http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
수동형 레이더에 대한 톤 재밍 종류별 모의실험 결과 분석
곽현규(Kwak Hyun Gyu),이종환(Lee Jong Hwan),정인환(Jeong In Hwan),김산해(Kim San Hae),송규하(Song Kyu Ha) 한국통신학회 2021 한국통신학회 학술대회논문집 Vol.2021 No.11
본 논문에서는 자체 전파 송신 없이 FM 라디오 방송과 같은 제 3의 송신원에서 방사되는 전파를 이용하여 은밀하게 표적 탐지가 가능한 PCL(Passive Coherent Location) 기반 수동형 레이더 대한 톤 재밍 종류별 모의실험 결과를 분석하고자 한다.
이경규,김산해,김홍철,이원철,신요안 崇實大學校 生産技術硏究所 2002 論文集 Vol.32 No.-
MIMO (multi-input multi-output) systems can achieve high data capacity and high data rate in the third generation (3G) or beyond-3G mobile communication systems. To effectively improve the performance of MIMO systems, new detection schemes which can mitigate mutual interferences from multiple transmit antennas, are highly required. In this paper, we consider a posteriori probability (APP) type detection schemes for the MIMO systems, and compare with other sub-optimal detection schemes based on zero forcing (ZF) and minimum mean square error (MMSE) - ordered successive interference cancellation (OSIC). Simulation results show that the APP outperforms ZF-OSIC and MMSE-OSIC, while the performance discrepancy becomes smaller as the number of receive antennas increases.
중압 배전망에서의 전력선 통신을 위한 OFDM 기법의 성능 분석
임장규,김산해,장희동,이원철,신요안 崇實大學校 生産技術硏究所 2002 論文集 Vol.32 No.-
Recently, PLC (Power Line Communication) on medium voltage power lines have been gaining much attention for high data rate access networking. In this paper, we evaluate the performance of OFDM (Orthogonal Frequency Division Multiplexing) schemes on medium voltage power line channels in the frequency range up to 20 ㎒. We analyze fading characteristics of multi-path channel models for medium voltage power lines, and simulations have been carried out for the OFDM using adaptive bit loading scheme. Simulation results indicate that the OFDM schemes with the adaptive bit loading show good bit error rate performance under harsh medium voltage power lines channel.