TD-SCDMA物理层波形设计与软件无线电平台实现

发布时间：2018-07-03 02:39

本文选题：TD-SCDMA + 物理层　；参考：《电子科技大学》2014年硕士论文

【摘要】：软件无线电与传统无线电相比,具有硬件模块化、标准化,软件可重构、可编程等优势。因此,可以在软件无线电标准硬件平台上通过软件编程实现各种通信功能。TD-SCDMA是具有中国自主知识产权的移动通信技术,也是当今主流的3G标准之一,已经在商用中取得了成功。因此在软件无线电平台上开发TD-SCDMA波形具有现实意义。为此,论文采用自主研发的软件无线电平台(uSDR),对TD-SCDMA物理层波形进行开发与实现,具体工作如下:首先,分析了TD-SCDMA标准协议中的物理层部分,在协议研究的基础上对TD-SCDMA物理层波形进行目标分析,包括约束条件、设计目标和总体结构三个方面;其次,从工程实现的角度研究了物理层关键技术,包括直接序列扩频、上下变频、时间同步和信道估计。给出了波形的设计方案,从发射机和接收机两个方面对波形进行设计和仿真,其中,整体仿真在信噪比为8.0dB时误码率已降至10-3,满足语音通信的基本要求;最后,根据波形设计方案使用System Generator工具实现波形并对波形进行验证。实现部分给出了收发两端单元的信号描述、单元内部流程和单元间连接关系。验证部分通过功能模块验证和文件传输验证验证功能,通过误比特率验证和资源占用分析来评估性能。其中,误比特率验证结果比仿真低1.5dB。论文在软件无线电平台上设计并实现了TD-SCDMA物理层波形。提供了TD-SCDMA技术和软件无线电技术学习、实践的平台,可用于高等院校或科研机构教学实验。同时丰富了软件无线电平台的波形功能,为之后在软件无线电平台上进行更加复杂的波形开发提供了参考。
[Abstract]:Compared with traditional radio, software radio has the advantages of hardware modularization, standardization, software reconfigurable and programmable. Therefore, it is the mobile communication technology with Chinese independent intellectual property that can realize various communication functions by software programming on the hardware platform of software radio standard. It is also one of the mainstream 3G standards and has been successfully used in commercial applications. Therefore, it is of practical significance to develop TD-SCDMA waveform on software radio platform. Therefore, the paper develops and implements the physical layer waveform of TD-SCDMA by using the software radio platform (uSDR), which is developed by ourselves. The specific work is as follows: firstly, the physical layer part of TD-SCDMA standard protocol is analyzed. On the basis of protocol research, the target analysis of TD-SCDMA physical layer waveform is carried out, including constraint condition, design target and overall structure. Secondly, the key technology of physical layer, including direct sequence spread spectrum, is studied from the point of view of engineering implementation. Up-down conversion, time synchronization and channel estimation. The design scheme of waveform is given, and the waveform is designed and simulated from two aspects of transmitter and receiver. The overall simulation reduces the bit error rate to 10-3 when the SNR is 8.0dB, which meets the basic requirements of voice communication. According to the waveform design scheme, the system Generator tool is used to realize the waveform and verify the waveform. In the realization part, the signal description, the flow inside the unit and the connection between the units are given. The verification part evaluates the performance through function module verification and file transfer verification function, error bit rate verification and resource occupancy analysis. The result of error bit rate verification is 1.5 dB lower than that of simulation. In this paper, the physical layer waveform of TD-SCDMA is designed and implemented on the software radio platform. TD-SCDMA technology and software radio technology learning, practice platform, can be used in colleges and universities or scientific research institutions teaching experiments. At the same time, it enriches the waveform function of the software radio platform, and provides a reference for the development of more complex waveform on the software radio platform.
【学位授予单位】：电子科技大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TN929.53

【参考文献】