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| Decoding Algorithm for Block Turbo Codes Based on the Adaptive Quantized Testing Sequences |
| Liu Xing-cheng; Wang Kang |
| Department of Electronic and Communications Engineering, Sun Yat-sen University, Guangzhou 510275, China |
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Abstract Considering the defects in the adaptive Chase algorithm, a novel decoding algorithm for block Turbo codes based on the adaptive quantized testing sequences is proposed. This algorithm is employed to investigate the number of testing sequences, select the test patterns according to the possibility of least reliable bits, and use the quantizing-testing function to quantize the testing sequences according to the level of SNR, which can adaptively adjust the complexity of decoding. The simulation results show that, compared with the traditional algorithms, the proposed algorithm can reduce the decoding complexity with the same BER performance.
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Received: 31 December 2008
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2009, Vol. 31 
