Title :
Convolutional coding system with tone calibrated technique for land mobile radio communication
Author :
Chen, Yuh-Long ; Wei, Che-Ho
Author_Institution :
Inst. of Electron., Nat. Chiao Tung Univ., Hsin-Chu, Taiwan
Abstract :
A data transmission system which combines convolutional coding with interleaving and modulation using the tone calibrated technique (TC) is presented for combating multipath fading usually encountered in land-mobile communication channels. By extracting and processing the faded pilot tone, coherent demodulation of the signal and soft-decision Viterbi decoding which channel amplitude measurement can be performed. The irreducible error rate is also reduced and good error performance is obtained. The performance in land mobile radio channels of the system is analyzed. Numerical results for the system with rate 1/2 optimum codes of constraint length k=3 to 7 are also provided
Keywords :
calibration; data communication systems; decoding; demodulation; error correction codes; fading; mobile radio systems; telecommunication channels; coherent demodulation; convolutional coding; data transmission system; error performance; interleaving; land mobile radio channels; land mobile radio communication; modulation; multipath fading; soft-decision Viterbi decoding; tone calibrated technique; Communication channels; Convolution; Convolutional codes; Data communication; Data mining; Demodulation; Fading; Interleaved codes; Modulation coding; Signal processing;
Conference_Titel :
Computer and Communication Systems, 1990. IEEE TENCON'90., 1990 IEEE Region 10 Conference on
Print_ISBN :
0-87942-556-3
DOI :
10.1109/TENCON.1990.152569
