NEW STOP & WAIT ARQ PROTOCOL

In all types of data communication systems, errors may occur. Therefore error control is necessary for reliable data communication. Error control involves both error detection and error correction. Previously error detection can be done by Cyclic Redundancy Check (CRC) codes and error correction can be performed by retransmitting the corrupted data block popularly known as Automatic Repeat Request (AR Q). But CRC codes can only detect errors after the entire block of data has been received and processed. In this work we use a new and “continuous” technique for error detection namely, Continuous Error Detection (CED). The “continuous ” nature of error detection comes from using arithmetic coding. This CED technique improves the overall performance of communication systems because it can detect errors while t he data block is being processed. We focus only on ARQ based transmission systems. We will show have the proposed CED technique can improve the throughput of ARQ systems by up to 15%