Signal and Bandwidh

In terms of channel bandwidth cost, communication cost is controlled by government's rules and regulations. But a researcher can make an effort to reduce the effective communication cost by reducing signal bandwidth. If signal bandwidth is reduced by any algorithm then more numbers of communication signals can be transmitted over the same channel with rated bandwidth cost. Larger the number of communication carrier signal transmitted bandwidth cost will be distributed over all communication carrier signals, effectively reducing the communication cost.

Signal bandwidth can be reduced either by compressing data signal or by effective channel coding reducing the number of data bits with information signals. Thus to reduce the signal bandwidth, a engineer can work either in the area of source coding or in the area of channel coding where effective coding can reduce the signal bandwidth through the communication channels. 

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