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Cellphones and Digital Networks

When analyzing the importance of digital networks for modern cell phones, it’s worth mentioning that the first digital devices of this kind were powered by 2G cellular technology. Besides, all digital phones use the same radio advancements as the analog ones, but in a different way. Analog systems don’t use a signal between a particular cellular network and a phone in full. The main reason is that analog signals can’t be manipulated and compressed as easily as the digital ones, and that’s why cable companies chose digital too.

Digital cell phones convert people’s voice into specific binary data before compressing it. This process allows between 3-10 digital cell phone calls to occupy a space of 1 analog phone call. Nowadays, there are many digital cellular systems that rely on FSK when sending their data back and forth. This technology uses 2 frequencies and fast alternates between them sending information between cell phones and towers.

Advances encoding and modulation schemes are necessary to convert analog data into digital before compressing and converting back again. Another important factors us that they need to maintain an acceptable voice level quality. All the above-mentioned details mean that the cell phones dependent on digital networks require a lot of processing power.

Cell phones are some of the most complex gadgets used by people on a regular basis. Modern types process a big number of calculations per 1 second to both compress and decompress a voice stream. After taking any standard digital cell phone apart, you will understand that it contains only a few basic elements, including:

  • An antenna and LCD;
  • A circuit board that contains its brain;
  • A battery and a speaker;
  • A microphone and a keyboard.

For example, a circuit board is the heart of all digital cell phones. A digital signal processor is a customized part created to perform all kinds of signal-manipulation calculations very fast. A microprocessor deals with a number of housekeeping chores for a display and a keyboard. It also handles control and command signaling with a base station while coordinating other important board functions. Flash memory chips and ROM offer enough storage for the operating system and a range of customizable features, including a cell phone directory. This digital technology was hard to imagine only 30 years ago.

When analyzing the importance of digital networks for modern cell phones, it’s worth mentioning that the first digital devices of this kind were powered by 2G cellular technology. Besides, all digital phones use the same radio advancements as the analog ones, but in a different way. Analog systems don’t use a signal between a particular cellular network and a phone in full.

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Assignment ID
100005500
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CREATED ON
1 August 2017
COMPLETED ON
2 August 2017
Price
$28
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