| 直接序列扩频接收机同步技术研究 |
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| 引用本文： | 刘丽,何加铭,陈志君,祝炎明.直接序列扩频接收机同步技术研究[J].宁波大学学报(理工版),2006,19(2):161-165. |
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| 作者姓名： | 刘丽 何加铭 陈志君 祝炎明 |
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| 作者单位： | 宁波大学,通信技术研究所,浙江,宁波,315211;宁波市通信芯片与射频技术重点实验室,浙江,宁波,315040;宁波大学,通信技术研究所,浙江,宁波,315211 |
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| 基金项目： | 国家高技术研究发展计划(863计划) |
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| 摘 要： | 同步的实现是直扩系统中一个关键问题,目前对PN码同步的研究主要集中在如何实现快速捕获的问题.以前主要采用串行捕获方法,这种方法实现简单,但捕获速度不能满足要求,而现在大规模集成电路的应用使并行捕获方法成为可能,捕获速度快,但系统的复杂度很高.基于此,本文提出一种混合捕获方法,可实现PN码捕获的时间性能与系统复杂度的折衷.最后通过MAX＋Plus仿真和FPGA硬件平台测试,验证了方案的可行性.
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| 关 键 词： | 同步 混合捕获 直接序列扩频 PN码 FPGA |
| 文章编号： | 1001-5132(2006)02-0161-05 |
| 收稿时间： | 2005-09-15 |
| 修稿时间： | 2005年9月15日 |
Study on Synchronization for the Receiver of Direct-sequence Spread Spectrum |
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| LIU Li,HE Jia-ming,CHEN Zhi-jun,ZHU Yan-ming.Study on Synchronization for the Receiver of Direct-sequence Spread Spectrum[J].Journal of Ningbo University(Natural Science and Engineering Edition),2006,19(2):161-165. |
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| Authors: | LIU Li HE Jia-ming CHEN Zhi-jun ZHU Yan-ming |
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| Abstract: | The synchronization is one of the critical issues concerning the direct-sequence spread spectrum system.The technical efforts in current research for code synchronization are mainly focused on the implemen-tation of quick acquisition.The conventional approaches regarding this respect are characterized in serial acqui-sition that is found to be simple for implementation,but cannot meet the real-time requirement set for the acqui-sition rate.The application of large-scale integrated circuit,on the other hand,makes the parallel acquisition possible.The parallel acquisition features quick acquisition rate but lacks the system simplicity.The paper proposes a combined acquisition method that functions as an optimal trade-off between acquisition rate and system complexity.The MAX+Plus emulation and testing of FPGA hardware platform prove the feasibility of the proposed approach. |
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| Keywords: | FPGA |
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