SECURE COMMUNICATION METHOD AND SYSTEM BASED ON BIT ERROR PROBABILITY

摘要

Embodiments of the present invention relates to a secure communication method and system based on a bit error probability. The method according to an exemplary embodiment of the present invention operates in various substantial channels. In addition, data communication security may be achieved using an MDS code that provides an optimal error correction performance when a code length and a transmission rate is given.

主权项

1. A method for performing Hybrid Automatic Repeat Request (HARQ) by a data transmitting terminal in a wireless communication system, the method comprising:
transmitting data using a specific code word selected from among a plurality of code words included in a mother code; calculating a Bit Error Rate (BER) upper bound for a receiving terminal, which receives the data, and a BER lower bound for a third terminal that is possibly able to eavesdrop the data; and performing the HARQ based on whether the BER upper bound is greater than a BER reference level for the receiving terminal and whether a probability of the BER lower bound to be smaller than a BER reference level for the third terminal is smaller than a predetermined value, wherein the BER upper bound is determined based on a transmission rate corresponding to the mother code and channel information regarding the receiving terminal, and wherein the BER lower bound is determined based on the transmission rate and channel information regarding the third terminal.