Journal of Applied Sciences1812-56541812-5662Asian Network for Scientific Information10.3923/jas.2008.2867.2873AfghahFatemeh ArdebilipourMehrdad RaziAbolfazl 122008816In this study, we investigate a new method for turbo
codes which is dividing turbo encoder and decoder into several parallel
coding and decoding blocks. These blocks work simultaneously and yield
to much faster coding scheme in comparison with classical turbo codes.
We compare simulation results of these new turbo codes with classical
turbo codes to demonstrate that their performance is comparable with classical
turbo codes, albeit they are much faster. Also, we introduce a new system
by concatenating this fast turbo coding as outer code with Alamouti`s
G_{2} space-time block coding scheme as inner code to achieve
the benefits of both techniques including acceptable diversity and coding
gain as well as short coding delay. We consider the performance of this
new system in the block Rayleigh fading channel.]]>Afghah, F., M. Ardebilipour and A. Razi, 2008Agrawal, D., V. Tarokh, A. Naguib and N. Seshadri, 1998Alamouti, S.,1998Bahl, L.R., J. Cocke, F. Jelinek and J. Raviv,1974Bauch, G., 1999Erfanian, J., S. Pasupathy and G. Gulak, 1994Gazi, O. and A.O. Yilmaz, 2007Hagenauer, J. and P. Hoeher, 1989Hanzo, L., T.H. Liew and B.L. Yeap, 2002Lu, B., X. Wang and K.R. Narayanan, 2002Robertson, P., E. Villebrun and P. Hoeher,1995Tarokh, V., N. Seshadri and A.R. Calderbank,1998Tarokh, V., H. Jafarkhani and A.R. Calderbank, 1999Tarokh, V., H. Jafarkhani and A.R. Calderbank, 1999Wang, Y., J. Zhang, M. Fossorier and J.S. Yedidia, 2005Berrrou, C., A. Glavieux and O. Thitimajshima,1993