432676 manbuweixiao 基于FPGA的振幅键控调制器与解调器的设计与实现

432676 manbuweixiao 基于FPGA的振幅键控调制器与解调器的 设计 领导形象设计圆作业设计ao工艺污水处理厂设计附属工程施工组织设计清扫机器人结构设计 与实现 ------------------------------------------------------------------------------------------------ 432676$manbuweixiao$基于FPGA的振幅键控调制器与解调 器的设计与实现 辽宁工业大学毕业设计 基于FPGA 的2ASK(振幅键控)调制与解调器的设计 [摘 要]: 1934年美国学者李佛西提出脉冲编码调制(PCM)的概念，从此之后通信数字化的时代应该说已经开始了，但是数字通信的高速发展却是20世纪70年代以后才开始的。随着时代的发展，用户不再满足于听到声音，而且还要看到图像;通信终端也不局限于单一的电话机，而且还有传真机和计算机等数据终端。现有的传输媒介电缆、微波中继和卫星通信等将更多地采用数字传输。在数字传输系统中，数字信号对高频载波进行调制，变成频带信号，在接收端进行解调，恢复原数字信号对载波的控制分为振幅调制即振幅键控(ASK)，频率调制即频率键控(FSK)和相位调制即相位键控(PSK)。现场可编程门阵列(FPGA)在通信领域得到了广泛的应用，利用FPGA性能优越、使用方便的特点，可以简化振幅调制解调 电路 模拟电路李宁答案12数字电路仿真实验电路与电子学第1章单片机复位电路图组合逻辑电路课后答案 的设计，而且易于反复编写和修改程序。文章介绍了 运用VHDL 语言进行基于FPGA 的振幅键控调制电路和解调电路设计的实现 方案 气瓶 现场处置方案 .pdf气瓶 现场处置方案 .doc见习基地管理方案.doc关于群访事件的化解方案建筑工地扬尘治理专项方案下载 , 给出了程序设计和仿真结果, 完成了二进制基带数字信号的调制和解调, 得到了相应的调制信号和解调信号。 [关键词]: FPGA 2ASK 调制解调 VHDL [Abstract]Communication digital era had began since American —————————————————————————————————————— ------------------------------------------------------------------------------------------------ researcher Reeves put forward the concept of pulse code modulation (PCM) in 1934 and gained a rapid development after the 1970s. With the economic development, sound can't meet the demand of consumers and they also want to see the images. What's more, communication terminal doesn't only include the single telephone set but also the data terminal such as electro-graph and computer. Current transmission medium such as cable, microwave repeater and satellite communication will prefer to use digital transmission. In digital transmission system, the digital signal are used to modulate the high frequency carrier wave to the frequency signal, which transfers through the channel, are renewed at the receiver. Three ways to modulate the carrier wave are as follows: Amplitude Shift Keying(ASK), Frequency-Shift Keying(FSK) and Phase Shift Keying(PSK).Field-Programmable Gate Array(FPGA) is applied universally in the communication field. With the superior performance and utilization convenience of FPGA, the design of circuit in the Amplitude modulation and demodulation can be simplified and it's easy for us to compile and modify the programme. This thesis introduces the main realization method of designing Amplitude Shift Keying modulation and demodulation circuit based on FPGA in VHDL ,illustrates the programme design and simulation result, implement the modulation and demodulation of binary baseband digital signal and finally finds out the corresponding modulation signal and —————————————————————————————————————— ------------------------------------------------------------------------------------------------ demodulation signal. [Key words] FPGA Amplitude shift keying Modem VHDL 摘要太罗嗦，抓住重点就行。英文一般为Times New Roman 格式 pdf格式笔记格式下载页码格式下载公文格式下载简报格式下载 目录 1、 前 言…………………………………………………………………?…...……4 1.1、课 题 快递公司问题件快递公司问题件货款处理关于圆的周长面积重点题型关于解方程组的题及答案关于南海问题 研究背 景…………………………………………………?……….…4 1.2、课题目的与意 义………………………………………………?……….…4 2、通信系统中数字调制解调技 术………………………………….....……………5 2.1、数字调制技 术……………………….………………… …………………5 2.2、调制方 式………………………….………………………………....………5 2.2.1、ASK幅移键 控…………….………………………………….......……6 2.2.2、FSK频移键 控……………………..……………………………....……6 —————————————————————————————————————— ------------------------------------------------------------------------------------------------ 2.2.3、PSK相移键 控……………..……………………………………....……7 2.2.4、QAM正交振幅调 制……………………………………………....…...…8 2.3、2ASK、2FSK、2PSK、2DPSK解调技术……………………… ——————————————————————————————————————