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McGraw-Hill-2002-WCDMA and cdma2000 for 3G Mobile Networks
... 1995. Standards for 3G wireless services were published in 1999. Support for high-speed data at rates from 144 kb/s for urban and suburban outdoor envi- ronments to 2,048 Mb/s for indoor or low-range ... Information is trans- mitted in frames, each consisting of a number of time slots, some of which are used for uplink transmissions and the rest for downlink. Chapter 11 Beyond 3G 355 Driving Force ... band-limited to 300 — 3000 Hz Data Rate 10 kb/s (only for control) Modulation FM for speech, FSK for data Frequency Deviation 12 kHz for speech and 8 kHz for data User Data Transfer Capability None Table...
Ngày tải lên: 02/03/2013, 16:58
Tài liệu W-CDMA and cdma2000 for 3G Mobile Networks pdf
... band-limited to 300 — 3000 Hz Data Rate 10 kb/s (only for control) Modulation FM for speech, FSK for data Frequency Deviation 12 kHz for speech and 8 kHz for data User Data Transfer Capability None Table ... this problem, a new standard called Global System for Mobile Communications (GSM) was developed in 1990 for next-generation digital cellular mobile communications in Europe. Systems based on ... different aspects of 3G mobile communi- cations. They developed algorithms and air interfaces, performed simulation, built prototypes, and conducted field tests to verify their validity. 3G partnership...
Ngày tải lên: 23/12/2013, 01:17
McGraw Hill - 2002 - W-CDMA and cdma2000 for 3G Mobile Networks_2 doc
... 1995. Standards for 3G wireless services were published in 1999. Support for high-speed data at rates from 144 kb/s for urban and suburban outdoor envi- ronments to 2,048 Mb/s for indoor or low-range ... Statistical Model for a Land Mobile Satellite Link,” IEEE Trans. Veh. Tech., Vol. VT-34, No. 3, August 1985, pp. 122 — 127. [16] G.E. Corazza, et al., “A Statistical Model for Land Mobile Satellite ... Diversity Techniques for Reduction of Fast Fading in UHF Mobile Radio Systems,” IEEE Trans. Veh. Tech., Vol. VT-20, No. 4, November 1971, pp. 81 — 92. [22] M. Hata, “Empirical Formula for Propagation...
Ngày tải lên: 18/06/2014, 10:05
McGraw Hill - 2002 - W-CDMA and cdma2000 for 3G Mobile Networks_3 doc
... is a sequence of k information bits for which the receiver performance is optimum, then that sequence will be the first k information bits of a sequence that optimize the performance at any later ... codes. Walsh Codes Various physical channels may exist at any time on a radio interface of a 3G system. For example, at a mobile station, there may be one or more dedicated physical data channels, a dedicated ... codes to spread forward physical channels. For example, Walsh code 0 is assigned to the pilot channel, code 32 to the sync channel, codes 1 — 7 to paging channels, and the rest to the forward traffic...
Ngày tải lên: 18/06/2014, 10:05
McGraw Hill - 2002 - W-CDMA and cdma2000 for 3G Mobile Networks_4 ppt
... metric for a path. In this way, the branch metrics for all paths of the trellis diagram are computed. For an encoder with m registers, the number of states for the trel- lis diagram is 2 mϪ1 . For ... on the forward channel Chapter 4 132 The idea behind soft handoffs is rather simple. Each mobile sta- tion searches for sufficiently strong pilots that are not associated with any of the forward ... allocation is 50 MHz for cellular systems and 120 MHz for Personal Communications Services (PCS). The spectrum is divided into a number of bands as shown in the fig- Chapter 4 122 Mobile Radio Systems,”...
Ngày tải lên: 18/06/2014, 10:05
McGraw Hill - 2002 - W-CDMA and cdma2000 for 3G Mobile Networks_5 potx
... improvement in the bit error rate performance is significantly greater for a 5 MHz system than for 1.25 MHz. Because the chip rate is three times as high as in IS-95, for a given power delay profile, ... Stack cdma2000 takes the information — user data and signaling — from the higher layers and adds two lower-layer protocols before trans- Chapter 4 140 foreign serving area informs the HLR of the home ... a mobile travels into a foreign serving area, the VLR of the visited system requests the database of that mobile from its HLR and saves it in its memory so that it can continue to serve that mobile...
Ngày tải lên: 18/06/2014, 10:05
McGraw Hill - 2002 - W-CDMA and cdma2000 for 3G Mobile Networks_6 pdf
... routing information of all mobile stations attached to it and forwards an incoming packet appropriately en route to its destination. It may request information from an HLR or provide information ... perform signaling and control for non-GPRS services. For example, it can support short messaging service over a GPRS radio channel and efficiently process paging messages and mobile location information ... Institute (ETSI)/Special Mobile Group (SMG) developed two standards for International Mobile Telecommunication in the year 2000 (IMT-2000). One of them is the Universal Mobile Telecommunications...
Ngày tải lên: 18/06/2014, 10:05
McGraw Hill - 2002 - W-CDMA and cdma2000 for 3G Mobile Networks_7 potx
... transparently by the BMC. As for other functions per- formed, this entity on the network side periodically estimates the volume of the cell broadcast traffic and forwards the information to the RRC layer ... performed periodically, or on demand, or may be triggered by some events (for example, the current CCPCH is no longer the best one). They are evaluated and filtered at different layers before ... the transparent PDU does not contain any header, the RLC PDU has the same format as the higher-layer PDU. The PDU format for the unacknowledged mode is shown in Figure 6-27. The sequence number...
Ngày tải lên: 18/06/2014, 10:05
McGraw Hill - 2002 - W-CDMA and cdma2000 for 3G Mobile Networks_8 potx
... the network for the first generation systems that support only voice and no data. This reference model is similar to the GSM architecture. The mobile switching center (MSC) performs mobile switching functions ... protocol that specifies the frame format, functions, and proce- dures for transferring user part information over a signaling data link. MTP Level 3 provides for the distribution and routing of ... possibility for 3G networks, particularly if it can be designed to support delay-sensitive real-time applications. In fact, ETSI is defining a standard adopting an all-IP architecture to deliver 3G mobile...
Ngày tải lên: 18/06/2014, 10:05
McGraw Hill - 2002 - W-CDMA and cdma2000 for 3G Mobile Networks_9 pptx
... packets the highest priority and there- fore forward them first. Another traffic class may be such that associated packets can wait a while before they are forwarded to the next hop, but in the ... schemes. Furthermore, each packet may be treated differently for forwarding purposes. For example, packets with the same destination address may be forwarded along different routes at different instants ... (referred to in the RFC as a behavior aggregate) should be treated for forwarding purposes on a per-hop basis. The forwarding treatment for a group of packets in the DiffServ model is termed the Per-Hop...
Ngày tải lên: 18/06/2014, 10:05
McGraw Hill - 2002 - W-CDMA and cdma2000 for 3G Mobile Networks_10 pdf
... suggested another protocol called Mobile IP with Location Register (MIP-LR) for mobile wireless networks. According to this protocol, when a mobile station moves into a for- eign serving area, its ... are necessary for successful deployment of 3G and 4G ser- vices. There is, however, an economic perspective as well. For example, nearly one hundred billion dollars were spent for 3G licenses in ... 4G [2]–[5]. Driving Force Behind 4G The demand for mobile telephone services has been phenomenal. Since the introduction of cellular telephony in 1981, the annual growth in the number of mobile subscribers...
Ngày tải lên: 18/06/2014, 10:05
McGraw Hill - 2002 - W-CDMA and cdma2000 for 3G Mobile Networks_11 potx
... 49–50 mobile radio signals, 28 mobile stations, 3G systems, 20 mobile systems, 325–327 modulation, 79 BPSK, 80 DQPSK, 111 MSK, 166–168 OQPSK, 111 QPSK, 80, 110 monitoring VC traffic, 318 MRSVP (Mobile ... Terminal Equipment TF Transport Format TFC Transport Format Combination TFCI Transport Format Combination Indicator TFCS Transport Format Combination Set TFI Transport Format Indicator; Temporary ... 314 microcells, 19 MIP-LR (Mobile IP with Location Register), 328 MJ mobile system, 2 MK system, 3 MM (Mobility Management), 278 mobile phone systems, early models, 2–3 mobile radio channels large-scale...
Ngày tải lên: 18/06/2014, 10:05
