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BER Performance and Decoding Time Enhancement of LTE Turbo Decoder

Yamaan I. Majeed , Ali F.Jumma

Turbo coding is one of the major blocks of LTE system.This paper provides a BER performance comparison of three different decoding algorithms for turbo decoder namely Maximum a Posteriori (MAP) algorithm, Log-MAP algorithm, Max-Log-MAP algorithm. And compare the BER performance of different turbo decoding iterations and measure the time taken for different number of decoding iterations.Finally test an early stopping mechanism depending on testing the cyclic redundancy check (CRC)attachment after every decoding iteration to reduce the decoding time.