在对卫星移动信道传输特性统计模型研究分类的基础上，给出了适合卫星移动信道的部分阴影扩展模型。
Based on the statistical model classification of mobile satellite communication channel, a partial-shadowing extended model suited for mobile satellite channel is proposed.
本文对这四种卫星移动信道进行了仿真运算，并将仿真数值与实测数据进行比较，从而验证了这些信道模型及其相关参数的有效性。
Through simulation computation for these four mobile satellite channels, the validity of the simulation model and corresponding parameters put through in the paper has been verified.
本文阐述陆地移动卫星通信系统(LMSS)及其信道传输的性能和特点。
The paper introduces the land mobile satellite communication system (LMSS) and its channel transmission performance and features.
在平坦衰落假设基础上，分析了QPS K信号通过移动卫星信道的非线性性能。
The performance of QPSK signal transmitted through nonlinear mobile satellite channel is analyzed based on presumed frequency non-selective fading.
其次，本文对低轨卫星移动通信信道模型进行了详细的分析。
Secondly, this paper gives a detail analysis for mobile communication channel model of low-orbit satellites.
此外，本文还对卫星移动通信信道模拟器进行了分析，并提出了其初步整体设计方案。
In addition, the paper also analysis mobile satellite communication channel simulator, and gives its initial general design.
测试低轨卫星移动通信信道模拟器的硬件性能。
Test the specification of the LEO satellite communication channel simulator.
并结合具体的卫星移动通信信道的复杂时变特性，对SCTCM在该信道下的误码率(BER)性能进行了理论分析，给出了误码率的一个上界。
According to the complicated time varying property of the satellite mobile communication channel, the BER performance of SCTCM in this kind of channel is analyzed and an upper bound is given.
多信道共用技术已经广泛应用于卫星通信、移动通信、以及其它类型的通信系统。
The multi-channel sharing technique has already been widely applied to communication field such as satellite communication, mobile communication and other type of communication systems.
这些都将为下一步在硬件平台上实现低轨卫星移动通信信道模拟器奠定了基础。
All these will afford more detailed theoretical basis for further studying and simulating low-orbit satellite mobile channels simulator in the hardware platform.
针对具有点波束的低轨卫星移动通信系统，提出了一种信道动态预留策略。
A dynamic channel reserve strategy for LEO communication system with spot-beam is proposed.
本文利用全阴影模型的研究结论，就实际陆地移动卫星信道部分阴影模型的仿真问题，拟合了模型参数与卫星仰角之间的关系。
These research results have been used to design the partial shadow model for simulating the same channel of LMS. The author fits the curves between the model parameters and satellite elevations.
结果表明移动卫星信道中存在的多径和阴影现象使系统的误码性能恶化，而采用宽带扩频调制则可极大改善系统的性能。
Based on the model, the BER Bit Error Ratio performance is analyzed for narrow-band modulation and wide-band spread -spectrum modulation of coherent PSK Phase Shift Key...
结果表明移动卫星信道中存在的多径和阴影现象使系统的误码性能恶化，而采用宽带扩频调制则可极大改善系统的性能。
Based on the model, the BER Bit Error Ratio performance is analyzed for narrow-band modulation and wide-band spread -spectrum modulation of coherent PSK Phase Shift Key...
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