本文選題：軟件無線電 + 虛擬無線電　； 參考：《南昌航空大學》2013年碩士論文

【摘要】：隨著通信技術的迅猛發(fā)展，新的通信體制與標準的不斷出臺，出現(xiàn)了新舊通信系統(tǒng)標準共存的局面，使得各種通信系統(tǒng)的互連互通變得更加的復雜。為了滿足設備的互通問題，縮短開發(fā)周期，降低開發(fā)成本，人們提出了通過軟件方式來實現(xiàn)無線通信的虛擬無線電概念。本文結合了虛擬無線電涉及的一些關鍵技術和基礎理論，基于虛擬無線電架構，設計了一種基于PCI Express總線接口的虛擬無線電射頻前端板卡。 本文利用PCI Express高速總線接口作為PC與射頻前端板卡的數(shù)據(jù)傳輸接口，并使用高效的DMA工作機制，實現(xiàn)總線接口間高數(shù)據(jù)速率、低時延的數(shù)據(jù)交互。射頻前端的設計采用直接變頻的架構，有效的提高了前端集成度，并將射頻部分，接口部分和FPGA控制部分有效的集成到一塊板子上。 文中給出了虛擬無線電射頻前端的基本結構和模塊組成，重點闡述了整個射頻前端的硬件設計關鍵技術及FPGA本地控制邏輯。其中，硬件部分主要包括：FPGA模塊、電源模塊、時鐘模塊、PCIe模塊和射頻模塊，并給出相應電路原理圖設計；FPGA部分主要包括DMA控制模塊、天線模塊、數(shù)據(jù)緩沖處理模塊、參數(shù)配置模塊和定時控制模塊，并給出各模塊時序仿真圖。文中還對所設計的射頻前端板卡進行了測試，并對測試結果進行了分析和總結。 經(jīng)實踐驗證，本文設計的虛擬無線電射頻前端在中頻段（700MHz-900MHz）范圍發(fā)射和接收性能較好，通過修改相應的應用程序以及FPGA程序，，即可在一塊射頻前端板卡下實現(xiàn)協(xié)議的切換。該射頻前端板卡具有良好的通用性，在軟件無線電系統(tǒng)中，可作為射頻前端進行無線信號的接收和發(fā)送，作為無線接入網(wǎng)卡設備、無線系統(tǒng)試驗設備來使用；還可用于構建行業(yè)專網(wǎng)通信系統(tǒng)。
[Abstract]:With the rapid development of communication technology, the new communication system and standards have been introduced constantly, and the coexistence of new and old communication system standards has emerged, which makes the interconnection of various communication systems more complex. In order to meet the problems of interworking of devices, shorten the development cycle and reduce the development cost, the concept of virtual radio is put forward to realize wireless communication by software. This paper combines some key technologies and basic theories of virtual radio, and designs a virtual radio RF front-end card based on PCI Express bus interface based on virtual radio architecture. In this paper, the PCI Express high-speed bus interface is used as the data transmission interface between PC and RF front-end card, and an efficient DMA working mechanism is used to realize the high data rate and low delay data exchange between the bus interfaces. The design of RF front-end adopts the architecture of direct frequency conversion, which effectively improves the integration of the front-end, and integrates the RF part, interface part and FPGA control part into a board effectively. In this paper, the basic structure and module composition of the virtual radio RF front-end are given, and the key technology of hardware design and FPGA local control logic of the whole RF front-end are described emphatically. Among them, the hardware part mainly includes: FPGA module, power module, clock module PCIe module and radio frequency module. The corresponding circuit schematic design and FPGA part mainly include DMA control module, antenna module, data buffer processing module. Parameter configuration module and timing control module, and each module timing simulation diagram. The design of RF front-end card is also tested, and the test results are analyzed and summarized. It is proved by practice that the virtual radio RF front-end designed in this paper has good transmitting and receiving performance in the middle frequency range (700MHz-900MHz). By modifying the corresponding application program and FPGA program, the protocol switching can be realized under a RF front-end card. The RF front-end card has good versatility. In the software radio system, it can be used as the RF front-end to receive and transmit wireless signals, as a wireless access network card device, and as a wireless system test device. It can also be used to build a private network communication system.
【學位授予單位】：南昌航空大學
【學位級別】：碩士
【學位授予年份】：2013
【分類號】：TN925;TP334.7

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本文編號：2073412