Image Transmission Using Arithmetic Coding Based Continuous Error Detection

z TRW Abstract Block Cyclic Redundancy Check (CRC) codes represent a popular and powerful class of error detection techniques in modern data communication systems. Though eecient, CRC's can detect errors only after an entire block of data has been received and processed. In this work, we propose a new \continuous" error detection scheme using arithmetic coding that provides a novel tradeoo between the amount of added redundancy and the amount of time needed to detect an error once it occurs. We demonstrate how the new error detection framework improves the overall performance of transmission systems, and show how sizeable performance gains can be attained. We focus on two popular scenarios: (i) Automatic Repeat ReQuest (ARQ) based transmission; and (ii) Forward Error Correction frameworks based on (serially) concatenated coding systems involving an inner error-correction code and an outer error-detection code.