發(fā)布時間：2018-04-25 12:38

  本文選題：波束形成器 + FPGA　； 參考：《云南大學》2012年碩士論文

【摘要】：隨著現(xiàn)代移動通信技術的飛速發(fā)展,智能天線發(fā)揮著越來越重要的作用。作為智能天線關鍵技術的自適應波束形成技術,成為了研究的熱點。而自適應波束形成技術的關鍵是自適應算法,自適應算法是利用數(shù)學模型描述自適應過程的算法。自適應算法可以利用硬件或軟件兩種方法實現(xiàn)。所謂的硬件實現(xiàn)是根據(jù)所選算法的計算過程進行電路的設計。自適應算法有很多,選擇合適的自適應算法很重要,它決定了設計系統(tǒng)的性能。本文選取了SLC-LSCMA算法,該算法在收斂性方面較好。 在普通天線波束形成的基礎上,引入自適應算法技術建立起來的自適應波束形成技術,在陣列信號處理方向發(fā)揮著關鍵作用。當前流行的FPGA整合了常用功能,內部資源豐富,為硬件開發(fā)提供了良好的環(huán)境。 針對上述論述,本文以無線通信技術、計算機技術以及嵌入式技術為基礎,實現(xiàn)了一種自適應波束形成器。本文首先根據(jù)算法的標準選取了一種優(yōu)化算法,并給出了算法的基本計算過程。其次建立了完整的智能天線模型,重點對優(yōu)化的各個模塊進行了介紹。然后采用Altera公司生產(chǎn)的Cyclone II系列EP2C35F672C6芯片為主芯片,利用QuartusⅡ作為硬件開發(fā)平臺,采用自下而上的漸進式編譯流程對硬件電路進行了詳細描述,繼而在頂層文件中集成各個優(yōu)化后的模塊,再進行總體研究。最后在ModelSim SE上進行了仿真,驗證了該自適應波束形成器的正確性并對系統(tǒng)進行了評價。
[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，

本文編號：1801373