Implementation of DSSS System using Chaotic Sequence using MATLAB and VHDL
نویسنده
چکیده
In spread spectrum systems, pseudo-random (PN) sequences are used to spread the data bits. There are various type of PN sequences are available with good correlation properties, most of which are generated by Linear Feedback Shift Register (LFSR). In this paper we describe the generation pseudo chaotic sequences (PCS) and conventional PN sequences and its correlation properties. Here, pseudo-chaotic sequences are generated with different initial values and its autocorrelation, cross correlation properties evaluated. The BER performance of PCS sequence is compared with the conventional PN sequences. DSSS system is implemented both in MATLAB and VHDL language. Keywords— ―Chaos‖, ―Chaotic system‖, ―Spread spectrum‖, ―Correlation‖, ―BER‖
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