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基于OFDM星载交换的星地上行链路跨层设计算法

Uplink cross-layer design algorithm for on-board switch scheme based on OFDM
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摘要 以基于OFDM的星载交换方案为研究背景,提出了此星载交换方案的星地上行链路跨层设计工作流程和相关算法。此算法以使点波束星地上行链路的传输容量最大化为目标,根据各个地面设备的星地上行链路信号发射功率上限、当前星地上行链路信道状态、每个星地上行链路传输业务的业务类型、业务传输速率要求等参数,在各个星地上行链路传输业务之间自适应分配子载波并自适应配置每个子载波的调制制式,生成每个传输业务与子载波的对应关系,充分利用链路资源并尽可能满足传输业务的QoS要求。 An uplink cross-layer design procedure and algorithm for on-board switch scheme based on OFDM was pro-posed.The ultimate objective is to maximize the system uplink throughput subject to QoS of services,every user’s transmit power constraint and uplink channel condition.The algorithm can adaptively allocate subcarriers and chose modulation scheme for every subcarrier among different users and services.Simulation results show that the proposed algorithm is able to guarantee consistent degree of QoS for the same service.
作者 党军宏 晏坚 曹志刚
机构地区 南京电讯技术研究所 清华大学电子工程系
出处 《通信学报》 EI CSCD 北大核心 2010年第9期109-117,共9页 Journal on Communications
基金 国家高技术研究发展计划("863"计划)基金资助项目(2007AA01z2b6)~~
关键词 星载交换 正交频分复用 上行链路 跨层设计 on-board switch OFDM uplink cross-layer design
分类号 TN919.72 [电子电信—通信与信息系统]
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参考文献9

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共引文献11

通信学报
2010年 第9期

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