Consideration of Roman Character in KS × 1001 Code System for Information Interchange considered AMI/HDB-3 and HDLC FLAG

Title & Authors
Consideration of Roman Character in KS × 1001 Code System for Information Interchange considered AMI/HDB-3 and HDLC FLAG
Hong, Wan-Pyo;

Abstract
Datacommunications transmit the source codes that are coded in information devices, such as computer to the transmission line by means of the line coded signal. AMI method is applied to the line coding method to transmit the signal for long distance. The disadvantage of the AMI method is to loss the bit synchronization when consecutive binary bit 0 over 4ea is coming into line coder. The scrambling technique is used to overcome the problem. The HDB-3 scrambling method is used in Korea standard which standard in ITU-T. When the HDB-3 technology is used. the method should convert the consecutive bit 0 over 4ea to certain bits format. As a result, when there are many such kind of 0 bit stream in source codes, data transmission efficiency will be decreased to treat in line coder, etc. This paper is directed to study the Roman character code system in $\small{KS{\times}1001}$, Korea standard for information exchange code in datacommunication systems. Based on the study result, this paper proposed the maximum optimized Roman character code system. In the study, Character coding rule for $\small{4{\times}4}$bits and the statistical data for roman character using frequency were considered to simulate. The paper shows the result that when the proposed new roman character coding system is applied to use, the data transmission efficiency could be increased to about 134% compared to existing code system.
Keywords
Roman Character;Source Code;Line Coding;HDB-3;HDLC;
Language
Korean
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