What do you mean by co-channel interference and system capacity?
Co channel interference is the interference between two access points(APs) or base stations operating at the same frequency. It can severely degrade the performance of wireless LANs. There can be several reasons of co-channel interference:
1)adverse weather condition
2) poor frequency planning
3) overly crowded radio spectrum
System capacity is the tight upper bound on the rate at which information can be reliably transmitted over a communications channel. The system capacity of a given channel is the limiting information rate that can be achieved with arbitrarily small error probability.
According to Shanon-Hartley theorem, the capacity of the system C is given by:
Where, B is the bandwidth of the channel
S/N is the signal to noise ratio.
Describe the architecture of a 3G network. What are the various services associated with a 3G network?
What is meant by access control? What are the contention-based and contention free access control mechanisms?
Write a C program to print pattern below:
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* *
* * *
* * * *
Describe various actions of a shift reduce parsers.
Write a C program to convert Centigrade temp into Farenhite temp.
What is feasibility study? Explain different types of feasibility study.
What is Risk? Why Risk Analysis is done?
What is a minimum spanning tree ? Describe Huffman’s Algorithm.
Why Required of ISO 9001:2000 standard?
