Title :
A power and bandwidth efficient joint source and channel coding scheme
Author :
Lin, Zihuai ; Aulin, Tor
Author_Institution :
Dept. of Comput. Eng., Chalmers Univ. of Technol., Gothenburg, Sweden
Abstract :
Joint source and channel coding (JSCC) using combined trellis coded quantization (TCQ) and trellis coded continuous phase modulation (CPM) is studied. Optimal soft decoding based on the a posteriori probability (APP) algorithm for trellis coded CPM is developed for the considered systems. It has been demonstrated that the combined TCQ/CPM systems are both power and bandwidth efficient compared with the combined TCQ/TCM/8PSK systems. Furthermore, a TCQ design algorithm for the noisy channel is developed. The novelties of this work is the use of a soft decoder and the APP algorithm for combined TCQ/CPM systems.
Keywords :
combined source-channel coding; continuous phase modulation; phase shift keying; probability; quantisation (signal); trellis coded modulation; PSK system; a posteriori probability algorithm; bandwidth efficiency; joint source and channel coding scheme; noisy channel; power efficiency; trellis coded continuous phase modulation; trellis coded quantization; AWGN; Additive white noise; Bandwidth; Channel coding; Gaussian noise; Iterative algorithms; Maximum likelihood decoding; Maximum likelihood detection; Nonlinear distortion; Quantization;
Conference_Titel :
Communications, 2005. ICC 2005. 2005 IEEE International Conference on
Print_ISBN :
0-7803-8938-7
DOI :
10.1109/ICC.2005.1494519
