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Like Analog, the term digital
has many meanings in the context of wireless technology.
Digital communication refers to any communication in a modulation
format that relies on some type of data format for transmission.
More specifically, digital communication refers to the process
whereby the sending location digitizes the voice communication and
then modulates it. At the receiver, the exact opposite is done.
Why use digital?
This is a question that many operators, new and current, have had
to wrestle with. Digital radio technology is deployed in cellular
and PCS or SMR systems primarily to increase the quality and
capacity of the wireless system over its analog counterpart.
The use of digital technology is mean to take advantage of many
features and techniques that are currently not obtainable for analog
cellular communication. Several competing digital technologies are
presently being used, and each has advantages and disadvantages in
particular applications. The major benefits associated with using
digital radio for a cellular or PCS environment are the following:
- Increased capacity
- Reduced capital infrastructure costs
- Reduced capital-per-subscriber cost
- Reduced cellular fraud
- Improved features
- Improvement customer experience
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