[1]朱秋明,曹臻,徐大专,等.级联高增益直接序列扩谱系统的FPGA设计[J].南京师范大学学报(工程技术版),2007,07(02):053-57.
　Zhu Qiuming,Cao Zhen,Xu Dazhuan.High-Gain DSSS Cascaded System Design Based on FPGA[J].Journal of Nanjing Normal University(Engineering and Technology),2007,07(02):053-57.
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级联高增益直接序列扩谱系统的FPGA设计
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南京师范大学学报（工程技术版）[ISSN:1006-6977/CN:61-1281/TN]

卷:
07卷
期数:
2007年02期
页码:
053-57
栏目:
出版日期:
2007-06-30

文章信息/Info

Title:
High-Gain DSSS Cascaded System Design Based on FPGA
作者:
朱秋明;曹臻;徐大专;
南京航空航天大学信息科学与技术学院, 江苏南京210016
Author(s):
Zhu Qiuming; Cao Zhen; Xu Dazhuan
College of Information Science and Techonology,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China
关键词:
直接序列扩频;  FPGA;  级联;  高增益
Keywords:
DSSS;  FPGA;  ascade;  high-ga in
分类号:
TN791
摘要:
针对直接序列扩谱系统随着扩谱码长增加,对硬件资源和系统运算速度的要求呈指数增长的问题,提出了基于FPGA的级联方案实现高处理增益直扩系统.该方案利用两个或多个短伪码序列代替传统的单个长伪码序列进行直扩系统的调制和解调,相对于传统直扩方案可以大大节省硬件资源和缩短延迟时间.分析和仿真结果表明,只需进行合理的分级,该级联方案性能接近于相同增益的传统单级直扩系统但可以大幅度节省系统开销.最后利用两级级联方案实现码长为1024的直接序列扩谱系统,并进行了FPGA验证.
Abstract:
A longw ith the length o f PN( PeseudoNo ise) code in trad itional DSSS ( Direct Sequence Spread Spectrum) system increasing , the system w ill need much m ore hardware resources and much faster com puting capability. A new cascaded a rchitec ture based on FPGA is introduced to rea lize h igh- ga in DSSS system . To reduce hardw are resources and improve processing speed, this design used tw o orm ore sho rt PN code instead o f one traditiona l long PN code to realizem odu lation and dem odu lation. Resu lts o f analysis and simu la tion showed if w e choose short PN codes reasonab ly , th is cascaded system s’ perform ance is c lose to the trad itiona l sing le system. Bu t it ism uch better in hardw are resource consum ption and search ing tim e. In the end, a DSSS system w as finished in FPGA to va lida te th is cascaded design.

参考文献/References:

[ 1] Unaw ong Sakda. Proposa l o f adaptiv emu lticode transm ission for DS- SS system under ISM inter fe rence env ironm en ts[ C] / / Asia- Pac ificM icrow av e Con ference Proceedings, 1999, 1: 186- 189.
[ 2] Deholla in Ca ther ine, M ichel Declercq. A g lobal survey on short range low power w ireless data transm ission arch itectures for ISM applications[ C] / / Proceedings o f the Internationa l Sem iconduc to r Con ference, 2001, 1: 117- 126.
[ 3] FuenteM P. D irect sequence spread spectrum rad io LANs[ J]. IEEE Co lloqu ium ( Digest), 1995, 71( 4): 41- 46.
[ 4] Berner S, DeLeon P. Paralle l d ig ita l arch itectures for h igh-speed adap tiveDSSS rece ivers[ C] / / Conference Reco rd o f the As-i lom ar Conference on S ignals, System s and Com pute rs, 2000, 2: 1 298.
[ 5] Rno ld Jon. A recon figurable 100M ch ip / s spread spectrum rece ive r[ C] / / IEEE Inte rnational Con ference on Acoustics, Speech and S ignal Processing, 2003, 2: 445- 448.
[ 6] 龚国辉, 李思昆. 直序扩频信号PN码相位的自适应测量算法[ J]. 电子学报, 2006, 34( 7): 1 325- 1 328.
Gong Guohu,i Li Sikun. Adaptive a lgor ithm fo r PN code phase m easuring of DS /SS s igna ls[ J]. ACTA E lectron ica Sinica, 2006, 34( 7): 1 325- 1 328. ( in Ch inese)
[ 7] Po lycloros A, W eber C L. A unified approach to serial search spread-spectrum code acqu isition-partÑ & Ò [ J]. IEEE T rans Commun, 1984, 32( 5): 542- 560.
[ 8] Oppenhe im A V, Schafer R W, Buch J R. Discre te-T im e S igna l Processing [M ]. Eng lewood C liffs, New Jersey: Prentice- H a l,l 1999.
[ 9] W inM Z, Scho ltz R A. U lha-w ide bandw idth tim e-hopping spread-spectrum im pu lse rad io fo rw ire lessm ultipleaccess commun ica tion[ J]. IEEE Tran Comm un, 2000, 48( 1): 679- 690.

相似文献/References:

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备注/Memo

备注/Memo:
基金项目: 江苏省国际合作基金( BZ2001036)资助项目.
作者简介: 朱秋明( 1979-) , 博士研究生, 主要从事数字通信、无线局域网等方面的教学与研究. E-m ail:zhuq ium ing@ nuaa. edu. cn
更新日期/Last Update: 2013-04-29