Analysis of improved piecewise linear chaotic sequences as spreading codes for DS-CDMA system
被引:0
作者:
Rao, Ni-Ni
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机构:
Inst. of Life Sci. and Technol., Univ. of Electron. Sci. and Technol., Chengdu 610054, ChinaInst. of Life Sci. and Technol., Univ. of Electron. Sci. and Technol., Chengdu 610054, China
Rao, Ni-Ni
[1
]
机构:
[1] Inst. of Life Sci. and Technol., Univ. of Electron. Sci. and Technol., Chengdu 610054, China
Calculations - Codes (symbols) - Computer simulation - Direct sequence systems - Functions - Spread spectrum communication - Theorem proving;
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摘要:
The improved piecewise linear chaotic mapping is presented to generate the spreading codes for DS-CDMA system. The spreading properties and the effects of two quantification functions on the spreading properties are analyzed. The simulation results show that the sequences have long period, good balance, δ-like auto-correlation and very small cross-correlation and great linear complexity under the condition of the proper initial values and are suitable to be used as the spreading codes for DS-CDMA.