| 数字接收机的硬件实现 |
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| 引用本文： | 刘峰,杨翠娥,司锡才,邵宇,张恒.数字接收机的硬件实现[J].佳木斯大学学报,2007,25(1):78-81,84. |
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| 作者姓名： | 刘峰 杨翠娥 司锡才 邵宇 张恒 |
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| 作者单位： | 哈尔滨工程大学信通学院,黑龙江哈尔滨150001 |
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| 摘 要： | 本文主要讨论一种基于软件无线电技术的中频多通道数字接收机的实现.在系统具体实现中,依据Nyquist欠采样理论,采用带通信号采样.将较高的中频变到较低的中频,它克服了传统接收机使用两个乘法器产生同相和正交信号所带来的两路特性不一致的问题.对经过采样信号的后期处理全部交给FPGA,用软件来实现.结果表明,系统具有成本低、精度高、结构简单等优良性能,可以满足实际需要.
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| 关 键 词： | 软件无线电 中频 数字接收机 硬件 数字接收机 硬件实现 Digital Receiver Realization 优良性能 结构简单 精度 成本 结果 软件 FPGA 后期处理 采样信号 问题 特性 正交信号 乘法器 使用 频变 带通信号采样 |
| 文章编号： | 1008-1402（2007）01-0078-04 |
| 收稿时间： | 2006-10-16 |
| 修稿时间： | 2006-10-16 |
Hardware Realization of a Digital Receiver |
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| LIU Feng,YANG Cui-e,SI Xi-cai,SHAO Yu,ZHANG Heng.Hardware Realization of a Digital Receiver[J].Journal of Jiamusi University(Natural Science Edition),2007,25(1):78-81,84. |
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| Authors: | LIU Feng YANG Cui-e SI Xi-cai SHAO Yu ZHANG Heng |
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| Institution: | School of Information and Communication Engineering,Harbin Engineering, University, Harbin 150001, China |
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| Abstract: | The software radio made noticeable progress in recent years since putting forward for the first time by Jeo Mitola 1992. This article discussed the realization of the multicharmel digital receiver Based on Software Radio. Concrete while realizing in the system, Nyquist Band - pass Sampling was adopt. Higher intermediate frequency will become lower intemediate frequency, it has overcome the inconsistencies in phase produced by two multiplications used by traditional digital receiver. Signals sampled were given to FPGA on later stage where all dispoistions will be realized with the software. The result shows, the system has free performance such as lower costs , higher precision simple structure, can meet the actual demands. |
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| Keywords: | software radio intermediate frequency digital receiver hardware |
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