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基于卫星网络模式的农村党员干部现代远程教育系统 被引量:6
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作者 刘光明 《甘肃科技》 2010年第5期16-17,共2页
基于卫星网络技术并辅以计算机等交互设备,用于传输、存储和播放相关教育资源的农村党员干部现代远程教育系统,因其能实现资源免费共享,信息覆盖面广,一般不受地域限制等特点,非常适合于地形复杂、山大沟深、村镇分散的山区。介绍了基... 基于卫星网络技术并辅以计算机等交互设备,用于传输、存储和播放相关教育资源的农村党员干部现代远程教育系统,因其能实现资源免费共享,信息覆盖面广,一般不受地域限制等特点,非常适合于地形复杂、山大沟深、村镇分散的山区。介绍了基于卫星网络模式的远程教育系统结构设计和卫星模式基本型终端接收站点的功能要求及应用特点。 展开更多
关键词 卫星网络模式 远程教育 系统结构设计 终端接收站点
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A QoS Guarantee Service Serving Model in LEO Satellite Networks Based on Differential Game
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作者 LIU Qian ZHAO Ming LIN Fuhong 《China Communications》 SCIE CSCD 2014年第A02期128-134,共7页
Low Earth Orbit (LEO) satellites networks can provide multimedia service and plays an increasingly important role in the exploitation of space. However, one of the challenges in LEO satellites networks is that the s... Low Earth Orbit (LEO) satellites networks can provide multimedia service and plays an increasingly important role in the exploitation of space. However, one of the challenges in LEO satellites networks is that the services are suffered from high symbol error, limited storage space and limited available energy. To analyze the performance of the service in LEO satellites networks, a model, based on differential game, is proposed for satisfying the QoS requirements of multimedia applications. The controller of our model is the transmitting rate and the object is to maximize the payoff depending on the error symbol rate, the available energy, the bandwidth and the process ability so as to guarantee the QoS service. In order to solve our built model, we use the Bellman theorem to make formulas on the trance of the optimal transmitting rate. Furthermore, simulation results verify that the service can be maximized by using our derived transmitting rate trance. 展开更多
关键词 LEO satellite networks QOS differential game
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