Error detecting and error correcting codes
Abstract
In most communication system convolutional encoders are used and AWGN introduces errors during transmission. In this paper all error detecting and error correcting mechanisms are studied and best mechanism on the basis of accuracy, complexity and power consumption is selected. Error detection and correction mechanisms are vital and numerous techniques exist for reducing the effect of bit - errors and trying to ensure that the receiver eventually gets an error free version of the packet. In order to protect memories against MCUs as well as SEUs is to make use of advanced Error detecting and correcting codes that can correct more than one error per word. There should be tradeoff between complexity of hardware and power consumption in decoder. Index Term:- Error correcting codes, error detecting codes, hamming codes, block codes INTRODUCTION: Error detection and correction mechanisms are vital and numerous techniques exist for reducing the effect of bit -errors and trying to ensure that the receiver eventually gets an error free version of the packet. The major techniques used are error detection with Automatic Repeat Request, Forward Error Correction and hybrid forms. Forward Error Correction is the method of transmitting error correction information along with the message. To prevent soft errors from causing data corruption, memories are typically protected with error correction codes. Error correcting codes (ECCs) are commonly used to protect against soft errors and thereby…
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