| 摘要: |
| 为了提高卫星通信信道的频谱利用率，从卫星通信中的认知无线电技术出发，简述了当前认知卫星研究现状。针对移动用户目标系统（Mobile User Objective System，MUOS）的特殊通信环境，提出了插空式（overlay）频谱共享方式下基于拍卖模型的认知卫星信道分配方式，并建立了收益公式。同时，引入星上频谱共享干扰公式来计算认知用户对系统造成的影响，并代入收益公式以计算认知技术给系统带来的收益大小；之后给出模拟通信环境参数，利用Matlab进行仿真计算。仿真结果表明，认知用户的加入虽会使主用户通信质量略有下降，但使系统总体收益呈上升趋势。 |
| 关键词: 卫星通信 移动用户目标系统 认知无线电 拍卖模型 信道分配 |
| DOI： |
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| 基金项目: |
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| Channel resource allocation in mobile user objective system based on auction model |
| YU Huaijin,YANG Feng,GUO Jianxin,DUAN Xiaopei |
| () |
| Abstract: |
| To increase the spectrum utilization of satellite communication channels，starting with the cognitive radio(CR) technology in satellite communications，this paper introduces the research status of CR satellite.For the special communication environment in mobile user objective system(MUOS)，a channel allocation method of CR satellite based on auction model with overlay spectrum sharing method is proposed，and an income formula is built. Meanwhile，a satellite spectrum sharing interference formula is introduced to calculate the impact of cognitive users(CU) on system，which will be put into the income formula to calculate the income that CR brings to the system.Then the parameter values of simulative communication environment are given and used to perform simulative calculation by Matlab. The result shows that although the join of CUs makes the communication quality of primary users a little bad，it still brings a large benefit for the whole system. |
| Key words: satellite communication mobile user objective system(MUOS) cognitive radio auction model channel resource allocation |
《电讯技术》编辑部 