802.16e系统中信道编码的设计

WiMAX technology based on IEEE 802.16e-2004 air interface has taken a very important place in immobile wireless MAN just from it was put forward. The cover bound of wireless access system based on 802.16e system has achieved 50 kilometer, so it is being seen as a scheme to resolve “the last one mile” problem in the broad band access. The characteristic of wireless channel is very intricacy. It contains many defferent noises, and multi-path fading. When time or area varys, it will also change. So, channel coding is an obligatory and very important part of a powerline communication system. The purpose of this paper is studing the hardware implementation method of channel coding. There is important theoretical and practical significance in developing Intellectual Property (IP) on our own basis of real time OFDM system.This paper is arranged as following: the developing process of WiMAX technology is introduced first. Then it mainly discusses the basic concepts of OFDM systems as well as important properties. Further more introduces the principle of channel coding, incluing convolutional code, and interleaving. The emulator of channel encoding by Matlab is analyzed in the end.