基于matlab的td-scdma通信系统的仿真与设计.docVIP

基于MATLAB的通信系统仿真程序设计 —TD-SCDMA的调制与解调 摘 要 无线通信是当今通信领域中最为活跃的研究热点之一。TD-SCDMA(时分同步码分多说址)，作为我国提出的第三代移动通信标准，为我们提供了源于通信理论的想法在实际中具有重大影响的具体明。近10年的研究工作已产生了关于如何在无线通信信道中进行通信的更为丰富的设想、观点和工具，并且所描绘的图景仍在不断地发展变化。 TD-SCDMA目前已完成了标准的专家组评估、国际电联认可并发布、与3GPP(第三代伙伴项目)体系的融合、新技术特性的引入等一系列的国际标准化工作，从而使TD－SCDMA标准成为第一个由中国提出的，以我国知识产权为主的、被国际上广泛接受和认可的无线通信国际标准。这是我国电信史上重要的里程碑。 本文主要对TD-SCDMA系统调制解调基本原理进行深入学习，在此基础上对一个简单的TD-SCDMA系统进行仿真研究。本文首先介绍了通信系统仿真的一般知识，接着对MATLAB仿真技术的特点进行了阐述。其次主要对TD-SCDMA进行简单的介绍。再次对QPSK调制解调的基本原理进行了比较深刻的分析。接着本文将讨论TD-SCDMA系统的基本原理，为仿真案例打下理论基础。最后主要对一个简单的TD-SCDMA系统进行仿真，并得出仿真结果。 关键词：TD-SCDMA，MATLAB仿真，QPSK调制解调，3G THE DESIGN OF SIMULATION PROGRAM OF COMMUNICATION SYSTEM BASED ON MTALAB —TD-SCDMA MODULATION AND DEMODULATION ABSTRACT Wireless communication is one of the most active research focus in communication field nowadays. TD-SCDMA(Time Division-Synchronous Code Division Multiple Access）,as Chinas third generation mobile communication standard, has provided us with specific instructions which ideas from communication theory have a significant impact in practice. Nearly 10 years of research work has been produced on how to communicate in the wireless communication channel more abundant ideas, perspectives and tools, and the picture painted continues to evolve. TD-SCDMA standard has now been completed expert assessment, the ITU approved and published, with the 3GPP (Third Generation Partnership Project) system integration, introduction of new technology features a series of international standardization. So that TD-SCDMA standard as the first made by China to our intellectual property-based, been widely accepted and recognized international standard for wireless communications. This is an important milestone in the history of China Telecom. In this paper, on the TD-SCDMA system, we chiefly depth study the basic principles of modulation and demodulation, and on the basic of it do a simulation research on a simple TD-SCDMA system. This paper firstly introduces the general knowle