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three times wider coverage, 40 times capacity, and "CD" quality sound. For example, the 13 kbps vocoder provides better
sound quality, but reduces system capacity as compared to an 8 kbps vocoder.
CDMA Benefits
When implemented in a cellular telephone system, CDMA technology offers numerous benefits to the cellular operators and their
subscribers. The following is an overview of the benefits of CDMA. 1.Capacity increases of 8 to 10 times that of an AMPS
analog system and 4 to 5 times that of a GSM system 2.Improved call quality, with better and more consistent sound as
compared to AMPS systems 3.Simplified system planning through the use of the same frequency in every sector of every cell
4.Enhanced privacy 5.Improved coverage characteristics, allowing for the possibility of fewer cell sites 6.Increased talk time for
portables 7.Bandwidth on demand
Click below for more information about:
Spread Spectrum Techniques
Spreading Codes
Power Control
Handoff
Forward CDMA Channel
Frequency Plans
Walsh Functions
Short Code
Reverse CDMA Channel
Long Code
Long Code Mask
Reverse Spreading
Linear Feedback Shift Registers
System Time
Forward Spreading
Coverage-Capacity Tradeoff in the Reverse Link
Spreading Bandwidth
Optimum Bandwidth for CDMA
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