METHOD FOR GENERATING AND DETECTING PREAMBLE, AND DIGITAL COMMUNICATION SYSTEM BASED ON THE SAME

摘要

PURPOSE: A preamble creation and detection method and digital communication system thereof are provided to remarkably increase accuracy of frame synchronization by minimizing power consumption and hardware complexity. CONSTITUTION: A preamble creation apparatus(11) includes a pseudo noise code creation unit and a line coder. A preamble detection apparatus(12) calculates correlation values by using a first pseudo noise code. The preamble detection apparatus repetitively detects a first sub preamble. When the first sub-preamble is more detected as the set number, the preamble detection apparatus calculates the correlation value by using the second pseudo noise code. The preamble detecting apparatus detects a second sub preamble. [Reference numerals] (11) Preamble creation apparatus; (111) Pseudo noise code creation unit; (113) Line coder; (12) Preamble detection apparatus; (121) First detection unit; (123) Second detection unit; (13) Data transmission and reception unit