The Reliability in Decoding of Turbo Codes for Wireless Communications
Journal Title: International Journal of Modern Engineering Research (IJMER) - Year 2013, Vol 3, Issue 4
Abstract
Turbo codes are one of the most powerful types of error control codes and high performance forward error correction codes currently available. They will be used later in the thesis as powerful building blocks in our search for better bandwidth efficient code schemes. Turbo codes emerged in 1993 and have since become a popular area of communications research. This paper provides a description of three turbo codes algorithms. Soft-output Viterbi algorithm, logarithmicmaximum a posteriori turbo algorithm and maximum- logarithmic-maximum a posteriori turbo decoding algorithms are the three candidates for decoding turbo codes. Soft-input soft-output (SISO) turbo decoder based on soft-output Viterbi algorithm (SOVA) and the logarithmic versions of the MAP algorithm, namely, Log-MAP decoding algorithm. The bit error rate (BER) performances of these algorithms are compared.
Authors and Affiliations
T. Krishna Kanth
Keywords
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