TD-SCDMA系统物理层控制信道关键技术研究与实现

发布时间：2018-05-10 17:14

本文选题：TD-SCDMA + 控制信道　；参考：《华南理工大学》2013年硕士论文

【摘要】：TD-SCDMA是我国具有自主知识产权的系统标准。本文介绍了移动无线通信系统的发展过程，，从最初产生到第一代移动通信技术（1G），第二代移动通信技术（2G），第三代移动通信技术（3G）以及第四代移动通信技术（4G）的演变。3G技术主要包括了WCDMA、CDMA2000、TD-SCDMA和WiMAX技术。本文着重介绍了3G中TD-SCDMA系统，TD-SCDMA系统的主要特点是采用了TDD方式并且综合了CDMA的优点，灵活的空中接口，使用智能天线等新技术。根据2GHz TD-SCDMA数字蜂窝移动通信网高速下行分组接入Uu接口物理层技术要求，本文从物理信道和传输信道到物理信道的映射、复用与信道编码、扩频和调制以及物理过程介绍了TD-SCDMA系统的物理层结构。本文针对TD-SCDMA系统从控制信道关键技术进行讨论研究。主要讨论了上行同步信道UPPCH、寻呼指示信道PICH和下行共享控制信道HS-SCCH：对于UPPCH，从同步信道与突发结构、同步过程以及同步序列三个方面进行阐述，接下来讨论了上行同步的算法，采用简化算法对上行同步进行了仿真与实现，以及结果对比。对于PICH，介绍了寻呼指示到PICH的信道映射，基于多帧基础的PICH帧结构。对PICH信道进行实现。对于HS-SCCH，介绍了单载波HS-SCCH信道编码与复用的步骤包括信道的复用、附加CRC、信道编码、速率匹配、HS-SCCH的交织、物理信道映射。并针对每个模块进行了实现，实现了其功能。
[Abstract]:TD-SCDMA is a system standard with independent intellectual property rights in China. This paper introduces the development process of mobile wireless communication system, from the initial generation to the first generation mobile communication technology (1G), the second generation mobile communication technology (2G), the third generation mobile communication technology (3G) and the fourth generation of mobile communication technology (4G), which mainly include the WCDM A, CDMA2000, TD-SCDMA and WiMAX technology. This article focuses on the introduction of TD-SCDMA system in 3G. The main features of the TD-SCDMA system are the adoption of TDD mode and the integration of the advantages of CDMA, flexible air interface, and the use of smart antennas. The 2GHz TD-SCDMA digital cellular mobile communication network has access to the physical layer technology of the Uu interface. The physical layer of the TD-SCDMA system is introduced from the physical channel and the transmission channel to the physical channel, the multiplexing and channel coding, the spread spectrum and modulation, and the physical process.
This paper discusses the key technology of the TD-SCDMA system from the control channel, mainly discusses the uplink synchronization channel UPPCH, the paging indicator channel PICH and the downlink shared control channel HS-SCCH:
For UPPCH, from three aspects of synchronization channel and burst structure, synchronization process and synchronization sequence, the algorithm of uplink synchronization is discussed, and the simplification algorithm is used to simulate and implement the uplink synchronization, and the result is compared.
For PICH, the channel mapping of paging indication to PICH is introduced, and the PICH frame structure based on multi frame is implemented. The PICH channel is implemented.
For HS-SCCH, the steps of single carrier HS-SCCH channel coding and multiplexing are introduced, including channel multiplexing, additional CRC, channel coding, rate matching, interleaving of HS-SCCH, physical channel mapping, and implementation of each module to realize its function.

【学位授予单位】：华南理工大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TN929.5

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