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Iterative decoding of GMSK modulated convolutional code with multiple differential detection

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4 Author(s)
Guan-Feng Qin ; Dept. of Electron. Eng., Tsinghua Univ., Beijing, China ; Shi-dong Zhou ; Li-Min Xiao ; Yan Yao

A novel receiver architecture for the serial concatenation system of a convolutional code and a Gaussian minimum shift keying (GMSK) modulator is proposed. A maximum a posteriori probability algorithm for the multiple differential detection (MDD) of GMSK signals, which accepts a priori information and provides a soft-output for the subsequent convolutions decoder, is derived. The soft-output of the decoder is fed back to the MDD receiver for further improvement, thus resulting in an iterative decoding structure

Published in:

Electronics Letters  (Volume:36 ,  Issue: 3 )