Archive for the tag 'phones'
Let’s Know About 3G
3G stands for “third generation” — this makes analog cellular technology generation one and digital/PCS generation two. 3G technology is intended for the true multimedia cell phone — typically called smartphones — and features increased bandwidth and transfer rates to accommodate Web-based applications and phone-based audio and video files. 3G comprises several cellular access technologies. [...]
Posted in category: Gadget and Smart Phone, lets know
January 9, 2012 by admin with Comments (0)
Tags: lets know, phones
Let’s Know Cell Phone Network Technologies: 2G (Part 2)
Ok.. This Article is rest of Cell Pohone Network Technologies: 2G (Part1) TDMA TDMA is the access method used by the Electronics Industry Alliance and the Telecommunications Industry Association for Interim Standard 54 (IS-54) and Interim Standard 136 (IS-136). Using TDMA, a narrow band that is 30 kHz wide and 6.7 milliseconds long is split [...]
Posted in category: Gadget and Smart Phone, lets know
January 8, 2012 by admin with Comments (0)
Tags: phones
Let’s Know Cell Phone Network Technologies: 2G (Part 1)
There are 3 common technologies used by 2G cell-phone networks for transmitting information (we’ll discuss 3G technologies in the next article): Frequency division multiple access (FDMA) Time division multiple access (TDMA) Code division multiple access (CDMA) Although these technologies sound very intimidating, you can get a good sense of how they work just by breaking [...]
Posted in category: Gadget and Smart Phone, lets know
by admin with Comments (1)
Tags: phones
Let’s Know about Cell Phones Frequencies
In the dark ages before cell phones, people who really needed mobile-communications ability installed radio telephones in their cars. In the radio-telephone system, there was one central antenna tower per city, and perhaps 25 channels available on that tower. This central antenna meant that the phone in your car needed a powerful transmitter — big [...]
Posted in category: Gadget and Smart Phone, Technology
January 7, 2012 by admin with Comments (0)
Tags: lets know, phones
