Title :
Variable-rate punctured convolutional coding over fading mobile communication channels
Author :
Abou-El-Azm, Atef ; Mohammed, Farid Shawki
Author_Institution :
Dept. of Electr. Commun., Fac. of Electron. Eng., Menouf, Egypt
Abstract :
In this paper a method of keeping the bit error rate (BER) constant and optimizing the transmission efficiency of a digital mobile communication system using variable-rate convolutional coding is introduced. Regardless of the fluctuation of the received signal due to fading effects, the BER can be kept constant by changing the code rate R and obtaining different degrees of correction capabilities. In this paper a computer simulation model of a digital mobile communication system is also introduced. Rate Compatible Punctured Convolutional codes (RCPC codes) are used to provide the rate variation. An improvement in the average transmission efficiency(ηav) by about 35% is obtained with six kinds of codes with rates (R=1/2, 6/11, 6/10, 6/9, 6/8, and 6/7) and keeping the BER at 10-3
Keywords :
convolutional codes; digital radio; digital simulation; error statistics; fading channels; mobile radio; telecommunication computing; variable rate codes; bit error rate; computer simulation model; constant BER; correction capabilities; digital mobile communication system; fading mobile communication channels; rate compatible punctured convolutional codes; transmission efficiency; variable-rate punctured convolutional coding; AWGN; Additive white noise; Bit error rate; Convolution; Convolutional codes; Decoding; Error correction; Fading; Mobile communication; Protection;
Conference_Titel :
Circuits and Systems, 1999. ISCAS '99. Proceedings of the 1999 IEEE International Symposium on
Conference_Location :
Orlando, FL
Print_ISBN :
0-7803-5471-0
DOI :
10.1109/ISCAS.1999.778788
