Abstract

For asynchronous transmission of serial data between a DTE (data terminal equipment) and a DCE (data communication equipment) a UART (universal asynchronous receiver/transmitter) is used. It is a serial communication protocol widely used for short-distance, low speed, low-cost full duplex data exchange between computer and an output device. In working environments employing multiprocessor communication such as industries, the received data may be erroneous due to noise. The consequences may be hazardous due to improper control. The present day UART are designed with an error detection logic which requests retransmission of data frame from the transmitter if any error is detected. This task demands extra time. In the proposed paper we have reviewed the various approaches made so far for detecting and correcting errors, and improving the noise immunity of the system in order to obtain an optimized error free reception of data.