从香农公式再看直扩通信与通信干扰之间的博弈

Viewing Again on the Game between DSSS Communication and Jamming from Shannon Formula

直接序列扩频抗干扰传输与对直扩通信实施干扰是对抗双方长期研究的热点。针对这一热点问题,通过在香农公式中扩展引入干扰信号分量,定量描述了在通信干扰条件下直扩通信链路的信道容量,展现了通信干扰实施方与通信抗干扰传输方在信道容量控制争夺中的博弈过程。在此基础上从理论上揭示了无限不循环长码直扩通信在干扰条件下所具有的永不断链降速传输的应用潜力,以及在工程应用中所具有的在干扰中通信与在通信中干扰的新型应用模式,从而为直扩通信与通信干扰之间的博弈关系研究、通信波形与干扰波形一体化设计提供了新的参考。

DSSS (Direct sequence spread spectrum) anti-jamming transmission and jamming on DSSScommunication are hot topics of long-term research on both sides of the confrontation.Aiming at this hot issue, the channel capacity of DSSS communication under the condition of jamming is quantitatively described by introducing jamming component into Shannon formula. The game process of communication jamming implementation and the communication anti-jamming transceiver in contentionfor channel capacity control is presented. The application potential of link maintenance through lowering its rate is theoreticallyrevealed for DSSS communication by infinite long code without cycle in the condition of jamming, including the new application mode of communication inside the jamming and jamming inside the communicationfor engineering, thus providing a new reference for theresearch on game relationship between DSSS communication and jamming, and for the integrated design of communication waveform and jammingwaveform.