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JOURNALS || EIJO Journal of Engineering, Technology and Innovative Research (EIJO – JETIR) [ ISSN : 2455 - 9172 ]
Review of Turbo Decoder Using Log-MAP Based Iterative Decoding Algorithm
Author Names : Indu, Vikram Singh
volume 1 issue 2
Abstract
In digital communication the error correction capability is better as compared to analog communication. When in digital transmission system bits get corrupted, then error occurs. For improving the error correction capability, turbo codes are used. Turbo codes are the parallel concatenation of two convolutional codes. For that purpose an interleaver is used which separates the code. In digital communication system, the use of turbo codes enhances the data transmission efficiency. When turbo codes are used then Bit Error Rate (BER) performance reaches the Shannon’s channel capacity limit. The most popular iterative decoding algorithm requires an exponential increase in hardware complexity to achieve higher decoding accuracy. In this paper Log-MAP Iterative decoding algorithm is used for describing turbo decoder.
Keywords: Convolutional Codes, Iterative Decoding, Turbo Codes, SISO Decoder.
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