基于TD-LTE移动通信系统的移频放大技术研究

发布时间：2018-10-22 20:08

【摘要】：随着战场环境和作战需求的变化以及通信技术的发展,现代战术通信系统正在逐步向着宽带化、高速化方向发展。民用通信技术近年来取得了长足进步,特别是TD-LTE第四代移动通信系统具有更快的数据传输速率,更高的频谱利用效率,更优的网络通信构架等特点,具备为战术通信现代化建设服务的条件。本研究课题基于TD-LTE移动通信系统,针对TD-LTE移动通信技术用于战术通信时存在的不足,通过频率变换、增大无线传输功率等技术的研究,进一步提高TD-LTE移动通信系统的传输距离,改善其抗干扰的能力,满足战术通信技术发展的需要。该技术研究实现了TD-LTE移动通信系统的从原有的通信频段搬移到UHF频段的低端部分,平均发射功率比原有系统提高10dB以上,在保持小区边缘的传输速率lOMbps的基础上,小区覆盖范围达到20公里以上。本文在内容安排上,首先总结了TD-LTE移动通信系统的体系结构,着重对课题研究涉及到的射频电路进行了分析。接着重点介绍了移频放大技术研究的实现过程,并且针对研究中的关键技术进行了阐述。最后,通过测试仿真和自主研发,本研究课题具体实现原理性样机并且完成相关功能性验证和性能指标测试。论文的最后总结研究成果,对不足的地方提出改进意见。该移频放大技术实现简单,通用性较高,具有广阔的市场应用前景。
[Abstract]:With the changes of battlefield environment and operational requirements and the development of communication technology, modern tactical communication systems are gradually developing towards broadband and high-speed. The civil communication technology has made great progress in recent years, especially the TD-LTE fourth generation mobile communication system has the characteristics of faster data transmission rate, higher spectral efficiency, better network communication framework, and so on. It has the conditions to serve the modernization of tactical communication. This research is based on TD-LTE mobile communication system, aiming at the shortage of TD-LTE mobile communication technology used in tactical communication, through the research of frequency conversion, increasing wireless transmission power and so on, the transmission distance of TD-LTE mobile communication system is further improved. Improve its anti-jamming ability to meet the needs of the development of tactical communication technology. This technique realizes the TD-LTE mobile communication system moving from the original frequency band to the low end part of the UHF band. The average transmission power is higher than that of the original system 10dB, and on the basis of keeping the transmission rate lOMbps of the cell edge, Community coverage of more than 20 km. In the aspect of content arrangement, the architecture of TD-LTE mobile communication system is summarized, and the RF circuit involved in the research is analyzed. Then, the realization process of frequency shift amplification technology is introduced, and the key technology of the study is expounded. Finally, through the test simulation and independent research and development, this research project realizes the principle prototype, and completes the related functional verification and performance index test. Finally, the paper summarizes the research results and puts forward some suggestions for improvement. The technology of frequency shift amplification is easy to realize and has high generality. It has a broad market application prospect.
【学位授予单位】：复旦大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TN929.5

【共引文献】