Development of IP Core for Viterbi Decoder Using VHDL

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Provided by: Creative Commons
Topic: Hardware
Format: PDF
Forward Error Correction (FEC) techniques are utilized for correction of errors at the receiver end. Convolutional encoding is an FEC technique that is particularly suited to a channel in which the transmitted signal is corrupted mainly by Additive White Gaussian Noise (AWGN). Viterbi algorithm is a well-known maximum-likelihood algorithm for decoding of Convolutional codes. They have rather good correcting capability and perform well even on very noisy channels. It has been widely deployed in many wireless communication systems to improve the limited capacity of the communication channels. Although widely-used, the most popular communications decoding algorithm, the Viterbi algorithm, requires an exponential increase in hardware complexity to achieve greater decode accuracy.
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