Optimum OVSF code reassignment in Wideband CDMA forward radio link

Cryptographic properties of some binary generalized cyclotomic sequences with the length p2☆

“…Pseudo-random sequences with certain unpredictable properties are widely used in code-division multipleaccess systems [14], radar systems [10], stream ciphers [13,15], etc. Balance, linear complexity, autocorrelation and distribution of patterns are main components that indicate the unpredictability of sequences.…”

The linear complexity of new generalized cyclotomic binary sequences of order four

“…Pseudo-random sequences with certain unpredictable properties are widely used in simulation, software testing, ranging systems, global positioning systems, code-division multiple-access systems, radar systems, spread-spectrum communication systems and especially in stream ciphers [14,16]. Linear complexity, L(s 1 ), is one of the important characteristics that indicates the unpredictability of the sequence, s 1 , and is the length of the shortest linear feedback shift register (LFSR) that can generate this sequence [9].…”

Trace representation of some generalized cyclotomic sequences of length pq

“…Pseudo-random sequences have broad applications in stream cipher, channel coding and spread spectrum communication [13]. The linear complexity, which is the minimal degree of a linear feedback shift register (LFSR) for generating the sequence [8,9], is a valuable measure for unpredictability [2].…”