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A WIRELESS COMMUNICATION TRANSCEIVER SYSTEM BASED ON PROXMITY-1 SPACE LINK PROTOCOL

机译:基于PROXIMITY-1空间链接协议的无线通信收发系统

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Proximity space communication links are short, two-way, fixed or mobile wireless links, which are used to communicate between detectors, landers, patrol units, rail constellation and relay satellites. According to the characteristics of the proximity space communication links environment and the proximity-1 space link protocol which is issued by the Consultative Committee for Space Data Systems (CCSDS), this paper proposes a realization scheme of the proximity space communication transceiver system which is based on the basic wireless communication architecture. The (2,1,7) convolution code and CRC-32 cyclic redundancy code are used to improve the reliability of the information transmission. Because the communication links have the characteristics of multipath fading channels, the scheme recommends the channel estimation and equalization, by using attached synchronization marker (ASM) which is in the front of every transmission frame as the training sequence to eliminate the influence of channel. Finally, combined with the communication environment and the system parameters required in the recommend standards, the transceiver system performance is analysed and the key technologies are evaluated. The simulation results verify the effectiveness of the scheme. The scheme has very high references for the design of proximity space communication system.
机译:邻近空间通信链路是短的双向双向固定或移动无线链路,用于在探测器,着陆器,巡逻单元,轨道星座和中继卫星之间进行通信。根据空间数据系统协商委员会(CCSDS)发布的邻近空间通信链路环境的特点和邻近1空间链路协议的特点,提出了一种基于该协议的邻近空间通信收发器系统的实现方案。在基本的无线通信体系结构上。 (2,1,7)卷积码和CRC-32循环冗余码用于提高信息传输的可靠性。由于通信链路具有多径衰落信道的特性,因此该方案通过使用位于每个传输帧前面的附加同步标记(ASM)作为训练序列来消除信道的影响,从而建议信道估计和均衡。最后,结合推荐标准中要求的通信环境和系统参数,对收发器系统的性能进行了分析,并对关键技术进行了评估。仿真结果验证了该方案的有效性。该方案对邻近空间通信系统的设计具有很高的参考价值。

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