Tutorial: CDMA

Set to HD and full screen for best quality. This free online wireless cellular training course lesson is from TCO CWA Course 2232 Mobile Communications, Lesson 7.
https://www.teracomtraining.com/online-courses.htm#2232

In this lesson, we cover 3G mobile cellular radio technologies. While all new builds are 4G LTE and 5G New Radio, there are still many 3G CDMA systems in operation. This lesson has been retained in the CWA Course 2232, but dropped from the shorter CTNS Course 2206.

Course 2232 Mobile Communications is the second course in the CWA Certification Package. Topics: Cellular Principles • Mobility • Handoffs • PSTN Phone Calls • Mobile Internet • FDMA, TDMA, CDMA, OFDM • GSM, UMTS, HSPA • LTE and OFDMA • 5G New Radio • mmWave • IoT

Course Description
With a good foundation in place, we'll cover mobile communications from A to Z. This is where the money is!

We begin with basic mobile network concepts and mobility terminology including base stations and transceivers, mobile switches and backhaul, handoffs and cellular radio concepts.

You’ll learn how voice calls using a PSTN phone number are connected from a mobile network to a landline network, and how and where the mobile operator connects to the Internet for mobile Internet service.

We’ll review tethered modems, and connecting nearby devices to the Internet by bridging a smartphone’s mobile Internet service to its Wi-Fi hotspot capability.

We’ll explain the different spectrum-sharing technologies and their variations: FDMA, TDMA, CDMA and OFDM, and installed-base technologies GSM, UMTS, HSPA.

Then we’ll concentrate on LTE, LTE-Advanced and 5G New Radio, including millimeter-wave ultra broadband and low bitrates for IoT devices.

Course Lessons

1. Mobile Network Components and Operation
2. Cellular Principles
3. Frequency-Division Multiple Access
4. PSTN Calls Using the Native Phone App: "Voice Minutes"
5. Mobile Internet: "Data Plan"
6. TDMA (GSM): Time-Division Multiple Access
7. CDMA: Code-Division Multiple Access
8. Spread Spectrum
9. CDMA Operation and Patents
10. 3G: CDMA 1X, UMTS and HSPA
11. Spectrum-Sharing Roundup: FDMA, TDMA, CDMA, OFDM
12. 4G LTE: Mobile Broadband
13. OFDM
14. Dynamic Assignment of Subcarriers
15. 5G NR: Enhanced Mobile Broadband, IoT Communications

On completion of this course, you will be able to
- Draw a model of a cellular wireless telecommunications network
- Identify all of its components and technologies from handset to mobile switch
- Explain what "cellular" radio systems are is and why they are used
- Explain what a handoff is, and how this implements mobility
- Explain the characteristics and operation of FDMA, TDMA, CDMA and OFDM
- Which technologies and generations each is associated with
- Explain the difference between what mobile operators call "voice minutes" and "data plan"
- Explain mobile internet access via cellular, tethered modems and mobile Wi-Fi hotspots
- Define OFDMA and how it is used in LTE and 5G
- Outline the use cases for 5G and the expected bit rates
- Differentiate between 5G low bitrate, long reach for IoT vs. 5G ultra-broadband, short reach for VR

https://www.teracomtraining.com/online-courses-certification/certified-wireless-analyst-cwa.htm