数字ALC技术在高速跳频通信中的应用

Application of Digital ALC Technology in High Speed Frequency Hopping Communication

介绍了无线通信中的功率发射控制原理及其作用。针对模拟ALC(Automatic level control自动电平控制)技术在高速跳频通信的局限性,提出了一种数字化的ALC功率控制方法。该方法基于大规模可编程器件(FPGA)、高速AD、大容量存储器和可编程数控衰减器,通过闭环控制算法,实现了快速可靠的大功率发射控制。应用该技术到某款宽频无线跳频通信设备中,测试结果表明数字ALC控制技术性能优于模拟ALC。

The theory of power emission control in wireless communication is introduced. In view of the limitation of ALC technology in high speed frequency hopping communication system, a method of digital power control is proposed. The method is based on the FPGA, large capacity memory, high speed AD and programmable digital attenuator, which can achieve fast and reliable high power control. In the application of this technology to a broadband frequency hopping communication device, the test results show that the performance of digital ALC is better than that of analog ALC technology.