Title :
On the design of optimal (2,1) Z2-convolutional coded CPFSK over Rayleigh fading channels
Author :
Hsiao, Chang-Lung ; Lu, Chung-Chin
Author_Institution :
Dept. of Electr. Eng., Nat. Tsing Hua Univ., Hsinchu, Taiwan
Abstract :
For Rayleigh fading channels, the primary code design criterion for a trellis coded modulation scheme is to maximize its effective code length (ECL). This paper concerns the design of optimal (2,1) Z2 -convolutional encoders (CE) which, when combined with the continuous phase encoder (CPE) of CPFSK scheme, reaches the upper bound of ECL of a generic trellis coded modulation scheme. We develop sufficient conditions for the optimality of such a CE and the upper bound of the complexity for the test of these sufficient conditions is also shown
Keywords :
Rayleigh channels; continuous phase modulation; convolutional codes; frequency shift keying; optimisation; trellis coded modulation; Rayleigh fading channels; complexity; continuous phase encoder; effective code length; optimal convolutional coded CPFSK; optimal convolutional encoders; primary code design criterion; sufficient conditions; trellis coded modulation; upper bound; Continuous phase modulation; Convolutional codes; Delay; Fading; Modulation coding; Polynomials; Sufficient conditions; Testing; Transfer functions; Upper bound;
Conference_Titel :
Information Theory, 1998. Proceedings. 1998 IEEE International Symposium on
Conference_Location :
Cambridge, MA
Print_ISBN :
0-7803-5000-6
DOI :
10.1109/ISIT.1998.709063
