Chapter 6
Conclusion
It is well known that a communication system consists of two essential functional modules, the source codec and channel codec. These two modules are essentially concerned with data compression and transmission. In data compression, we strive to remove all the redundancy from the data to achieve a compressed representation of the data most close to the entropy of the source.
On the other hand, in data transmission, we intentionally add redundancy into data in a controlled fashion to combat channel noise. Therefore, joint source-channel coding may improve end-to-end system performance. More importantly, the optimum performance of joint source channel coding could be applied to practical contexts such as voice, image and video communication systems. It will be possible to transmit data with sufficient bitrate with lower error performance and minimum power by optimum performance of joint source channel coding.