基于多核技术的LTE系统UE端的物理层开发
发布时间：2018-09-12 07:51
【摘要】：由我国提出的、并经ITU批准的三个第三代移动通信标准之一的TD-SCDMA技术,我国对其拥有完全的自主知识产权。同时,TD-SCDMA技术广泛的被世界上大部分地区和国家所接受和认可。TD-SCDMA最终演进为LTE TDD标准。开发具有高性价比的TD-LTE手机对完善TD-LTE产业链和促进TD-LTE商用具有极为重要的意义。 本文首先介绍了LTE标准的制定过程和标准的研究现状,重点介绍了TD-LTE标准的优势及现阶段面临的主要问题及未来的发展趋势。其次对TD-LTE上行无线帧结构、上行物理信道及物理信号做了详尽的分析。再次,从硬件设计和软件设计两个角度重点介绍了本文设计的UE终端。针对ARM微处理器使用的AMBA,总线体系结构实现较复杂的缺点,结合软核SoC系统对外设可灵活的配置和裁剪的优点,本文实现了一种片上总线设计；同时针对射频驱动程序需要配置大量数据常量的特点,本文在深入研究ARM体系结构的基础上实现了一种优化的射频器件驱动程序设计方案,可有效缩减代码量；同时采用共享内存的设计方案,实现多核之问的通信。然后,在Modelsim仿真平台下,对PUCCH信道、PUSCH信道及探测参考信号进行硬件仿真。在简要介绍用于安捷伦X系列信号分析仪的N9082A LTE TDD测试软件基础上,用该软件对本文设计的SoC系统进行了测试,测试结果符合3GPP标准要求。最后,对论文做的工作进行了总结概括,并对以后的研究方向做了简要介绍。
[Abstract]:The technology of TD-SCDMA, one of the three third generation mobile communication standards proposed by China and approved by ITU, has completely independent intellectual property rights in China. At the same time, the technology of TD-SCDMA is widely accepted and recognized by most regions and countries in the world. The machine is of great significance for improving TD-LTE industry chain and promoting TD-LTE business.
Firstly, this paper introduces the formulation process of LTE standard and the research status of LTE standard, and focuses on the advantages of TD-LTE standard, the main problems faced at present and the future development trend. Secondly, the uplink wireless frame structure, uplink physical channel and physical signals of TD-LTE are analyzed in detail. Thirdly, the hardware design and software design are discussed. The UE terminal designed in this paper is introduced emphatically from the angle of view.In view of the shortcomings of AMBA used by ARM microprocessor and the complexity of bus architecture implementation, a kind of on-chip bus design is realized by combining the advantages of flexible configuration and tailoring of peripherals in soft-core SoC system. In this paper, an optimized RF device driver design scheme based on ARM architecture is implemented, which can effectively reduce the amount of code. At the same time, a shared memory design scheme is adopted to realize multi-core communication. Based on the brief introduction of N9082A LTE TDD testing software for Agilent X series signal analyzer, the SoC system designed in this paper is tested with this software. The test results meet the requirements of 3GPP standard. Finally, the work done in this paper is summarized and the future research directions are briefly introduced.
【学位授予单位】：北京邮电大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TN929.5
本文编号：2238380
[Abstract]:The technology of TD-SCDMA, one of the three third generation mobile communication standards proposed by China and approved by ITU, has completely independent intellectual property rights in China. At the same time, the technology of TD-SCDMA is widely accepted and recognized by most regions and countries in the world. The machine is of great significance for improving TD-LTE industry chain and promoting TD-LTE business.
Firstly, this paper introduces the formulation process of LTE standard and the research status of LTE standard, and focuses on the advantages of TD-LTE standard, the main problems faced at present and the future development trend. Secondly, the uplink wireless frame structure, uplink physical channel and physical signals of TD-LTE are analyzed in detail. Thirdly, the hardware design and software design are discussed. The UE terminal designed in this paper is introduced emphatically from the angle of view.In view of the shortcomings of AMBA used by ARM microprocessor and the complexity of bus architecture implementation, a kind of on-chip bus design is realized by combining the advantages of flexible configuration and tailoring of peripherals in soft-core SoC system. In this paper, an optimized RF device driver design scheme based on ARM architecture is implemented, which can effectively reduce the amount of code. At the same time, a shared memory design scheme is adopted to realize multi-core communication. Based on the brief introduction of N9082A LTE TDD testing software for Agilent X series signal analyzer, the SoC system designed in this paper is tested with this software. The test results meet the requirements of 3GPP standard. Finally, the work done in this paper is summarized and the future research directions are briefly introduced.
【学位授予单位】：北京邮电大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TN929.5
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