基于fpga的ofdm调制器的仿真设计本科毕设论文

武汉工程大学邮电与信息工程学院毕业设计(论文)

Key Words: Orthogonal Frequency Division Multiplexing (OFDM); Field Programmable Gate Array (FPGA) ; simulation

武汉工程大学邮电与信息工程学院毕业设计(论文)

目 录

第1章 绪论...................................................................................................................1

1.1 OFDM的研究背景............................................................................................1 1.2 OFDM的研究目的和意义................................................................................1 第2章OFDM技术基础...............................................................................................2

2.1 OFDM的基本原理............................................................................................2 2.2 OFDM技术的实现............................................................................................4 2.3 OFDM系统的关键技术....................................................................................5 2.3.1 同步技术....................................................................................................5 2.3.2 信道估计....................................................................................................6 2.3.3 降低峰值平均功率比................................................................................6 2.3.4 均衡............................................................................................................6 2.3.5 编码信道和交织........................................................................................7

第3章OFDM调制器技术.........................................................................................9

3.1 OFDM调制解调原理........................................................................................9 3.2 采用 IFFT 和 FFT 的 OFDM 系统结构...................................................11 第4章OFDM调制器的MTALAB仿真.................................................................14

4.1 IFFT模块.........................................................................................................15 4.2 添加循环前缀.................................................................................................15 4.3 加窗模块.........................................................................................................16 4.4 前导模块.........................................................................................................16 4.5 成帧模块.........................................................................................................17 第5章 OFDM调制器的VERILOG仿真..............................................................18

5.1 OFDM调制器的结构设计.............................................................................18 5.2 子模块仿真分析.............................................................................................18 5.2.1.BPSK/DBPSK映射...................................................................................18 5.2.2 IFFT前数据处理 .....................................................................................20

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武汉工程大学邮电与信息工程学院毕业设计(论文)

5.2.3 IFFT模块..................................................................................................20 5.2.4添加循环前缀和加窗................................................................................21 5.2.5 前导生成模块..........................................................................................22 5.2.6 成帧模块..................................................................................................23 5.3 仿真结果的对比验证.....................................................................................24 第6章 总结与展望 ...................................................................................................... 29 参考文献 ........................................................................................................................ 28 致谢 ................................................................................................................................ 29 附录 主要英文缩写语对照表 .................................................................................... 30

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