[1] Shen Fei, Song Tiecheng, Ye Zhihui, Liu Tong, et al. Novel method of enhancing the key amount for FH systems [J]. Journal of Southeast University (English Edition), 2004, 20 (4): 412-417. [doi:10.3969/j.issn.1003-7985.2004.04.004]
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Novel method of enhancing the key amount for FH systems(
)
一种提高跳频系统密钥量的新方法
)Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]
- Volumn:
- 20
- Issue:
- 2004 4
- Page:
- 412-417
- Research Field:
- Information and Communication Engineering
- Publishing date:
- 2004-12-30
Info
- Title:
- Novel method of enhancing the key amount for FH systems
- 一种提高跳频系统密钥量的新方法
- Author(s):
- Shen Fei; Song Tiecheng; Ye Zhihui; Liu Tong; Xia Weiwei
- National Mobile Communications Research Laboratory, Southeast University, Nanjing 210096, China
- Keywords:
- frequency-hopping system; key amount; security of information; unequal-interval carriers; frequency-shift filter
- PACS:
- TN914;TN925
- DOI:
- 10.3969/j.issn.1003-7985.2004.04.004
- Abstract:
- Based on the principle of information theory, a novel scheme of unequal-interval frequency-hopping(FH)systems is proposed. For cases of spectrum overlapping systems and non-overlapping systems, the implementation methods are presented and the security performances are discussed theoretically. Firstly, the definitions of absolute and relative key amounts of FH systems, equal-interval and unequal-interval FH systems are given. Then, the absolute key amount and relative key amount are analyzed for equal-interval and unequal-interval FH systems. The results indicate that the absolute key amount has become the key point in improving the security and secrecy of FH systems, especially in today’s epoch of highly developed computer science and IC design technology. Theoretical analysis and practical examples show that the absolute key amount of unequal-interval FH systems is generally over two orders larger than that of equal-interval ones when spectrum overlapping is allowable. Therefore, there is great superiority in enhancing the security and secrecy for the scheme mentioned.
- 基于信息论原理, 提出了一种非等间隔跳频系统的方案, 针对不允许频谱重叠系统和允许频谱重叠系统, 分别给出了实现方法并对其安全性能进行了理论分析. 首先给出了跳频系统的绝对密钥量和相对密钥量、等间隔和非等间隔跳频系统等定义; 然后分析了等间隔和非等间隔跳频系统的绝对密钥量和相对密钥量, 从而看出在计算机技术和集成电路设计技术得到飞速发展的情况下, 跳频系统的绝对密钥量已变成制约其保密性和安全性的关键; 理论分析和实例计算可以看出, 采用非等间隔跳频后其绝对密钥量有大幅度提高, 特别是允许频谱重叠的系统, 比等间隔跳频系统提高了2个数量级以上.
References:
[1] Bluetooth SIG. Bluetooth Technology Standard V1. 1 [EB/OL].http: //www.bluetooth.com. 1999-12-10/2004-09-20.
[2] LAN/WAN Standards Committee of the IEEE Computer Society. IEEE 802. 11 wireless LAN medium access control and physical layer specifications [EB/OL]. http: //www.ieee.org. 1999-12-25/2004-09-20.
[3] Ye Zhihui, Shen Lianfeng, Song Tiecheng. Interference analysis and improvement of capacity reduction for FHSS networks in WPAN application environment [J]. Journal of Southeast University(English Edition), 2003, 19(3): 205-211.
[4] Fainberg M, Goodman D. Analysis of the interference between IEEE 802. 11b and Bluetooth systems [A]. In: IEEE VTS 54th[C]. New Jersey, 2002, 2: 967-971.
[5] Andrew S, Park R, Buehrer M. Throughput performance of an FHMA system with variable rate coding [J]. IEEE Transaction on Communications, 1998, 46(4): 521-532.
[6] Stranne A, Floren R, Edfors O, et al. FHSS networks in the presence of strongly interfering Bluetooth networks [A]. In: Proceeding of the 13th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications[C]. Lisbon, Portugal, 2002, 1: 161-165.
[7] Sklar Bernard. Digital communications fundamentals and applications. 2nd ed. [M]. New Jersey: Prentice Hall PTR, 2001. 890-940.
[8] Cover Thomas M, Thomas Joy A. Elements of information theory [M]. New York: Wiley, 1991.
[9] Zhang J, Wong K M, Luo Z Q, et al. Blind adaptive FRESH filtering for signal extraction [J]. IEEE Transaction on Signal Processing, 1999, 47(5): 1397-1402.
Memo
- Memo:
- Biographies: Shen Fei(1983—), female, undergraduate; Song Tiecheng(corresponding author), male, professor, songtc@seu.edu.cn.