随着无线通信技术的高速发展,需要对大量的信号及数据进行高效、快速、可操作性更高且相对低成本的处理,这便对无线通信系统提出了更高的要求。软件定义无线电(Software Defined Radio,SDR)是一种软硬结合的无线电广播通信技术,它使用...随着无线通信技术的高速发展,需要对大量的信号及数据进行高效、快速、可操作性更高且相对低成本的处理,这便对无线通信系统提出了更高的要求。软件定义无线电(Software Defined Radio,SDR)是一种软硬结合的无线电广播通信技术,它使用软件来调节无线通信使用的硬件参数,而非通过修改硬件元器件实现。频带、空中接口协议和功能都可以通过软件下载和更新来升级,而不用反复更换硬件。笔者在开源SDR平台HackRF和免费的开源软件无线电开发平台工具GNURadio的基础上,通过软硬件强大的信号处理功能在PC端对HackRF开发板的信号进行编解码、调制解调、时频域变换等处理,实现更为广泛的应用。展开更多
针对现有卫星通信中幅度相位键控(Amplitude Phase Shift Keying,APSK)调制方案依赖商用芯片或FPGA实现、且性能评估多局限于理想高斯信道的问题,提出基于开源软件定义无线电(Software Defined Radio,SDR)平台的动态可重构验证框架。以...针对现有卫星通信中幅度相位键控(Amplitude Phase Shift Keying,APSK)调制方案依赖商用芯片或FPGA实现、且性能评估多局限于理想高斯信道的问题,提出基于开源软件定义无线电(Software Defined Radio,SDR)平台的动态可重构验证框架。以数字视频广播卫星第二代(Digital Video Broadcasting-Satellite Second Generation,DVB-S2)标准为基准,在GNU Radio平台构建高阶调制-卫星信道联合仿真系统,支持16APSK与32APSK调制解调链路的灵活配置,深度集成Loo与Corazza模型以精确模拟多径时延、阴影衰落及多普勒频移特性。通过HackRF SDR硬件平台实现基带生成、射频收发至接收解调的端到端硬件在环验证。该框架可为6G天地一体化网络中高阶调制的频谱效率、抗衰落性能及功放非线性适应性研究提供可扩展实验平台。展开更多
随着无线通信技术的飞速发展,通信环境日趋复杂,信号种类繁多、传输方式灵活多变,给通信系统的测试、验证与监测带来了巨大挑战。传统的信号发生与监测设备通常专用性强、灵活性差、成本高、难以适应多种通信标准与频段的快速变化。针...随着无线通信技术的飞速发展,通信环境日趋复杂,信号种类繁多、传输方式灵活多变,给通信系统的测试、验证与监测带来了巨大挑战。传统的信号发生与监测设备通常专用性强、灵活性差、成本高、难以适应多种通信标准与频段的快速变化。针对这一问题,本文设计实现了一种基于软件无线电的通信信号模拟与监测系统。该系统采用C++作为开发语言,通过编写代码设计一个自主、可控的通信信号模拟与监测平台,并利用双缓冲区技术,有效提高频谱和波形界面的渲染效率,为现代无线通信系统的开发与维护提供了强有力的支持。With the rapid development of wireless communication technology, communication environments have become increasingly complex, with a wide variety of signal types and highly flexible transmission methods. This poses significant challenges for the testing, verification, and monitoring of communication systems. Traditional signal generation and monitoring equipment tends to be highly specialized, inflexible, costly, and poorly suited to the rapid evolution of various communication standards and frequency bands. To address this issue, this paper designs and implements a communication signal simulation and monitoring system based on software-defined radio (SDR). The system is developed in C++, creating an independent and controllable platform for communication signal simulation and monitoring. By employing a double-buffering technique, it effectively improves the rendering efficiency of the spectrum and waveform interfaces, providing strong support for the development and maintenance of modern wireless communication systems.展开更多
文摘随着无线通信技术的高速发展,需要对大量的信号及数据进行高效、快速、可操作性更高且相对低成本的处理,这便对无线通信系统提出了更高的要求。软件定义无线电(Software Defined Radio,SDR)是一种软硬结合的无线电广播通信技术,它使用软件来调节无线通信使用的硬件参数,而非通过修改硬件元器件实现。频带、空中接口协议和功能都可以通过软件下载和更新来升级,而不用反复更换硬件。笔者在开源SDR平台HackRF和免费的开源软件无线电开发平台工具GNURadio的基础上,通过软硬件强大的信号处理功能在PC端对HackRF开发板的信号进行编解码、调制解调、时频域变换等处理,实现更为广泛的应用。
文摘针对现有卫星通信中幅度相位键控(Amplitude Phase Shift Keying,APSK)调制方案依赖商用芯片或FPGA实现、且性能评估多局限于理想高斯信道的问题,提出基于开源软件定义无线电(Software Defined Radio,SDR)平台的动态可重构验证框架。以数字视频广播卫星第二代(Digital Video Broadcasting-Satellite Second Generation,DVB-S2)标准为基准,在GNU Radio平台构建高阶调制-卫星信道联合仿真系统,支持16APSK与32APSK调制解调链路的灵活配置,深度集成Loo与Corazza模型以精确模拟多径时延、阴影衰落及多普勒频移特性。通过HackRF SDR硬件平台实现基带生成、射频收发至接收解调的端到端硬件在环验证。该框架可为6G天地一体化网络中高阶调制的频谱效率、抗衰落性能及功放非线性适应性研究提供可扩展实验平台。
文摘随着无线通信技术的飞速发展,通信环境日趋复杂,信号种类繁多、传输方式灵活多变,给通信系统的测试、验证与监测带来了巨大挑战。传统的信号发生与监测设备通常专用性强、灵活性差、成本高、难以适应多种通信标准与频段的快速变化。针对这一问题,本文设计实现了一种基于软件无线电的通信信号模拟与监测系统。该系统采用C++作为开发语言,通过编写代码设计一个自主、可控的通信信号模拟与监测平台,并利用双缓冲区技术,有效提高频谱和波形界面的渲染效率,为现代无线通信系统的开发与维护提供了强有力的支持。With the rapid development of wireless communication technology, communication environments have become increasingly complex, with a wide variety of signal types and highly flexible transmission methods. This poses significant challenges for the testing, verification, and monitoring of communication systems. Traditional signal generation and monitoring equipment tends to be highly specialized, inflexible, costly, and poorly suited to the rapid evolution of various communication standards and frequency bands. To address this issue, this paper designs and implements a communication signal simulation and monitoring system based on software-defined radio (SDR). The system is developed in C++, creating an independent and controllable platform for communication signal simulation and monitoring. By employing a double-buffering technique, it effectively improves the rendering efficiency of the spectrum and waveform interfaces, providing strong support for the development and maintenance of modern wireless communication systems.
