跳頻OFDM系統(tǒng)的設(shè)計(jì)與FPGA實(shí)現(xiàn)
發(fā)布時(shí)間：2018-12-28 06:43
【摘要】：跳頻OFDM (Orthogonal Frequency Division Multiplexing)是一種將跳頻技術(shù)與OFDM技術(shù)相結(jié)合的新型高速通信系統(tǒng),不僅具有跳頻技術(shù)的抗干擾能力強(qiáng)等優(yōu)點(diǎn),還具有OFDM技術(shù)較高頻譜利用率、抗多徑干擾等優(yōu)點(diǎn)。跳頻OFDM系統(tǒng)支持高速數(shù)據(jù)傳輸,是未來移動(dòng)通信發(fā)展的方向之一。本文以跳頻系統(tǒng)和OFDM系統(tǒng)的基本原理出發(fā),在詳細(xì)研究了跳頻系統(tǒng)的各項(xiàng)性能指標(biāo)和OFDM系統(tǒng)關(guān)鍵技術(shù)的基礎(chǔ)上,給出了跳頻OFDM通信系統(tǒng)的設(shè)計(jì)方案。采用64QAM映射完成數(shù)據(jù)映射；采用快速傅里葉變換完成OFDM調(diào)制和解調(diào)；采用DDS技術(shù)設(shè)計(jì)了跳頻器；采用低通濾波、碼元判決方式解出信源數(shù)據(jù)。本設(shè)計(jì)在Xilinx公司的ISE 10.1開發(fā)環(huán)境下,運(yùn)用Verilog硬件描述語言編程,采用Synplify Pro工具進(jìn)行綜合,并得到相應(yīng)的寄存器傳輸級(jí)(Register-Transfer Layer,RTL)的設(shè)計(jì)電路圖,通過Modelsim 6.5a仿真工具進(jìn)行功能仿真。最后將跳頻OFDM系統(tǒng)下載到Xilinx公司生產(chǎn)的Spartan-3E硬件平臺(tái),通過Chipscope在電腦端觀察測試結(jié)果,并對(duì)仿真及測試結(jié)果進(jìn)行分析。仿真與測試結(jié)果表明：設(shè)計(jì)的跳頻OFDM系統(tǒng)能夠正確實(shí)現(xiàn)64QAM映射和逆映射、OFDM調(diào)制和解調(diào)、跳頻和解跳、低通濾波和碼元判決等各個(gè)模塊功能,可以正確實(shí)現(xiàn)FH-OFDM信號(hào)的發(fā)送,部分實(shí)現(xiàn)FH-OFDM信號(hào)的接收,基本滿足對(duì)跳頻OFDM系統(tǒng)的設(shè)計(jì)要求。
[Abstract]:Frequency hopping (OFDM (Orthogonal Frequency Division Multiplexing) is a new high speed communication system which combines frequency hopping technology with OFDM technology. It not only has the advantages of strong anti-interference ability of frequency-hopping technology, but also has the advantages of high spectrum efficiency and anti-multipath interference of OFDM technology. Frequency-hopping OFDM system supports high-speed data transmission, which is one of the development directions of mobile communication in the future. Based on the basic principles of frequency hopping system and OFDM system, this paper presents the design scheme of frequency hopping OFDM communication system based on the detailed study of each performance index of frequency hopping system and the key technology of OFDM system. The 64QAM mapping is used to complete the data mapping, the fast Fourier transform is used to complete the OFDM modulation and demodulation, the frequency hopper is designed by using DDS technology, and the source data is solved by low-pass filtering and symbol decision. Under the development environment of ISE 10.1 of Xilinx Company, this design uses Verilog hardware description language to program, uses Synplify Pro tool to synthesize, and obtains the corresponding design circuit diagram of register transfer level (Register-Transfer Layer,RTL). The function is simulated by Modelsim 6.5a simulation tool. Finally, the frequency-hopping OFDM system is downloaded to the Spartan-3E hardware platform produced by Xilinx Company, and the test results are observed and analyzed through Chipscope on the computer. The simulation and test results show that the designed FH OFDM system can correctly realize the functions of 64QAM mapping and inverse mapping, OFDM modulation and demodulation, frequency hopping and de-hopping, low-pass filtering and symbol decision, and can correctly realize the transmission of FH-OFDM signals. Part of the realization of FH-OFDM signal reception, basically meet the frequency hopping OFDM system design requirements.
【學(xué)位授予單位】：大連海事大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TN914.41
本文編號(hào)：2393613
[Abstract]:Frequency hopping (OFDM (Orthogonal Frequency Division Multiplexing) is a new high speed communication system which combines frequency hopping technology with OFDM technology. It not only has the advantages of strong anti-interference ability of frequency-hopping technology, but also has the advantages of high spectrum efficiency and anti-multipath interference of OFDM technology. Frequency-hopping OFDM system supports high-speed data transmission, which is one of the development directions of mobile communication in the future. Based on the basic principles of frequency hopping system and OFDM system, this paper presents the design scheme of frequency hopping OFDM communication system based on the detailed study of each performance index of frequency hopping system and the key technology of OFDM system. The 64QAM mapping is used to complete the data mapping, the fast Fourier transform is used to complete the OFDM modulation and demodulation, the frequency hopper is designed by using DDS technology, and the source data is solved by low-pass filtering and symbol decision. Under the development environment of ISE 10.1 of Xilinx Company, this design uses Verilog hardware description language to program, uses Synplify Pro tool to synthesize, and obtains the corresponding design circuit diagram of register transfer level (Register-Transfer Layer,RTL). The function is simulated by Modelsim 6.5a simulation tool. Finally, the frequency-hopping OFDM system is downloaded to the Spartan-3E hardware platform produced by Xilinx Company, and the test results are observed and analyzed through Chipscope on the computer. The simulation and test results show that the designed FH OFDM system can correctly realize the functions of 64QAM mapping and inverse mapping, OFDM modulation and demodulation, frequency hopping and de-hopping, low-pass filtering and symbol decision, and can correctly realize the transmission of FH-OFDM signals. Part of the realization of FH-OFDM signal reception, basically meet the frequency hopping OFDM system design requirements.
【學(xué)位授予單位】：大連海事大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TN914.41
【參考文獻(xiàn)】
相關(guān)期刊論文 前1條
1 段永顥;孫宇明;趙鵬;;跳頻OFDM通信系統(tǒng)同步算法及實(shí)現(xiàn)[J];通信技術(shù);2012年06期
相關(guān)碩士學(xué)位論文 前1條
1 趙巖;跳頻通信系統(tǒng)抗干擾性能研究[D];哈爾濱工業(yè)大學(xué);2010年
，本文編號(hào)：2393613
本文鏈接：http://sikaile.net/kejilunwen/wltx/2393613.html
最近更新
教材專著
