W-CDMA and cdma2000 for 3G Mobile Networks docx

... was similar to cdma2000, and the other was similar to the ETSI/ARIB proposal. Thus, eventually, there were only 4 systems for 3G mobile com- munications — cdma2000, UWC-136, W-CDMA UMTS FDD, and W- CDMA ... since 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- ronme...

Ngày tải lên: 02/03/2013, 16:58

... diffraction. As such, the signal received by a mobile may also include the refracted and diffracted rays. W-CDMA and cdma2000 for 3G Mobile Networks M.R. Karim and M. Sarraf McGraw-Hill New York Chicago ... frequency modulation is used for analog voice and FSK for signaling and con- trol data. The bandwidth of each channel allocated to an individual 23 Introduction...

Ngày tải lên: 27/06/2014, 15:20

... 1 Speech Signal Analog, 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 ... frequency modulation is used for analog voice and FSK for signaling and con- trol data. The bandwidth of each channel allocated to an individual 23 Introduction W-CDMA (UTR...

Ngày tải lên: 23/12/2013, 01:17

... 283 auto-correlation, PN codes, 86 B background 3G traffic, 304 bandwidth cdma2000, 138 cellular systems, 4 INDEX Copyright 2002 M.R. Karim and Lucent Technologies. Click Here for Terms of Use. CPCH Common Packet ... Terminal Equipment TF Transport Format TFC Transport Format Combination TFCI Transport Format Combination Indicator TFCS Transport Format Combination Set TFI Transport For...

Ngày tải lên: 18/06/2014, 16:20

... 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 bandwidth of 30 kHz and ... since 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,...

Ngày tải lên: 18/06/2014, 10:05

... However, standards currently specify N ϭ 1 and 3 only. Subsequences (shown as A 1 , A 2 , . . .) are multiplexed with the power control bits, converted into a parallel form, and then split into I and ... has a constraint length 9 and rate 1 / 2 . Spreading In UMTS and cdma2000, signaling and user data is spread twice in succession — first with the channelization codes and late...

Ngày tải lên: 18/06/2014, 10:05

... a set of standards for third-generation (3G) wireless systems [1], [2], [5], [7]. These systems include cdma2000, Universal Mobile Telecommunica- tions System (UMTS) Wideband CDMA (W-CDMA) FDD, ... step for sequential decoding, P1R 0 X2 is maximum. 107 Principles of Wideband CDMA (W-CDMA) cdmaOne and cdma2000 CHAPTER 4 4 Copyright 2002 M.R. Karim and Lucent Technologies. Click H...

Ngày tải lên: 18/06/2014, 10:05

... Protocol 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 ... IS-95 CDMA and cdma2000. 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 a sepa...

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 1 227 Universal Mobile Telecommunications ... the most common protocols for data services are IPv4 and IPv6 at the network layer and TCP and User Datagram Protocol (UDP) at the transport layer. Because new servi...

Ngày tải lên: 18/06/2014, 10:05