RF spectrum represents a limited natural resource. The increasing numbers of wireless devices demand more and more spectrum for diverse future applications and services. CR is explored as a technological solution to the current paradigm of spectrum scarcity by opportunistically sharing the spectrum with licensed users. FD operation further enhances the performance of CR with higher throughput and optimized sensing time. Tactical radios are traditionally operated in the licensed frequency bands. To comply with the soaring demands, alternative means are explored to share the spectrum among tactical users. In this article, an FD-CR integrated with tri-band operation and dynamic spectrum shaping is proposed for tactical communications. The proposed radio is implemented in the Zynq SDR platform. The performance results reveal that the FD-CR offers higher throughput, higher probability of detection (Pd > 0.9), and optimized sensing time, which empowers the system to be ideally suitable for tactical communication networks.

中文翻译：

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用于战术通信的三频全双工认知无线电收发器

射频频谱代表了有限的自然资源。越来越多的无线设备需要越来越多的频谱用于未来的各种应用和服务。通过与许可用户机会性地共享频谱，CR 被探索为当前频谱稀缺范式的技术解决方案。FD 操作通过更高的吞吐量和优化的传感时间进一步增强了 CR 的性能。战术无线电传统上在许可频段内运行。为了满足不断增长的需求，正在探索替代方法以在战术用户之间共享频谱。在本文中，提出了一种集成了三频操作和动态频谱整形的 FD-CR 用于战术通信。建议的无线电在 Zynq SDR 平台中实现。