Introduction coding theory is one of the most important and direct applications of information theory it can be subdivided into source coding theory and channel coding theory using a statistical description for data information theory quantifies the number of bits needed to describe the data which is the information entropy of the source coding theory sometimes called algebraic coding . Introduction to error control coding jay m jacobsmeyer pe pericle communications company1 abstract this paper is an introduction to the subject of error control coding the usual mathematical approach is bypassed to appeal to a wider audience the operation proper use and limitations of error control codes are described several coding techniques are investigated and the popular compact . In 1970 the first author published a book entitled an introduction to error correcting codes which presented the fundamentals of the previous two decades of work covering both block and convolutional codes the approach was to explain the material in an easily understood manner with a minimum of mathematical rigor. Introduction this chapter is about guarding against errors in data in its many different forms data stored on a hard drive cd floppy disk or solid state drive such as that inside a cellphone camera or mp3 player data currently in ram particularly on servers where the data correctness is critical data going between the ram and hard drive or between an external hard drive and the . Coding in this case refers to systematically introducing redundancy in a message prior to transmission and using this redundancy to recover the original message from the erroneously received one there are two basic types of error control codes block codes and convolutional codes
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