Title :
Fuzzy binary sequences for secure spread-spectrum systems
Author :
El-Khamy, Said E. ; Ali, Adel Hamdi
Author_Institution :
Dept. of Electr. Eng., Alexandria Univ., Egypt
Abstract :
In this paper, we describe the generation of pseudo-random (PN) binary sequences using a technique based on fuzzy logic. The generated fuzzy binary sequences are shown to have good randomness properties and their length can be made extremely long. Such sequences are suitable for data encryption and for secure direct-sequence (DS) spread-spectrum (SS) systems. We also describe the generation of code families with good auto- and cross-correlation properties, which make them suitable for secure code-division multiple-access (CDMA) systems. Although the generated codes appear to be random and enjoy most of the properties of random codes, they are deterministic. In other words, they can be exactly regenerated by fixing the parameters of the fuzzy random number generator
Keywords :
binary sequences; code division multiple access; correlation theory; cryptography; fuzzy logic; pseudonoise codes; random number generation; spread spectrum communication; telecommunication security; CDMA systems; auto-correlation properties; code families; cross-correlation properties; data encryption; deterministic codes; fuzzy binary sequences; fuzzy logic; fuzzy random number generator; length; pseudo-random binary sequences; randomness properties; secure code-division multiple-access; secure direct-sequence spread-spectrum systems; secure spread-spectrum systems; Binary sequences; Frequency; Fuzzy systems; Logic; Multiaccess communication; Production systems; Random number generation; Spread spectrum communication; Testing; Training data;
Conference_Titel :
Radio Science Conference, 2000. 17th NRSC '2000. Seventeenth National
Conference_Location :
Minufiya
Print_ISBN :
977-5031-64-8
DOI :
10.1109/NRSC.2000.838938
