Implementation of Error Correcting Codes for Low Area and Power Optimized Applications

Implementation of Error Correcting Codes for Low Area and Power Optimized Applications
Authors:SUNKARA KISHORE, G.SIVARAMAKRISHNA, K. CHINNAMALLA REDDY

Abstract: AS CMOS technology scales down to nano scale and memories are combined with an increasing number of electronic systems, the soft error rate in memory cells is rapidly increasing. Although single bit upset is a major concern about memory reliability, multiple cell upsets (MCUs) have become a serious reliability concern in some memory applications which requires error correction. In order to make memory cells as fault-tolerant as possible, some error correction codes (ECCs) have been widely used to protect memories. For example, the Bose Chaudhuri Hocquenghem codes, Reed–Solomon codes, and punctured difference set (PDS) codes have been used to deal with MCUs in memories. But these codes require more area, power overheads since the encoding and decoding circuits are more complex in these complicated codes. In this project due to introduction of butterfly-formed weight accumulator (BWA) block to enhance the performance with less power consumption is proposed for efficient error correction.

Keywords: Butterfly-Formed Weight Accumulator, Error-Correcting Codes, VERILOG, XILINX ISE.

                                                             INTRODUCTION


     Error detection and correction (EDAC) techniques are used to ensure that data is correct and has not been corrupted, either by hardware failures or by noise occurring during transmission or a data read operation from Memory. There are many different error correction codes in existence. The reason for the different codes being used in different applications has to do with the historical development of the data storage, the types of data errors occurring, and the overhead associated with each of the error detection techniques. The basic concept of error detection and correction method is as follow 1.Networks must be able to transfer data from one system to another without data can be corrupted during transmission. For reliable communication, errors must be detected and corrected. Any error-correcting code can be used for error detection and correction. Error-correcting code (ECC) or forward error correction (FEC) code is a system of adding redundant data, or parity data,


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