Journal of Harmonized Research in Engineering

EVALUATION OF CONVOLUTIONAL ENCODERS WITH VITERBI DECODERS FOR NEXT GENERATION BROADBAND WIRELESS ACCESS SYSTEM

Abstract

Author(s): Engr Ekwe O. A., Ilo S. F., Justice Ihekoronye, and Emole E.C

The IEEE STD 802.16 – 2009 in their specification for the physical layer of the next generation Broadband Wireless Access (BWA) system approved a forward error correction, FEC with the concatenatio n of Reed-Solomon outer code and a rate compactible convolutional inner code. This evaluation is based on modelling a configurable convolutional encoder and Viterbi decoder by making use of the stipulated rate-compactible punctured convolutional codes from the usual mother rate 1/2, constraint length K = 7 and generator polynomial , to obtain higher rates of 2/3, 3/4 and 5/6.