Title :
Optimal soft decoding for joint trellis-coded quantization/continuous phase modulation
Author :
Lin, Zihuai ; Aulin, Tor
Author_Institution :
Dept. of Comput. Eng., Chalmers Univ. of Technol., Gothenburg, Sweden
fDate :
29 June-4 July 2003
Abstract :
The performance of joint trellis coded quantization/continuous phase modulation (TCQ/CPM) has been investigated. The optimal soft decoding algorithm for the combined TCQ/CPM scheme has been derived and the simulation results show that a large improvement can be achieved when compared with hard decoding. The signal to quantization noise ratio performance for the serially concatenated TCQ CPM system with iterative decoding has also been studied. Numerical results indicate that substantial improvement of performance owing to optimal TCQ based on CPM can be achieved at moderate to high signal to noise ratio on an additive white Gaussian noise channel for a memoryless Gaussian source.
Keywords :
AWGN channels; concatenated codes; continuous phase modulation; iterative decoding; memoryless systems; quantisation (signal); trellis codes; CPM; additive white Gaussian noise channel; continuous phase modulation; iterative decoding; joint trellis-coded quantization; memoryless Gaussian source; optimal soft decoding; serially concatenated code; signal quantization noise ratio; Additive white noise; Bandwidth; Channel coding; Continuous phase modulation; Iterative algorithms; Iterative decoding; Maximum likelihood decoding; Maximum likelihood detection; Quantization; Signal to noise ratio;
Conference_Titel :
Information Theory, 2003. Proceedings. IEEE International Symposium on
Print_ISBN :
0-7803-7728-1
DOI :
10.1109/ISIT.2003.1228195
