Title :
Trellis coding of Gaussian filtered MSK
Author :
Tyczka, Piotr ; Holubowicz, Witold
Author_Institution :
Inst. of Electron. & Telecommun., Poznan Tech. Univ., Poland
Abstract :
Trellis coding of Gaussian minimum shift keying (GMSK) is considered. The structure of combinations of rate 1/2 and 2/3 binary convolutional encoders and GMSK modulation with several values of the parameter BT is studied by means of the so called “matched coding approach”. It is shown that in such connections up to 3 distinct classes of codes can be identified each with different receiver complexity. The results of the optimization procedure for codes combined with GMSK are given. The results show that significant coding gains (over 6.5 dB) are obtained. Power-bandwidth performance of the best coded schemes is presented where it is demonstrated that variation of BT offers another degree of freedom in the design of communication systems
Keywords :
convolutional codes; minimum shift keying; optimisation; trellis coded modulation; GMSK modulation; Gaussian filtered MSK; coding gains; communication systems design; matched coding approach; minimum shift keying; optimization; power-bandwidth performance; rate 1/2 binary convolutional encoders; rate 2/3 binary convolutional encoders; receiver complexity; trellis coding; AWGN channels; Bandwidth; Communications technology; Convolution; Convolutional codes; Filters; Gain; Modulation coding; RF signals; Viterbi algorithm;
Conference_Titel :
Information Theory, 1995. Proceedings., 1995 IEEE International Symposium on
Conference_Location :
Whistler, BC
Print_ISBN :
0-7803-2453-6
DOI :
10.1109/ISIT.1995.531165
