【作者】 李芹；

【导师】 孙毅；

【作者基本信息】 华北电力大学（北京） ， 通信与信息系统， 2011， 硕士

【摘要】 随着21世纪的到来,全球进入信息时代,人们对通信提出了更高更新的要求。TD-SCDMA是我国拥有自主知识产权的3G标准,在国内受到广泛而强烈的关注。本文主要研究了功率控制的基本原理和方法及其在TD-SCDMA系统中的运用,深入研究了内环功率控制方法和外环功率控制算法。在研究模糊控制理论的基础上,结合模糊控制和外环功率控制特征,提出了一种基于连续型模糊控制的外环功率控制算法。另外,本文研究了多源信息融合技术和模糊理论中的三角模算子,提出了一种基于三角模算子的外环功率控制算法。最后,基于MATLAB的Simulink平台,仿真实现了本文提出的两种外环功率控制算法。与已有的外环功率控制算法相比,本文算法具有步长设置合理、灵活,使SIR目标值尽量满足最低的业务质量要求,降低了对其它用户的干扰,保证了系统的良好性能,提高了系统容量,实验结果验证了算法的优越性。更多还原

【Abstract】 With the advent of the 21st century, the information period is coming, and higher and newer requirements are required by people for communications. TD-SCDMA, as one of the key technologies of 3G, is paid a great attention for its independent intellectual property rights in China.This paper is mainly focus on the research of power control principle and methods applied in TD-SCDMA system. Besides, the inner loop power control methods and outer loop power control algorithms are studied deeply. On the basis of research on the fuzzy control theory, an outer-loop power control algorithm based on continuous fuzzy control is proposed in this paper through the combination of fuzzy control and the characeristics of the outer-loop power control. Additionally, the basic theory of information fusion technology and t-norms are studied in this paper. An outer-loop power control algorithm based on t-norms is introduced. Finally, based on MATLAB and Simulink platform, the performance of the two proposed outer-loop power control algorithms are given through simulation. Compared with the existing outer-loop power control algorithms, the proposed algorithms can adjust the SIR target value with reasonable and flexible step-size, which can reduce interference to other users, ensure the good performance of the system, and improve the system capacity. The results of the experiment validate the advantages of the proposed algorithms.更多还原