Title :
Optimal spreading in multi-user non-coherent binary chaos-shift-keying communication systems
Author :
Yao, Ji ; Lawrance, Anthony J.
Author_Institution :
Sch. of Math., Univ. of Birmingham, UK
Abstract :
Optimal spreading for multi-user non-coherent binary chaos-shift-keying (CSK) communication systems with correlation demodulating is considered in this paper. The bit error rate (BER) of the system is calculated by a dynamical-improved Gaussian approximate (DIGA) approach. The lower bound of the BER performance is deduced and the optimal spreading factor is calculated from this BER bound; it is validated by simulation experiments. The main contribution of the paper is to show that the optimal spreading factor in the non-coherent differential CSK (DCSK) is approximately linear with the signal-to-noise ratio (SNR) and the square root of the number of users.
Keywords :
AWGN channels; chaotic communication; demodulation; error statistics; multiuser channels; optimisation; AWGN channel; BER lower bound; DCSK; DIGA; SNR; chaos-shift-keying communication; correlation demodulating; differential CSK; dynamical-improved Gaussian approximation method; multiuser noncoherent binary CSK; spreading factor optimisation; AWGN; Analytical models; Bit error rate; Chaotic communication; Communication systems; Gaussian approximation; Linear approximation; Mathematics; Signal to noise ratio; Statistics;
Conference_Titel :
Circuits and Systems, 2005. ISCAS 2005. IEEE International Symposium on
Print_ISBN :
0-7803-8834-8
DOI :
10.1109/ISCAS.2005.1464728
