Question

What are the techniques used to expand the capacity of cellular system?

Answer 1

Techniques such as cell splitting, sectoring, and coverage zone approaches are used in practice to expand the capacity of cellular systems. Cell splitting allows an orderly growth of the cellular system. Sectoring uses directional antennas to further control the interference and frequency reuse of channels.

Answer 2

Cell Splitting, Sectoring, and Coverage Zone Approach are three techniques for increasing cell capacity in cellular systems.

What exactly is cellular network capacity expansion?

• For a given maximum outage probability, system capacity is formally defined as the maximum of the product of the number of users per cell times the user spectral efficiency.

• As demand and technology increase, capacity expansion techniques such as cell splitting or sectoring and the overlay of smaller cell clusters over larger clusters are used.
• A variety of techniques for mitigating interference in cellular networks have been proposed.
• Power control, effective frequency assignment using intelligent techniques, and intermodulation solutions are examples of common methods.
• Cell splitting increases the number of channels per unit area by decreasing the cell radius (R) while maintaining the co-channel reuse ratio (D/R ratio) unaffected (D is the co-channel separation distance).
• The maximum rate at which information can be transmitted through a channel is defined as the channel capacity, C.
• The fundamental theorem of information theory states that at any rate below channel capacity, an error control code with arbitrarily small error probability can be designed.

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