireless Access Tech Lab Wireless Access Tech Lab Introduction (4) CCU Wireless Access Tech Lab Wireless Access Tech Lab Frequency Division Multiple Access (FDMA) ... Multiple Access Techniques for Wireless Communications 2005/07/06 Weng Chien-Erh Wireless Access Tech Lab Table of Contents(1) Introduction ... Wireless Access Tech Lab Wireless Access Tech Lab Frequency Division Multiple Access (FDMA) (2) Allocation of separate channels to FDMA signals CCU Wireless Access Tech Lab Wireless Access Tech

Ngày tải lên: 11/07/2014, 21:20

... 0-470-84622-4 (Electronic) MULTIPLE ACCESS PROTOCOLS FOR MOBILE COMMUNICATIONS Multiple Access Protocols for Mobile Communications GPRS, UMTS and Beyond Alex Brand Swisscom Mobile, Switzerland Hamid ... 48 Multiple Access in Cellular Communication Systems 3.1 Multiple Access and the OSI Layers 3.2 Basic Multiple Access Schemes 3.3 Medium Access Control in 2G Cellular Systems 3.3.1 Why Medium Access ... PRMA-based Protocol for Hybrid CDMA/TDMA 1.4.1 Why Combine CDMA and PRMA? 1.4.2 Hybrid CDMA/TDMA Multiple Access Schemes 1.4.3 Literature on Multiple Access Protocols for Packet CDMA 1.4.4 Access Control

Ngày tải lên: 20/04/2023, 09:32

... protocols for providing mobile users with integrated Personal Information Services and Applications (PISA), such as personalized news and financial information, and mobile database access. We ... server should start sending information to the mobile. 238 N. Krishnakumar, R. Jain / Escrow techniques for mobile applications 4. Escrow-based replica control for partitionable data We now describe ... 0<=m1’<=50 C1 for type m: 0<=m1<=40 E1’ for type m’: 20<=m1’<=20 E1 for type m: 30<=m1<=30 C2 for type m: 0<=m2<=50 C2’ for type m’: 0<=m2’<=50 E2 for type m: 10<=m2<=10 E2’

Ngày tải lên: 16/03/2014, 15:20

... time is spent in (b) for ME and MC (not shown for convenience) For visualization of the complexity reduction, we normalize the execution time for each module to 100% for full processing ... are not algorithm-specific optimizations and therefore are suitable for only a few hardware architec- tures. Complexity Scalable MPEG Encoding for Mobile 239 An algorithm-specific optimization that ... reducedtobeabletoexecutemorethanoneoperationin parallel. As described for the DCT, this technique is suitable for a few hardware architectures only. Up to this point, we have assumed that ME is performed for each macroblock. However,

Ngày tải lên: 23/06/2014, 01:20

... Algorithm for Mobile Communication Networks Sliding Window Algorithm for Mobile Communication Networks Nuka Mallikharjuna Rao Mannava Muniratnam Naidu Sliding Window Algorithm for Mobile Communication ... 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 ... with a Multiple Server Finite Queuing Model’ presents integration of sliding window algorithm with a multiple finite queuing model Later, a simulation model is developed for evaluating the performance

Ngày tải lên: 15/09/2020, 11:42

... 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 trúc hệ thống ? ?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 Switching ... Visitor Location Register (VLR) Authentication Center (AUC) Equipment Identity Register (EIR) ME (Mobile Equipment) ME thiết bị mà người dùng sử dụng để thơng tin với ME thiết bị cầm tay điện thoại

Ngày tải lên: 24/06/2022, 08:30

... Sliding window ► Go-back-N Multiple Access Techniques     Frequency Division Multiple Access (FDMA) Time Division Multiple Access (TDMA) Random Access Code Division Multiple Access (CDMA)  User ... Wireless Networks Lecture Multiple Access Techniques Dr Ghalib A Shah Outlines      Review of previous lecture #5 FDMA TDMA CDMA Random Access ► ALOHA ► Slotted ALOHA ► Reservation-based ... in contrast to fixed -access schemes, each user gains access to medium only when needed -has some data to send • drawback: users must compete to access the medium (‘random access? ??) • collision

Ngày tải lên: 05/07/2022, 13:06

... 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)  ... switching system (SS) • is responsible for performing call processing and subscriberrelated functions ► base station system (BSS), • All radio-related functions are performed in the BSS, which consists ... switching entity in the network Is connected to the radio access network (RAN); the RAN is formed by the BSCs and BTSs within the Public Land Mobile Network (PLMN) all calls to and from the user are

Ngày tải lên: 05/07/2022, 13:09

... different performance is illustrated as performing comparisons between NOMA and orthogonal multiple access (OMA) Finally, the advantage of NOMA in secure performance over orthogonal multiple access ... studied as employing an emerging multiple access scheme, namely non-orthogonal multiple access (NOMA) This paper proposes a new scheme to consider secure performance, to be called relay selection ... design of RS-NOMA For the first time, we analytically prove that the relay selection provides improved secure performance at higher number of relay for RS-NOMA For Decode-and-Forward (DF) mode,

Ngày tải lên: 22/11/2022, 19:46

... 11.0.3 updater for Dreamweaver CS5 in August 2010 The updater added code hints for HTML5... on a mobile device In many cases, it’s best to create a custom-built site for mobile users ... process Before describing the new HTML5, CSS3, and mobilerelated features in Dreamweaver CS5.5, I’ll address what I suspect is a burning question for many of you... the mobile operating ... [...]... styles for earlier browsers 5 Chapter 1 Dreamweaver Goes Mobile The version of PhoneGap integrated in Dreamweaver CS5.5 supports only Google’s Android and Apple’s iOS (for iPhone,

Ngày tải lên: 27/06/2014, 05:20

... discuss the aforesaid mobile communication generations in detail and describe the services and applications suitable for mobile communication systems 2 EVOLUTION OF MOBILE COMMUNICATION ... broadband access standard called WiMax (Worldwide Interoperability for Microwave Access) Formed in April 2001 to promote conformance and interoperability of the standard IEEE 802.16, the WiMax Forum ... parameters and radio access requirements for WiBro system WiBro adopts OFDMA/TDD for multiple -access and duplex schemes, and aims to provide a high data rate wireless Internet access with PSS

Ngày tải lên: 27/06/2014, 09:20

... discuss the aforesaid mobile communication generations in detail and describe the services and applications suitable for mobile communication systems 2 EVOLUTION OF MOBILE COMMUNICATION ... to the application of beamforming... (WiMax, Mobile WiMax/WiBro), • 802.20 Mobile Broadband Wireless Access (suspended until 1 October 2006), etc For more information about IEEE and 802 ... 3GPP is an OVERVIEW OF MOBILE COMMUNICATION 7 international collaboration of a number of telecommunications standards bodies to standardize UMTS (Universal Mobile Telecommunications System)

Ngày tải lên: 07/08/2014, 21:20

... 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 One ... multiple access (FDMA), time division multiple access (TDMA), and code division multiple access (CDMA) 39 Y Park and F Adachi (eds.), Enhanced Radio Access Technologies for Next ... Division Multiple Access Communication, IEEE press and Wiley-Interscience, Piscataway CHAPTER 2 RADIO ACCESS TECHNIQUES YONGWAN PARK1 AND JEONGHEE CHOI2 1 Department of Information and Communication

Ngày tải lên: 07/08/2014, 21:20

... where the mobile is in communication with multiple Base Stations at the same time. Soft handover is a make-before-break type of handover, whereby a mobile acquires a target code channel before breaking ... Radio for Mobile Communications, Artech House, London 7 Holma H., Toskala A., 2004, WCDMA for UMTS, 3rd ed., Wiley, Cornwall 8 Korhonen J., 20 03, Introduction to 3G Mobile Communications, ... Radio Access Technologies for Next Generation Mobile Communication, 81–120 © 2007 Springer 82 CHAPTER 3 want to be connected anytime, anywhere with the networks for not only

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 ... transmitted chip block. The BER performance for the case of SF = 16 is plotted in Figure 12 with the code-multiplexing order C as a parameter. When C =1, the BER performance approaches the theoretical

Ngày tải lên: 07/08/2014, 21:20

... Radio Access Technologies for Next Generation Mobile Communication, 191–216 © 20 07 Springer 192 CHAPTER 6 The introduction... for the transmission of digital control information ... 80-H0410-1 Rev.X3, “Reverse Link Medium Access. .. Multiplexing Access Forward CDMA Channel A CDMA Channel from a base station to mobile stations The Forward CDMA Channel contains one or more ... 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,

Ngày tải lên: 07/08/2014, 21:20

... Radio Access Technologies for Next Generation Mobile Communication, ... Japan 2 Abstract: This chapter describes the radio access technologies and physical-layer channels for ... 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 ... when the broadcast/multicast information is to be received by a large number of mobile terminals within the cell. The two main techniques for providing diversity for MBMS services in WCDMA are

Ngày tải lên: 07/08/2014, 21:20

... FDM multiplexing [...]... Separate Separate Cat 1 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 ... and 2/3 for UE 2 Cat 1 and 2/3 for UE 3 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 ... procedure for paging information 234 CHAPTER 7 4.3.2 Multiplexing of PI information and PCH Figure 9 illustrates an example of the multiplexing of PI information and the PCH. The PI information

Ngày tải lên: 07/08/2014, 21:20

... Standards 46 2.6 Summary 48 3 Multiple Access in Cellular Communication Systems 49 3.1 Multiple Access and the OSI Layers 49 3.2 Basic Multiple Access Schemes 53 3.3 Medium Access Control in 2G Cellular ... CDMA/TDMA Multiple Access Schemes 14 1.4.3 Literature on Multiple Access Protocols for Packet CDMA 15 1.4.4 Access Control in Combined CDMA/PRMA Protocols 15 1.4.5 Summary 21 2 Cellular Mobile Communication ... (EGPRS) M MAC Medium Access 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...

Ngày tải lên: 02/03/2013, 16:59

... Visit AFT’s Web site for classroom resources at www.aft.org/tools4teachers today. Assigning Effective Homework Quality Classroom Assessment Techniques Techniques Loan Forgiveness Creating ... the safest environ- ments for children. However, in far too many schools, a lack of respect for the authority of teachers and other school employees, as well as for the rights of other students, ... practices—based on research and demonstrated to work—that are eective for preventing and correcting this behavior. Techniques for managing the aggressive behavior of students include prevention...

Ngày tải lên: 17/03/2014, 20:20