高码率扩频系统的快速捕获算法研究

doi:10.16182/j.issn1004731x.joss.19-0109

系统仿真学报 ›› 2019, Vol. 31 ›› Issue (8): 1727-1732.doi: 10.16182/j.issn1004731x.joss.19-0109

• 短文 • 上一篇

高码率扩频系统的快速捕获算法研究

王爱珍¹, 栾美松², 胡姣², 田竹梅¹, 任国凤¹

1. 忻州师范学院,山西忻州 034000;
2. 北京理工大学,北京 100081

收稿日期:2019-03-15 修回日期:2019-04-10 发布日期:2019-12-12
作者简介:王爱珍(1976-),女,山西忻州,硕士,副教授,研究方向为通信信号处理。
基金资助:
山西省高等教育教学改革创新项目(J2018162),忻州师范学院科研项目(2018KY15)

Research on Fast Acquisition Algorithm for High Bit Rate Spread Spectrum System

Wang Aizhen¹, Luan Meisong², Hu Jiao², Tian Zhumei¹, Ren Guofeng¹

1. Xinzhou Teachers University, Xinzhou 034000, China;
2. Beijing Institute of Technology, Beijing 100081, China

Received:2019-03-15 Revised:2019-04-10 Published:2019-12-12

摘要/Abstract

摘要： 在高码率扩频信通中,受硬件处理速度的制约,传统的捕获方法无法完成对PN码的快速捕获。为了解决处理速度不足的问题,高码率通信接收机通常采用并行处理方式。本文分析比较了几种传统的捕获方式,提出了一种适合大频偏条件下,基于PMF-FFT的并行快速捕获算法。该算法以并行匹配滤波和并行FFT为核心,可以同时完成多个码相位和频偏的捕获。文中对算法的原理进行了推导,通过MATLAB仿真了算法的捕获峰值、捕获概率,仿真结果表明,该算法可以在并行结构下,完成对伪码相位和多普勒频频偏的快速捕获。

关键词: 高码率, 扩频通信, 快速捕获, 并行结构

Abstract: In a high-bit-rate spread spectrum communication system, due to the limitation of hardware processing speed, traditional acquisition methods cannot accomplish quick capture of PN code. In order to solve this problem, parallel structure is usually used in high-bit-rate receivers. In this paper, several traditional acquisition methods are analyzed and compared, and a parallel fast acquisition algorithm based on PMF-FFT for large frequency offset is proposed. This algorithm is based on parallel matched filtering and parallel FFT, and can accomplish the capture of multiple code phases and frequency offsets simultaneously. The principle of the algorithm is deduced in this paper, including formula derivation, implementation structure and simulation verification by MATLAB. The results show that this algorithm can achieve fast acquisition of PN-code phase and doppler frequency offset in parallel structure.

Key words: high bit rate, spread spectrum communication, fast acquisition, parallel structure

中图分类号:

TN914.3

王爱珍, 栾美松, 胡姣, 田竹梅, 任国凤. 高码率扩频系统的快速捕获算法研究[J]. 系统仿真学报, 2019, 31(8): 1727-1732.

Wang Aizhen, Luan Meisong, Hu Jiao, Tian Zhumei, Ren Guofeng. Research on Fast Acquisition Algorithm for High Bit Rate Spread Spectrum System[J]. Journal of System Simulation, 2019, 31(8): 1727-1732.

参考文献

[1] Su Y T.Rapid Code Acquisition Algorithms Employing PN Matched Filers[J]. IEEE Trans on Communication (S0090-6778), 1988, 36(6): 724-733.
[2] 周三文, 黄龙, 卢满宏. FFT在高动态扩频信号捕获中的应用[J]. 飞行器测控学报, 2005, 24(2): 61.
Zhou Sanwen, Huang Long, Lu Manhong.Acquisition of High Dynamic Spread Spectrum Signals with FFT[J]. Journal of Spacecraft TT& C Technology, 2005, 24(2): 61.
[3] Spangenderg S M, Scoot I, Cruickshank D, et al.An FFT-Based Approach for Fast Acquisition in Spread Spectrum Communication Systems[J]. Wireless Personal Communication (S0929-6212), 2000, 26(13): 27-56.
[4] 黄翔东, 王越冬, 靳旭康, 等. 无窗全相位FFT/FFT相位差频移补偿频率估计器[J]. 电子与信息学报, 2016, 38(5): 1135-1142.
Huang Xiangdong, Wang Yuedong, Jin Xukang, et al.No-windowed ap FFT/FFT Phase Difference Frequency Estimator Based on Frequency-shift & Compensation[J]. Journal of Electronics & Information Technology, 2016, 38(5): 1135-1142.
[5] 杨秦彪, 王祖林, 黄勤, 等. 高动态链路中折叠PMF-FFT快速捕获方法[J]. 系统工程与电子技术, 2016, 38(8): 1723-1729.
Yang Qinbiao, Wang Zulin, Huang Qin, et al.Fast Overlapped PMF-FFT Acquisition Method in High Dynamic Link[J]. Systems Engineering and Electronic Technology, 2016, 38(8): 1723-1729.
[6] 袁葱林, 唐小妹, 韩春阳, 等. PMF-FFT方法在P码捕获中的改进及参数设计[J]. 全球定位系统, 2018, 43(4): 29-35.
Yuan Conglin, Tang Xiaomei, Han Chunyang, et al.Parameter Design of an Improved PMF-FFT Algorithm in P-code Acquisition[J]. GNSS World of China, 2018, 43(4): 29-35.
[7] 王云静, 张晓林, 郑昆. 一种基于全相位预处理的PMF-FFT改进算法[J]. 遥测遥控, 2018, 39(3): 16-20.
Wang Yunjing, Zhang Xiaolin, Zheng Kun.An Improved PMF-FFT Algorithm Based on All Phase Preprocessing[J]. Journal of Telemetry, Tracking and Command, 2018, 39(3): 16-20.
[8] 黄明军, 王永民, 牛家红. 基于内插法的 PMF-FFT 系统多普勒频偏精度研究[J]. 应用科技, 2016, 43(4): 46-49, 56.
Huang Mingjun, Wang Yongmin, Niu Jiahong.Research on the Doppler-shift Estimation Accuracy of PMF-FFT System Based on Interpolation Method[J]. Applied Science and Technology, 2016, 43(4): 46-49, 56.
[9] 王英喆, 杜蓉. 基于流水线结构并行FFT的设计与实现[J]. 电子工程设计, 2015, 23(4): 47-50.
Wang Yingzhe, Du Rong.A pipelining architecture design of parallel FFT based on FPGA[J]. Electronic Design Engineering, 2015, 23(4): 47-50.

高码率扩频系统的快速捕获算法研究

Research on Fast Acquisition Algorithm for High Bit Rate Spread Spectrum System

PDF (PC)

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 0

编辑推荐

Metrics

本文评价