Waiting for a flight at the airport. Time on my hands, I try out a feature included with the Android operating system on my new Samsung Galaxy: create an 802.11g Wireless LAN (WiFi) base station on the phone.
This WiFi network is automatically bridged inside the phone to the Internet connection provided by the cellular carrier.
Easy step-by-step instructions were included on the setup screen.
Fired up my laptop and found the WiFi network and connected no problem.
In fact, I sent a post to Google’s servers over the very link!
Ain’t technology wonderful.
Bonus: your car can now be a WiFi hotspot! You could even get a WiFi hotsopt logo sticker and put it on your back window, like Greyhound… On a long car trip with my family, all of whom have WiFi enabled iPhones, iPods, DSs etc. etc., I can tell them the WiFi password, and they can share my internet connection.
Double bonus: If the kids start squabbling, I can threaten to turn it off!
btw, I have 6 GB/month in my plan, so not so worried about usage-based pricing for the connection. Best check your billing plan before trying it.
We’re pleased to announce the release of another online course: Wireless Telecommunications.
In this course, we cover wireless, concentrating mostly on mobile communications.
We’ll cover the principles of operation, jargon and buzzwords in the mobility business, the idea behind cellular radio systems, and explain the different spectrum-sharing technologies, including 1G analog FDMA, 2G TDMA/GSM vs. CDMA, 3G 1X vs. UMTS CDMA and 4G OFDMA.
We’ll conclude with a lesson on 802.11 wireless LANs (Wi-Fi) and a lesson on satellite communications.
Lessons in this module
1. Module Introduction – Wireless Communications
watch intro now (free)
2. Mobile Network Components, Jargon and Basic Operation
3. Cellular Principles and AMPS (1G)
4. 2G: Digital Radio – Voice Communications
5. Digital Cellular: Data Communications
6. Spectrum-Sharing Technologies: FDMA, TDMA, CDMA, OFDM
7. 3G Cellular: CDMA watch now (free)
8. 4G Mobile Cellular: LTE
9. 802.11 Wireless LANs – WiFi
10. Communication Satellites
This tutorial is part of the most recent update to Course 101, Chapter 6, October 2008.
After more than 20 years, it appears that an almost universally-accepted standard for mobile radio may finally be implemented, bringing to an end the standards war between carriers that deployed TDMA/GSM for second generation and carriers that deployed CDMA for second generation. Those two factions continued the standards war for the third generation (UMTS and 1X respectively); but now carriers from both of the factions are supporting the GSM/UMTS faction’s Third Generation Partnership Project (3GPP) release 8, known as Universal Terrestrial Radio Access Network Long Term Evolution (LTE). Continue reading “4G Cellular, OFDM and LTE – the "GSM vs. CDMA" Standards War Ends!”