| 软件无线电的数字中频技术在WCDMA基站中的应用 |
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| 引用本文： | 唐睿,陈霞,谈振辉.软件无线电的数字中频技术在WCDMA基站中的应用[J].北京交通大学学报(自然科学版),2005,29(5):27-30. |
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| 作者姓名： | 唐睿 陈霞 谈振辉 |
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| 作者单位： | 北京交通大学,电子信息工程学院,北京,100044;北京交通大学,电子信息工程学院,北京,100044;北京交通大学,电子信息工程学院,北京,100044 |
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| 摘 要： | 随着高性能数字信号处理器(DSP)和现场可编程门阵列(FPGA)的出现,基于软件无线电(SDR)的数字中频技术目前被广泛地应用到3G基站中.本文在分析了数字中频模块原理及结构的基础上,对WCDMA基站中的数字上变频器(DUC)进行了优化设计,提出了一种三级实现方案.仿真结果表明,对比单级实现方案,该方案带来了4 dB的系统性能改善,同时对DSP运算速度的要求是单级方案的1/10,适合硬件实现.
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| 关 键 词： | 3G通信 数字中频 数字上变频器 软件无线电 |
| 文章编号： | 1673-0291(2005)05-0027-04 |
| 收稿时间： | 2005-06-02 |
| 修稿时间： | 2005年6月2日 |
Application of SDR-Based Digital IF Technology in WCDMA Basestations |
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| TANG Rui,CHEN Xia,TAN Zhen-hui.Application of SDR-Based Digital IF Technology in WCDMA Basestations[J].JOURNAL OF BEIJING JIAOTONG UNIVERSITY,2005,29(5):27-30. |
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| Authors: | TANG Rui CHEN Xia TAN Zhen-hui |
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| Institution: | School of Electronics and Information Engineering, Beijing Jiaotong University, Beijing 100044, China |
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| Abstract: | As the emerging of high performance digital signal processing devices such as digital signal processor(DSP) and field programmable gate array(FPGA), the software defined radio(SDR) based Digital IF technology has been widely used in 3G basestations recently.Based on the analysis of the principle and structure of Digital IF module,this paper carries out the optimum design of the digital up converter(DUC) for WCDMA basestations,and presents a three-stage scheme.Simulation results indicate that,the three-stage scheme has a 4 dB system performance improvement compared with the single stage scheme.Furthermore,the three-stage scheme lowers the requirements for the DSP operation speed more than ten times,which is suitable for hardware implementation. |
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| Keywords: | 3G communications digital IF digital up converter(DUC) software defined radio(SDR) |
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