数字中频模块硬件设计

发布时间：2018-04-18 15:27

本文选题：LTE + 分布式基站　；参考：《武汉邮电科学研究院》2014年硕士论文

【摘要】：TD-LTE是目前移动通信领域研究的热点,是中国提出的具有自主知识产权的3G标准TD-SCDMA的后续标准,具有广阔的发展前景。同时分布式基站由于施工简单、布网灵活等多方面的优点,已成为目前3G、4G基站的主流解决方案。本论文以TD-LTE2天线射频拉远单元RRU项目的研发为背景,重点针对数字中频模块进行了研究。首先介绍了TD-LTE及分布式基站的发展背景,然后在详细分析了软件无线电中数字中频理论的基础上,根据本项目的需求提出了一种应用于TD-LTE2天线RRU中数字中频模块的硬件设计方案。本设计方案采用模块化的设计方式,将数字中频模块划分为电源模块、处理器模块、时钟模块、光接口模块、逻辑模块、混合电路模块六个主要模块,并详细描述了各个模块的主要功能和实现方式,以及信号处理的过程。在对功能实现和满足相关指标的基础上,综合考虑成本、效率等因素选择了相应的器件,详细设计了各个模块的硬件连接方式、外围电路以及对外接口。最后通过单盘调测并与TRX模块和模拟BBU系统进行了联调测试,该数字中频模块在RRU系统中可以稳定运行并达到相关指标,具有一定的实用价值。
[Abstract]:TD-LTE is a hot research topic in the field of mobile communication at present. It is the follow-up standard of 3G standard TD-SCDMA which has independent intellectual property rights put forward by China. It has a broad development prospect.At the same time, distributed base station has become the mainstream solution of 3G 4G base station because of its advantages of simple construction and flexible distribution.Based on the research and development of TD-LTE2 antenna RF remote unit RRU project, this paper focuses on digital if module.Firstly, the development background of TD-LTE and distributed base station is introduced, and then the theory of digital if in software radio is analyzed in detail.According to the requirements of this project, a hardware design scheme for digital if module in TD-LTE2 antenna RRU is proposed.The digital if module is divided into six main modules: power supply module, processor module, clock module, optical interface module, logic module and hybrid circuit module.The main function and realization mode of each module and the process of signal processing are described in detail.On the basis of realizing the function and meeting the related indexes, the corresponding devices are selected considering the cost and efficiency factors, and the hardware connection mode, peripheral circuit and external interface of each module are designed in detail.In the end, the digital if module can run stably in the RRU system and reach the relevant index through the single disc adjustment and test with the TRX module and the analog BBU system. It has certain practical value.
【学位授予单位】：武汉邮电科学研究院
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TN929.5

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