CDMA and cdma2000 for 3G Mobile Networks 7 doc

... Controls and Mobility Management 277 Protocol Stacks in Access and Core Networks 279 GSM 279 UMTS 282 Call Controls 291 Summary 295 References 296 Chapter 9 Quality of Service (QoS) in 3G Systems 2 97 Introduction ... Channels 169 GSM Frame and Slot Structure 171 Data Services in GSM 173 General Capabilities and Features of GPRS 174 GPRS Network Architecture 175 GPRS Proto...

Ngày tải lên: 23/12/2013, 01:17

... was similar to cdma2 000, and the other was similar to the ETSI/ARIB proposal. Thus, eventually, there were only 4 systems for 3G mobile com- munications — cdma2 000, UWC-136, W -CDMA UMTS FDD, and W- CDMA ... M.R. Karim and Lucent Technologies. Click Here for Terms of Use. For more information about this book, click here. Power Control 130 Handoff in IS-95 133 cdma2 000...

Ngày tải lên: 02/03/2013, 16:58

... spectrum allocation for UWC-136 is the same as for cdma2 000. The system features of UMTS and cdma2 000 are summarized in Table 1-5. Chapter 1 22 11 Or, if necessary, the bandwidth of a single ... standard IS-54, its newer version IS-136, and Global System for Mobile Communica- tions (GSM), are all based on TDMA and FDD. In IS-54 and IS-136, each voice channel has a bandwidt...

Ngày tải lên: 18/06/2014, 10:05

... Coding Convolutional Encoder In W -CDMA, user data and voice are encoded into convolutional codes before they are transmitted. These codes are different from 71 Principles of Wideband CDMA (W -CDMA) Speech Input Adaptive Codebook Fixed Codebook Gain Decoder X X + LP Synthesis Speech Analysis Perceptual Weighting Error Minimization Pitch, ... has a constraint length 9 and rate 1 / 2...

Ngày tải lên: 18/06/2014, 10:05

... step for sequential decoding, P1R 0 X2 is maximum. 1 07 Principles of Wideband CDMA (W -CDMA) cdmaOne and cdma2 000 CHAPTER 4 4 Copyright 2002 M.R. Karim and Lucent Technologies. Click Here for Terms ... set of standards for third-generation (3G) wireless systems [1], [2], [5], [7] . These systems include cdma2 000, Universal Mobile Telecommunica- tions System (UMTS) Wideban...

Ngày tải lên: 18/06/2014, 10:05

... 1995. [7] V.K. Garg, IS-95 CDMA and cdma2 000. New Jersey: Prentice Hall, 1999. Chapter 4 152 GSM System Features GSM operates in the frequency division duplex mode, using one band for uplinks and ... channels and the forward and reverse channel transmit functions. The distinctive features of a cdma2 000 system may be summa- rized as follows: ■ Wider bandwidth and higher chip...

Ngày tải lên: 18/06/2014, 10:05

... location and routing information of the mobile. In the STANDBY state, the mobile station is still GPRS-attached and sends the SGSN its location and routing information periodi- cally and each ... frequency bands, sep- arated by a guard band, are used — one for the uplink and the other for the downlink transmission. In TDD, on the other hand, the same frequency band is used...

Ngày tải lên: 18/06/2014, 10:05

... emanating from nodes C1 and C2, rows 1 and 3 representing codes at C1, and rows 2 and 4 at C2. a NϪ1 kϭ0 h ik h jk ϭ 0 for i  j H N ϭ 3h ij 4,i,j ϭ 0,1,2, p , N Ϫ 1 2 27 Universal Mobile Telecommunications ... 2 Octet 3 o o Figure 6- 27 The RLC PDU format for the unacknowledged mode as I and Q in the figure, are to be scrambled by a complex scrambling code, the I and Q se...

Ngày tải lên: 18/06/2014, 10:05

... Layer TCP/UDP Figure 7- 4 Protocol stacks at the reference point Um between a mobile station and a base station, and between IWF and PDN The signaling protocol for the interface between a base station and an ... following: ■ Mobiles must be able to roam seamlessly from an IP network to a 2G or 2Gϩ, GSM/GPRS network and to earlier versions of a 3G network, and vice versa. 2...

Ngày tải lên: 18/06/2014, 10:05

... routers [11], [16]. RSVP for Mobile Systems Problems arise when standard RSVP is used in a mobile communi- cations network. Reference [11] has studied these problems in detail, and also summarizes ... arrival process is purely random, it is often not easy to compute the required bandwidth for an arbitrary sustainable data rate, peak data rate, and the burst size except for very...

Ngày tải lên: 18/06/2014, 10:05