电子科技大学学报2016，Vol.45Issue(2)：179-184,6.DOI:10.3969/j.issn.1001-0548.2016.03.004
DVB-SH系统中改进的两状态LMS信道模型
Improved Two-State LMS Channel Model for DVB-SH System
摘要
Abstract
Three-state land mobile satellite (LMS) channel model that describes the narrowband propagation channel in three possible shadowing states can serve as a baseline for physical layer simulation of the digital video broadcasting-satellite services to handhelds (DVB-SH) standard. But the fixed propagation parameters for each state and the state classification impact the parameters selection of physical layer in the DVB-SH standard. For this, an improved two-state LMS channel model is proposed in this paper. The transitions between two states are modeled by employing state sequence generator (SSN). When the state is changed, new propagation parameters are obtained by propagation parameter generator (PPG) and then are used to generate the complex time series by Loo generator. Power control (PC) is used to reduce fading and gets much smaller dynamic rang in the controlled signal. Simulation results show that the proposed model is effective for representation of shadowing conditions and the PC scheme could achieve maximum control gain at some termination speed.关键词
信道模型/DVB-SH/陆地移动卫星/Markov链/功率控制/semi-Markov链Key words
channel model/DVB-SH/land mobile satellite (LMS)/Markov chain/power control (PC)/semi-Markov chain分类
信息技术与安全科学引用本文复制引用
廖希,王杨,赵旦峰..DVB-SH系统中改进的两状态LMS信道模型[J].电子科技大学学报,2016,45(2):179-184,6.基金项目
中央高校基本科研业务专项基金(HEUCF130802) （HEUCF130802）
