软件无线电技术及其应用

本文从软件无线电的概念,软件无线电的关键技术,软件无线电的优势,软件无线电技术的应用以及软件无线电技术的发展概况等方面,详细地介绍了软件无线电技术及其应用。     

软件定义无线电的应用与发展

软件定义无线电作为一种无线通信技术,可应用于探测无线电信号质量和探索无线电信号等应用场景。本文首先介绍了无线电信号特征在信号源定位,无线电监测和信号源身份识别中的应用研究,进一步分析了软件无线电的系统架构对无线电信号高质量接收的影响,给出了软件无线电在教学上的应用实例,最后总结了软件无线电在技术应用,系统设计和工程实践中的发展现状,并给出了未来软件定义无线电的发展预测。     

软件无线电中的关键技术及平台构建初探

介绍了软件无线电的概念、发展历史和现状。分析了软件无线电系统的结构和软件无线电的关键技术,提出了解决软件无线电难点问题的方法,并提出了构建虚拟无线电工作平台的初步设想。     

软件无线电及其实现方案

本文介绍软件无线电技术,并分析了实现软件无线电的关键,给出了基于目前器件技术水平的中频软件无线电实现的最佳方案,最后指出软件无线电技术的美好前景。     

软件无线电技术在军事领域的应用

概要介绍了软件无线电技术产生、发展的背景和现状.描述了软件无线电的工作原理,对软件无线电技术和传统无线电技术的优缺点进行了比较.并对软件无线电技术的先进性、经济性以及未来的发展趋势进行了探讨.     

软件无线电在无线电监测中的应用分析

在我国加入世贸组织之后,更多的外国企业进入国内的通信市场当中,对于国内的无线电事业而言,既是机遇,同时也是挑战。得益于改革开放政策的影响,我国的无线电发展十分迅速。处于此种环境当中,软件无线电应运而生,有效攻克了许多难题。因此,加大软件无线电在无线电监测中应用的力度十分关键。本文通过阐释软件无线电的概念,提出了软件无线电在无线电监测中的具体应用措施,从而有效提升软件无线电在无线电监测中应用的总体水平。     

软件无线电在无线电监测领域中的应用

随着软件无线电技术的高速发展,软件无线电在无线电监测领域应用也愈加广泛。文章简要介绍了软件无线电工作原理,重点阐述了在网络上兴起的软件无线电在飞机飞行追踪、短波监测测向等方面的应用,为开展日常无线电监测工作提供相关思路借鉴。     

软件无线电及其实现方案的研究

在介绍软件无线电的产生、基本概念和系统结构的同时,分析了实现软件无线电的关键技术,并给出了基于目前器件技术水平的中频软件无线电流程框图的折衷方案,最后指出软件无线电技术的美好前景。     

软件无线电技术的现状与发展趋势

自20世纪90年代初以来,移动通信领域一场新的技术革命悄然兴起,这就是以软件无线电为特征的新一代通信系统研究与开发。软件无线电(SWR)技术是第三代移动通信系统和军用电台的发展趋势。文章主要介绍了软件无线电的概念、软件无线电的关键技术、软件无线电的应用和软件无线电的发展趋势。     

软件无线电分层体系结构

介绍一种用来设计可重构平台的软件无线电体系结构,叫做软件无线电分层体系结构。这种结构引入了软件无线电的所有特征,并使复杂的问题简单化,是一个开放的、统一的、正式的体系结构,适合于软件无线电系统的标准化,有利于软件无线电体系结构的统一。     

软件无线电技术

本简单介绍了软件无线电技术的产生原因及其优越性，分析了制约软件无线电技术发展的几个因素，同时介绍了软件无线电技术在第三代移动通信中的应用，最后的指出软件无线电技术的美好前途。     

SDR——未来无线通信设备的基本概念

根据国际上的最新进展,本文对软件定义无线电（SDR）进行讨论和介绍。SDR是一个新的概念和体系,它是一个可重编程的可重构的,能支持多种无线通信体制和标准的无线通信设备。本文介绍了美国对SDR设备的要求,此技术为产品开发、制造商、运营商及最终用户带来了好处,以及SDR所面临的挑战。显然,在几年内,SDR技术将广泛使用于新一代通信产品的设计中,基于SDR的无线通信设备将成为市场中的主要部分。     

Analysis and implementation of six-port software-defined radio receiver platform

With recent advances in semiconductor processing technology and the development of reconfigurable devices, high bit-rate software-defined radio (SDR) has become practical for commercial applications. This paper proposes an SDR receiver platform based on a new substrate integrated waveguide six-port structure. This SDR receiver platform operates from 22 to 26 GHz and it is designed to be robust, low cost, and suitable for different communication schemes. In this study, the receiver is demonstrated to support quadrature phase-shift keying and 16 quadrature amplitude modulation schemes. System-level simulation is made and prototype circuits are fabricated to evaluate the system performance. It is found that the combination of SDR and six-port technology can provide a great flexibility in system configuration, a significant reduction in system development cost, and also a high potential for software reuse. The proposed receiver shows a possible application of universal direct demodulator for future SDR terminals in various wireless communication systems.     

Software Defined Radio Technology for Highly Reliable Wireless Communications

This paper introduces the concept of highly dependable wireless communications for wireless robotics based on software defined radio (SDR) technologies. The features and advantages of SDR technologies are initially explained, whereupon the research and development activities of KDDI R&D Laboratories are presented. Advanced applications of SDR for telerobotic control, which require highly reliable wireless communications and for multi-mode wireless sensor networks are proposed as potential markets for wireless robotics and machine to machine communication. Finally, the current status and research issues of SDR are summarized and this paper is concluded.     

An Approach to T&E of Military SDR Platforms and Waveforms: the LANCERS Lab

Software Defined Radio (SDR) is currently one of the main topics of interest in military communications, as well as in civil ones. Since 2002, the Italian Ministry of Defense (MoD) has identified the SDR technology as a strategic capability. In this respect, Italy has become part of the major multinational programs related to military SDR and waveforms, such as ESSOR (European Secure Software Radio) and COALWNW (COALition Wideband Networking Waveform). In addition, the Italian national SDR program (SDR-N) aims at developing a complete family of SDR products, part of which are already available for fielding. In order to develop a governmental capability of Test and Evaluation (T&E) for future SDR, minimizing the risks related to the fielding of this new technology, a dedicated laboratory, called LANCERS lab, has been established in the premises of CSSN ITE (Centro Supporto e Sperimentazione Navale Istituto per le Telecomunicazioni e lElettronica), a research center of the Italian Navy. LANCERS lab gathers the expertise of military technical personnel and University researchers, to provide a twofold capability: developing T&E strategies and procedures for the new tactical communications based on SDR and maintaining knowledge about the state of the art of SDR, fostering new research and development. In this paper we describe the LANCERS lab in all the following aspects: plan of development, organization, current activities, and future perspectives.     

软件无线电标准符合性测试系统设计

随着软件无线电技术的迅速发展,越来越多厂家开展了基于软件无线电标准的技术研究和产品研制.由于各厂家对标准的理解不一致,研制软件产品的实现存在差异,导致未经符合性测试的软件之间不能相互兼容,需花费大量时间来进行波形移植开发和系统集成.针对该问题,提出了一种软件无线电系统标准符合性测试系统的实现方式,给出了系统测试内容、测...     

软件无线电在测试仪器中的应用

分析了目前软件无线电在测量仪器领域发展的新趋势,并以N5530S测量接收机系统为例介绍了软件无线电在测试仪器及系统中的应用原理及方法。     

一种基于软件无线电的GMSK信号调制方式的实现

随着无线通信技术的发展,各个系统的兼容性、可升级性、自适应性问题突出,针对这些问题,软件无线电的概念已广泛应用于无线通信基带系统的设计领域,文章的主要工作是设计了一个软件无线电的硬件平台,并且在该平台之上实现信号的GMSK调制.     

Open-Source SCA-Based Core Framework and Rapid Development Tools Enable Software-Defined Radio Education and Research

This article describes the Open Source SCA Implementation::Embedded project, an open source software development kit designed for rapid prototyping of software defined radios consistent with the software communications architecture. The SCA is a product of the American military's SDR acquisition program and has played a large role in SDR development in the military and in the wireless industry. OSSIE was designed for use in wireless communications curricula and research efforts, so it is easy to learn and illustrative of software engineering, programming, and communications engineering concepts important in industrial practice today. OSSIE includes a core framework (i.e., common services enumerated in the SCA). It also includes graphical user interface-oriented tools that are easily learned and free to download and use. The tools auto-generate SCA-specific component source code and supporting files, leaving the developer to provide signal processing functionality. In addition, visualization tools for debugging and a growing library of SDR software components are available. Discussed herein are examples of SDRs designed using OSSIE, including embedded applications. OSSIE enables easy transition from concepts to practice in SDR design for communications engineers who may not have a strong software background.     

A framework for secure download for software-defined radio

This article proposes a framework for establishing secure download for software-defined radio (SDR) that follows the current recommendations of SDR-related organizations, and can be employed in a variety of SDR architectures. The main goals of the security system are verification of the declared identity of the source that produces the software to be downloaded, control and verification of integrity of the downloaded data, disabling of the ability to run unauthorized software on the software-defined terminal, and secrecy of the transmitted data to prevent problems such as loss of intellectual property contained in the software. The system includes the following parties: manufacturers of the terminal hardware and software; government authorities relevant for SDR and users of SDR terminals. The underlying ideas for system development include employment of four different cryptographic techniques and tamper-resistant hardware. The cryptographic techniques employed are a secret key encryption technique, a public key encryption technique, a technique for cryptographic hashing, and a technique for digital signature. An important feature of the system is that it provides the possibility to exchange cryptographic components in an automatic manner. The proposed system is flexible, highly secure to protect both users and manufacturers, and provides a framework for the secure commercial implementation of SDR