'Cdma' presentation slideshows

3G ??????

3G ??????. 3GPP ? 3GPP2 WiMAX. 3GPP ? 3GPP2. ???? ????? ???? ?????? ?????? ???? ????. ????. ????? ?????? ?????? 75 ?????? 5000 ??? ?????? 35 ?????? 5000 ??? ??? 13 ?????? 5000 ??? ??????? 12 ?????? 5000 ??? ???? 5 ?????? 5000 ??? 3G ? ? ?????? 5000 ???. 3G ??????????.

1.24k views • 90 slides

Outline

Outline. Wireless introduction Wireless cellular (GSM, CDMA, 3G, 4G) Wireless LANs, MAC layer Wireless Ad hoc networks routing: proactive routing, on-demand routing, scalable routing, geo-routing multicast TCP QoS, adaptive voice/video apps Sensor networks.

952 views • 66 slides

CDMA Solutions: Smart Antenna Technology

CDMA Solutions: Smart Antenna Technology. Wei-Chiang Wu. Multiple Access Techniques for Wireless Communication. Frequency Division Multiple Access (FDMA) Time Division Multiple Access (TDMA) Code Division Multiple Access (CDMA) Space Division Multiple Access (SDMA)

823 views • 53 slides

CDMA Theory Module

CDMA Theory Module. Unit 1 ?? CDMA Overview Unit 2 ?? CDMA Basic Principle Unit 3 ?? CDMA Channel Structure and Modulation Unit 4 ?? CDMA Key Technology. CDMA Theory Unit 1. CDMA Overview. Main Content.

799 views • 52 slides

CDMA Theory

CDMA Theory. CDMA Theory Unit 1. CDMA Basic Principle. Main Content. Definitions of CDMA and How to realize Spread spectrum modulation Spreading codes used in CDMA Vocoding in CDMA. Multiple Access.

1.19k views • 49 slides

CDMA Technologies for Cellular Phone System

CDMA Technologies for Cellular Phone System. July 7th, 2004 Takashi INOUE KDDI R&D Laboratories Inc. Contents. Introduction Spread Spectrum Technology DS-CDMA Spreading Codes Features of CDMA RAKE Receiver Power Control Frequency Allocation Soft Handoff Conclusion.

812 views • 48 slides

Mobile Communication Systems 2 MSc Data Comm

Mobile Communication Systems 2 MSc Data Comm. Rolando A Carrasco Professor in Mobile Communications BSc(Hons), PhD, CEng, FIEE r.carrasco@ncl.ac.uk School of Electrical, Electronic and Computing Engineering University of Newcastle upon tyne. PSTN, ISDN BISDN,. Fixed Networks. A. B.

591 views • 45 slides

Module-3 : Transmission Lecture-9 (18/5/00)

Module-3 : Transmission Lecture-9 (18/5/00). Marc Moonen Dept. E.E./ESAT, K.U.Leuven marc.moonen@esat.kuleuven.ac.be www.esat.kuleuven.ac.be/sista/~moonen/. Lecture 9 : CDMA -Overview. Multiple Access Techniques TDMA FDMA

582 views • 45 slides

SISTEMI DI RADIOCOMUNICAZIONE

SISTEMI DI RADIOCOMUNICAZIONE. MULTI-CARRIER CDMA DIGITAL COMMUNICATION SYSTEMS. Prof. C. Regazzoni. References. [1] N. Yee, J.P. Linnartz, “Multi-Carrier CDMA in an Indoor Wireless Radio Channel”, Tech. Rep. Of University of California at Berkeley, 1994.

512 views • 35 slides

Powering the Mobile Computer: CDMA and the 3G wireless revolution

Powering the Mobile Computer: CDMA and the 3G wireless revolution. Klein S. Gilhousen Senior Vice President QUALCOMM. Safe Harbor.

430 views • 33 slides

The Future of Mobile Broadband

The Future of Mobile Broadband. Cellular Subscriptions Subscriptions & Penetration per Region - End Q2, 2006E*. Japan (excl. PHS) 93 M, 73%. North America 240 M, 73%. Global users 2464 M, 38%. Asia Pacific 851 M, 24%. Latin America 275 M, 49%. Western Europe 423 M, 106%. Central &

499 views • 32 slides

TD-SCDMA and TD-SCDMA Forum

TD-SCDMA and TD-SCDMA Forum. Dr. Li Wan Lin Vice Chairman of TD-SCDMA Forum. What is TD-SCDMA ?. TD-SCDMA technology. Is a proven high efficient 3G air interface means a future proof road for the operator offers a smooth and cost efficient introduction

512 views • 31 slides

Mobile Multimedia Evolution from 2G to IMT-2000

Mobile Multimedia Evolution from 2G to IMT-2000. Raimundo Duarte Manager for Regulatory and Industry Affairs Nokia do Brasil Multimedia in 221 st Century - Porto Seguro, April, 6 th - 2001 raimundo.duarte@nokia.com. Agend a. Nokia's vision of the Mobile Information Society

387 views • 29 slides

CDMA Technology Overview

456 views • 22 slides

CDMA(IS 95) Mobile Station Call Processing

CDMA(IS 95) Mobile Station Call Processing. Lan Kai. Outline. Background Information Mobile Station Call Processing. Background Information. CDMA introduction CDMA channels CDMA protocol layer. Background Information CDMA Introduction. CDMA: Code Division Multiple Access

868 views • 21 slides

Multi carrier-CDMA

Multi carrier-CDMA. ???? : ??? ?? : ???. outline. Advantage of OFDM Disadvantage of OFDM Advantage of DS-CDMA Disadvantage of CDMA What is MC-CDMA Conclusion. Advantage of OFDM. OFDM is robust to frequency-selective fading.

415 views • 14 slides

Spread Spectrum Communications

323 views • 14 slides

DESIGN OF A SPECIFIC CDMA SYSTEM FOR AIR TRAFFIC CONTROL APPLICATIONS

UNIVERSIDAD POLITÉCNICA DE MADRID. UNIVERSIDAD DE LAS PALMAS DE GRAN CANARIA. DESIGN OF A SPECIFIC CDMA SYSTEM FOR AIR TRAFFIC CONTROL APPLICATIONS. Outline. 1.- Motivation and objectives 2.- Operational aspects 2.1.- Proposal for the TMA / taxiing scenarios: C band Duplex options

246 views • 13 slides

??? ???? ?????? ??????

??? ???? ?????? ??????. Classification of CDMA. CDMA. Hybrid CDMA. Pure CDMA. DS/FH. DS. FH. TH. MC-CDMA. DS/TH. TDMA/CDMA. FH/TH. MT-CDMA. DS/FH/TH. Fast. Slow. Narrow band. Wide band. Frequency. Frequency. Hopping. Hopping.

524 views • 9 slides

TD-SCDMA and TD-SCDMA Forum

TD-SCDMA and TD-SCDMA Forum. Dr. Li Wan Lin Vice Chairman of TD-SCDMA Forum. What is TD-SCDMA ?.

205 views • 3 slides