'Code division multiple access' presentation slideshows

Mobile Commerce in Taiwan and China

Mobile Commerce in Taiwan and China. Professor Eldon Li September 2004. Mobile Commerce Categories. Mobile Communication. Mobile Entertainment. Mobile Transaction. Mobile Information. Cell phone. Music. Payment. Financial Info. SMS. Image. Shopping. LBS. Games.

1.06k views • 67 slides

Digital Communication Lecture-1, Prof. Dr. Habibullah Jamal

2.18k views • 63 slides

Digital Communication Lecture-1, Prof. Dr. Habibullah Jamal

1.1k views • 63 slides

Wireless

Wireless Presented by John E. Janes What is wireless? Anything without wires!! Common Uses Cellular phones and pagers -- provide connectivity for portable and mobile applications, both personal and business

915 views • 51 slides

Chapter 9

Chapter 9. Mobile Commerce and Pervasive Computing. Learning Objectives. Define mobile commerce and understand its relationship to e-commerce. Understand the mobile computing environment that supports m-commerce. Describe the four major types of wireless telecommunications networks.

1.15k views • 50 slides

752 views • 48 slides

ECE 4331, Fall, 2009

ECE 4331, Fall, 2009. Zhu Han Department of Electrical and Computer Engineering Class 26 Nov. 19 th , 2009. Outline. Term paper, only journal. For those who did not give me the title on time, I think you would not work for the term project, right? ? General Wireless System Architecture

642 views • 45 slides

Chapter 6: Fundamental Laptops and Portable Devices

Chapter 6: Fundamental Laptops and Portable Devices. IT Essentials: PC Hardware and Software v4.1. Chapter 6 Objectives. 6.1 Describe laptops and other portable devices 6.2 Identify and describe the components of a laptop 6.3 Compare and contrast desktop and laptop components

686 views • 43 slides

Cellular Communications

Cellular Communications. 4. Modulation. Modulation. Radio signals can be used to carry information Audio, data, video Information is used to modify (modulate) a single frequency known as carrier Modified(modulated) signal is transmitted to receiver

813 views • 42 slides

Wireless Technologies

598 views • 35 slides

PORTABILITY AND CONNECTIVITY

PORTABILITY AND CONNECTIVITY. EMERGING TECHNOLOGIES COMMITTEE DECEMBER 7, 2001 Irwin Winsten, CPA, Frank DeCandido, CPA, Steve Davis, Aether Systems. PORTABILITY AND CONNECTIVITY. Table of Contents. Content Page # History of Communications 3 - 7 Connectivity

405 views • 31 slides

S-72.227 Digital Communication Systems

S-72.227 Digital Communication Systems. Spread spectrum and Code Division Multiple Access (CDMA) communications. Spread Spectrum Communications - Agenda Today. Basic principles and block diagrams of spread spectrum communication systems Characterizing concepts

737 views • 30 slides

Lecture 8: Introduction to UMTS

Lecture 8: Introduction to UMTS . July 6, 2008. 896960 Introduction to Algorithmic Wireless Communications. David Amzallag david.amzallag@bt.com www.cs.technion.ac.il/~amzallag/awc. Multiple access revisited. Multiple users want to communicate in a common geographic area.

478 views • 30 slides

Wireless Communications

Wireless Communications. Understanding Radio Frequency Communications. Objectives. List the components of a radio system Describe how different factors affect the design of a radio system Explain the radio frequency spectrum . Components of a Radio System. Components include: Filters

841 views • 30 slides

WiMAX @ UNE

WiMAX @ UNE. E11_A3 - Arts Lecture Theatre 3 from 1 to 2pm on Friday 29th February 2009 by Dr. Charles R. Watson School of Science & Technology University of New England, Armidale NSW 2351 URL: http://mcs.une.edu.au/~cwatson7/I/WiMAX.ppt. Overview.

561 views • 29 slides

GSM Security Overview (Part 1)

402 views • 22 slides

Cellular Communication

Cellular Communication ECE 457 Spring 2005 Cellular Phone System The cellular phone service area is divided into smaller geographical areas called cells. Cellular phone system Each cell has a base station with a tower which receives and transmits signals.

1.05k views • 16 slides

Ing. Raul Bruzzone

Third Generation Mobile Communication Systems Ing. Raul Bruzzone ORT University Montevideo - URUGUAY Who is participating in this Course? The participants of the Course are kindly invited to introduce themselves, expressing: Name Company, Academic Organization or Institution Department

721 views • 16 slides

Chapter 6 Wireless and Mobile Networks

Chapter 6 Wireless and Mobile Networks. Computer Networking: A Top Down Approach Featuring the Internet , 3 rd edition. Jim Kurose, Keith Ross Addison-Wesley, July 2004. . Background: # wireless (mobile) phone subscribers now exceeds # wired phone subscribers!

347 views • 14 slides

Qualcomm

Qualcomm. CDMA Technology. What is CDMA?. Code Division Multiple Access As opposed to TDMA (time-division) Strives to better utilize the radio spectrum by allowing multiple users to share the same physical channel

495 views • 6 slides