面向手持小型终端的软件无线电体系结构研究与设计

发布时间：2018-05-18 18:37

本文选题：软件无线电 + 手持终端　；参考：《国防科学技术大学》2014年硕士论文

【摘要】：软件无线电的核心思想是设计标准化的硬件平台,使用软件来描述通信系统中的各模块功能,并通过在通用硬件平台上加载不同软件来实现各种通信制式功能切换。软件无线电克服了传统通信设备开发周期长,移植和升级成本高、难度大,兼容性差等问题。另一方面,微电子技术的迅速发展使通信设备向便携式、小型化方向发展,人们对手持小型设备的需求在迅速增加。因此手持小型软件无线电设备具有广阔的应用前景。手持小型终端通常在尺寸、体积、功耗和处理能力等方面受到限制,硬件组成上一般所有器件模块都集中于同一个物理板卡上,设备数量相对也较少。针对手持小型终端的特点,本文研究了在手持小型终端上应用软件无线电思想的方案,设计了适应小型设备的软件无线电体系结构,该体系结构既能保证系统灵活性和可移植性等要求,又能有效避免资源浪费,提高资源利用率。本文主要面向手持小型终端的应用需求,针对软件无线电体系结构的核心框架和中间件技术展开研究和设计。首先,借鉴SCA规范中对核心框架的定义,采用接口轻量化、接口可选择继承、静态部署和波形预安装等思想,设计了适用于手持小型平台的轻量化核心框架;其次,针对共享内存的应用场景,设计了基于共享内存的自定义中间件,以避免采用CORBA中间件导致巨大资源开销和传输延时,以满足手持小型平台在内存资源和启动时间方面的需求。最后,针对一个手持平台样机,设计了一个测试波形,提出了一套关于本文设计的软件平台的功能验证方案。
[Abstract]:The core idea of software radio is to design a standardized hardware platform, using software to describe the functions of each module in the communication system, and to implement the function switching of various communication systems by loading different software on the general hardware platform. Software radio overcomes the problems of long development period, high cost of transplantation and upgrade, high difficulty and poor compatibility of traditional communication equipment. On the other hand, with the rapid development of microelectronic technology, the communication equipment is becoming portable and miniaturized, and the demand for small handheld devices is increasing rapidly. Therefore, handheld small software radio equipment has a broad application prospect. Small handheld terminals are usually limited in size, volume, power consumption and processing capacity. Generally, all device modules are concentrated on the same physical card in hardware composition, and the number of devices is relatively small. According to the characteristics of small handheld terminals, this paper studies the scheme of applying software radio to small handheld terminals, and designs a software radio architecture suitable for small devices. The architecture can not only guarantee the flexibility and portability of the system, but also effectively avoid the waste of resources and improve the utilization rate of resources. This paper focuses on the research and design of the core framework of software radio architecture and middleware technology for the application of small handheld terminals. First of all, referring to the definition of core framework in SCA specification, using the concepts of interface lightweight, interface alternative inheritance, static deployment and waveform pre-installation, a lightweight core framework suitable for handheld small platform is designed. Aiming at the application scenario of shared memory, a custom middleware based on shared memory is designed to avoid the huge resource overhead and transmission delay caused by using CORBA middleware, so as to meet the needs of portable small platform in memory resources and startup time. Finally, a test waveform is designed for a handheld platform prototype, and a functional verification scheme of the software platform designed in this paper is proposed.
【学位授予单位】：国防科学技术大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TN92

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