# 가우시안 잡음이 존재하는 무선채널에서 Chirp RTLS 시스템의 성능 특성에 관한 연구

• Kang, Byeong-Gwon (Dept. of Information and Communication Engineering, Soonchunhyang University)
• 강병권 (순천향대학교 정보통신공학과)
• Accepted : 2013.07.20
• Published : 2013.07.28
• 36 7

#### Abstract

The chirp signaling has been mainly used in radar systems due to its good correlation characteristics, and nowadays it is applied to real time locating system(RTLS). The RTLS with chirp signaling was chosen as a standard such as ISO/IEC 24730-5 and IEEE 802.15.4a. In this paper, the performance of a real time locating system with chirp signaling was evaluated and simulated with relative distance error rates. We considered three cases of S/I = -30[dB], -20[dB], and -10[dB] with Rician factor K=10 and K=20. The performance was enhanced with K factor improvement by 25%, 27% and 50% for respective three cases of S/I. As results, in case of S/I < -20[dB], the minimum signal power is required for performance improvement even though the line of sight component is helpful. And also, in case of S/I ${\geq}$ -20[dB], as the line of sight component is stronger the better performance is obtained.

#### Keywords

Chirp signaling;real time locating system;Rician fading;simulation;relative distance error rates