Introduction.
A part of a communication system is composed of a discrete source generator, a source encoder and a noisy channel.
Description of components.v
Source.
This is a discrete source that generates three symbols A, B, and C contiguously.
A sample of 1000 symbols was taken over a period of 1000 s and the following noted during this period:
symbol A occurred 600 times.
symbol B occurred 300 times.
symbol C occurred 100 times.
Source encoder.
This source encodes the symbols using Huffman encoding or block to block encoding.
Modulator.
Here the source encoded symbols are turned into binary symbols using 5V unipolar non return to zero rectangular pulses (TTL) and then sent over the channel.
Channel.
The channel is a binary symmetric channel is linear, has infinite bandwidth and adds noise. During tests on the channel binary data was transmitted at 1 Mbit/s for 1 hour where it was found that 1.8108 bits were incorrectly received.
Describe this system.
2007-03-01
06:39:58
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