期刊名称：International Journal of Computer Trends and Technology
电子版ISSN：2231-2803
出版年度：2016
卷号：40
期号：2
页码：104-108
DOI：10.14445/22312803/IJCTT-V40P120
出版社：Seventh Sense Research Group
摘要：In digital communication system error correction codes are used when channel is noisy. An error correction code removes errors induced in communication and make possible error free transmission. By use of such error correction code we can send signal at lower transmit power as compared to uncoded system. Convolutional code corrects both type of errors random and burst and used in deep space and wireless communication. This paper introduces convolutional encoders for various code rates and generator polynomials and calculates BER performance for coded and uncoded system. Generator polynomials were selected for code rate 1/2, 1/3, and 1/4 on the basis of BER performance. This paper presents the signal power gain achieved by convolutional code as compared to uncoded system.
