Wireless Technology Training Courses > Down Load Channels and Modes

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Down Load Channels and Modes

When downlinks are setup to transfer data there is spreading and modulation of the channels. You will learn in this online course how downlinking works. Key topics include: the frame structure of D/L dedicated channels, D/L in FDD mode, D/L in TDD mode, channelization codes, scrambling codes, primary and secondary synchronization codes, the broadcast channel and the pilot signal. How to purchase. You can start this web-based course today!

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Key Objectives Taught in the Course

This content is a portion of the WCDMA Fundamentals course curriculum.
  • Module introduction.
  • Describe the frame structure of D/L dedicated channels.
  • Describe the D/L FDD mode.
  • Describe the D/L TDD mode.
  • List the codes used in D/L.
  • Describe the structure of "Channelization codes".
  • Define orthogonal codes.
  • Define variable spreading factor.
  • Explain why Channelization codes in WCDMA should be orthogonal.
  • Explain how orthogonal codes could be used in variable spreading factor mode.
  • Identify any restrictions on using specific Channelization codes in a cell.
  • Describe D/L 'Scrambling codes'.
  • Explain the role of the D/L scrambling code in the identification of the cell.
  • Describe the structure of the D/L scrambling codes.
  • Explain the importance of the Broadcast Channel (BCCH).
  • Describe the spreading and modulation of the BCCH.
  • Describe the function of Synchronization codes.
  • Describe the function of the Primary Synchronization channel (P-SCH).
  • Describe the function of the Secondary Synchronization channel (S-SCH).
  • Outline the cell search procedure.
  • Explain how the time slot is identified.
  • Explain how the cell is identified.
  • Describe the physical dedicated channels.
  • Describe the conditions for multi channel operation.
  • Explain the purpose the pilot signal to each channel.
You may want to check out the multi-user course license solutions we offer to corporations and universities that need to train 100 or more people.

Target Audience

Product line management, system design, system testing, system architects, and engineers.

Course Prerequisites

There is no prerequisite for this course.

Average Course Length

0.5 hour

Testing

Includes both pre-testing and post testing.

Online Content Index

Available

Begin Course

After your order is processed by the course administrator, you will receive an email which will contain your username, password and detailed information on how to begin your web-based course. You will be able to start the course(s) you have selected the same day you place your order.

Certificate of Completion    certificate

Certificate of Completion will be supplied upon request after you have completed the online course.

Author and Subject Matter Expert

The author and subject matter expert is Dr. Roshdy Hafez of Carleton University, Ottawa, Ontario. Dr Hafez holds a M.Sc. in Electrical Engineering from the University of Alexandria, Egypt (1974) and a Ph.D. (1978), also in Electrical Engineering, from Carleton University. In 1980, he joined the Department of Systems and Computer Engineering, Carleton University as an assistant professor. He became a full professor in 1989. Dr. Hafez has more than 20 years' experience in the areas of mobile communications and spectrum engineering. He has taught and lectured extensively in wireless and related areas. His current research focuses on CDMA-based wireless systems and adaptive signal processing. He has served as a consultant to government agencies and telecommunications companies including the Canadian Department of Communications (now Industry Canada), Nortel and Bell Mobility. Dr. Hafez has been actively involved in TRIO and CITR. Between 1994 and 1998, he was a TRIO project leader on CDMA PCS networks.

System Requirements
  • High speed Internet Connection (DSL, cable, ISDN 128)
  • Browser: Explorer 4.01 Service Pack 2 (or greater), or Netscape 4.7 (or greater). Explorer 5 is recommended
  • Flash 4 or greater plug-in
  • 16 bit colour, 800 x 600 resolution (minimum requirement)
  • Audio card (optional)
  • 200 megahertz minimum, 300 megahertz recommended
  • 32 RAM minimum, 64 RAM recommended
  • 50 mb of available disk cache space
Refund Policy

If this material does not meet your expectations as outlined in the course description, you have 3 working days from the date of registration to obtain a 100% refund of the course fee. Please contact us if you have any further questions regarding this guarantee. 

Multi-User Online Course License    students

As a solution for large volume users of this course we offer several plans that may be of interest to you. These solutions are designed for corporations and universities. A minimum number of students is required to make these solutions cost effective.

Sub-Domain:

Making access and use of courses fast and easy is paramount. By having us setup a sub-domain it makes it very easy to get your training program underway. When a company needs to train 100 or more people for a curriculum we offer to setup a sub-domain on our server at no extra charge. The advantages to this offer are numerous. We do the work and will even setup the student files so the student simply logs onto the Internet, uses an assigned UserID and Password and has the content available for learning or reference use right at their fingertips. Students may log in and out whenever they want. Access is based on a term, with 1 year the norm. Each student file is kept confidential.

Another key advantage is with the sub-domain we make available to the client the ability to edit the courses they have licensed. They may opt to remove certain content or add new content themselves from their computer as html, pdf, or swf files. The edit course software is fast and easy to use with no programming skills required. By customizing the course the content can be made to fit your company's exact needs. If you need an extra hand we are available to assist.

Corporate Server:

The fastest access of content is over a corporate Intranet. It also could be you would like to add content that you feel is proprietary and want the highest level of security possible, then licensing courses and software to run on your corporate server makes a lot of sense. Each course may be licensed or purchased, as well we offer licenses for our edit course feature within our TechEdge Web-Based engine for corporate users to edit licensed courses and to develop new ones yourself using programs like Microsoft Word, PowerPoint, or Flash. It is simple, fast and easy.

Here's the typical server requirement for a 50 concurrent user hosted connection:

NT 4/2000 Server
500mhz p2/p3/amd athlon
256 RAM (512 recommended)
IIS, PWS or compatable web server software
SQL or Access 2000 ODBC compliant database driver
Coldfusion Aplication Server 4.0 or higher  [ click here ]  for more info on coldfusion

Course Development:

There are many who would like to put content up on the Internet or on Corporate Intranets but either do not have the knowledge or the time to do it. To help we can offer onsite training, tools, and experience on how to do it in conjunction with licensing our software and courses. If you have a need for a course to be developed we also have that capability, demonstrated by the quality of the courses you see we offer, which are all made by our staff.

More Information:

If you are interested in any of the above multi-user solutions for this course, please contact us for more information and a quotation. You will be pleasantly surprised at how affordable these multi-user solutions really are!




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Down Load Channels and Modes