DocumentCode :
2452538
Title :
The Research of G-function Decoding Method for DFH System Based on State Trellis
Author :
Dong Bin-hong ; Tang Chen ; Chen, Tang ; Li Shao-qian
Author_Institution :
Nat. Key Lab. of Sci. & Technol. on Commun., Univ. of Electron. Sci. & Technol. of China, Chengdu, China
Volume :
2
fYear :
2010
fDate :
12-14 April 2010
Firstpage :
311
Lastpage :
315
Abstract :
Differential frequency hopping (DFH) was introduced as a new technology for reliable high data rate transmission in high frequency (HF) bands. However, traditional G-function decoding method is based on frequency trellis (FT-Viterbi) and its bit error rate (BER) performance depends on the minimum free distance (dfree) of frequency trellis. When reducing which is the number of available frequency choices, the (dfree) will reduce, causing a sharp decline in the system BER performance. In view of the disadvantage of the traditional G function decoding method, a G-function decoding method based on status trellis (ST-Viterbi) and a new general design method for G function are presented in this paper. The results of theoretical analysis and simulation show that when reducing, ST-Viterbi was better than FT-Viterbi in the system BER performance. At a BER of 9×10-3, when M is 32, ST-Viterbi is more than FT-Viterbi 0.6dB SNR gain, when M is 16, ST-Viterbi is more than FT-Viterbi 1dB SNR gain.
Keywords :
Viterbi decoding; frequency hop communication; trellis codes; DFH system; G-function decoding method; bit error rate; differential frequency hopping; frequency trellis -Viterbi; high data rate transmission; state trellis; status trellis; Cost function; Decoding; Distributed control; Energy efficiency; Energy management; Energy measurement; Insulation; Load management; Maintenance engineering; Technological innovation; DFH; G-function; Minimum free distance; Status trellis diagram;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Communications and Mobile Computing (CMC), 2010 International Conference on
Conference_Location :
Shenzhen
Print_ISBN :
978-1-4244-6327-5
Electronic_ISBN :
978-1-4244-6328-2
Type :
conf
DOI :
10.1109/CMC.2010.43
Filename :
5471270
Link To Document :
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