一种自适应波束形成器的设计与研究

发布时间：2018-04-25 12:38

  本文选题：波束形成器 + FPGA　； 参考：《云南大学》2012年硕士论文

【摘要】：随着现代移动通信技术的飞速发展,智能天线发挥着越来越重要的作用。作为智能天线关键技术的自适应波束形成技术,成为了研究的热点。而自适应波束形成技术的关键是自适应算法,自适应算法是利用数学模型描述自适应过程的算法。自适应算法可以利用硬件或软件两种方法实现。所谓的硬件实现是根据所选算法的计算过程进行电路的设计。自适应算法有很多,选择合适的自适应算法很重要,它决定了设计系统的性能。本文选取了SLC-LSCMA算法,该算法在收敛性方面较好。 在普通天线波束形成的基础上,引入自适应算法技术建立起来的自适应波束形成技术,在阵列信号处理方向发挥着关键作用。当前流行的FPGA整合了常用功能,内部资源丰富,为硬件开发提供了良好的环境。 针对上述论述,本文以无线通信技术、计算机技术以及嵌入式技术为基础,实现了一种自适应波束形成器。本文首先根据算法的标准选取了一种优化算法,并给出了算法的基本计算过程。其次建立了完整的智能天线模型,重点对优化的各个模块进行了介绍。然后采用Altera公司生产的Cyclone II系列EP2C35F672C6芯片为主芯片,利用QuartusⅡ作为硬件开发平台,采用自下而上的渐进式编译流程对硬件电路进行了详细描述,继而在顶层文件中集成各个优化后的模块,再进行总体研究。最后在ModelSim SE上进行了仿真,验证了该自适应波束形成器的正确性并对系统进行了评价。
[Abstract]:With the rapid development of modern mobile communication technology, smart antenna plays an increasingly important role. As the key technology of smart antenna, adaptive beamforming has become a hot topic. The key of adaptive beamforming is adaptive algorithm, which uses mathematical model to describe adaptive process. The adaptive algorithm can be implemented by hardware or software. The so-called hardware implementation is to design the circuit according to the calculation process of the selected algorithm. There are many adaptive algorithms. It is very important to select suitable adaptive algorithms, which determines the performance of the design system. In this paper, SLC-LSCMA algorithm is selected, which has good convergence. On the basis of common antenna beamforming, adaptive beamforming technique based on adaptive algorithm is introduced, which plays a key role in array signal processing. The current popular FPGA integrates common functions and rich internal resources, which provides a good environment for hardware development. Based on wireless communication technology, computer technology and embedded technology, an adaptive beamformer is implemented in this paper. This paper first selects an optimization algorithm according to the standard of the algorithm, and gives the basic calculation process of the algorithm. Secondly, a complete smart antenna model is established, and the optimized modules are introduced. Then the Cyclone II series EP2C35F672C6 chip produced by Altera Company is used as the main chip and Quartus 鈪，

本文编号：1801373