  A Chaotic Pseudo Orthogonal Carriers Multi-Access (CPOCMA) communication
based on Chaotic Pseudo Orthogonal Shape-forming Filter (CPOSF) bank, Chaotic
Pseudo Orthogonal Matched Filter (CPOMF) bank and Chaotic Pseudo Orthogonal
Correlation Filter (CPOCF) bank is proposed in this work. At the transmitter,
the multiple CPOSFs are used to generate pseudo orthogonal signals. It provides
a good trade-off between spectrum efficiency and high bit transmission rate. At
the receiver, the CPOMF bank and CPOCF bank are used to maximize the
Signal-to-Noise Ratio (SNR) and extract the received information from each
sub-channel, respectively. The received signal is demodulated by averaging the
sampled sequence from the matched filter bank output and sorting the sampling
sequence from the CPOCF bank output to recover the transmitted information
bits. The proposed CPOCMA communication system not only offers multiuser access
with high reliability and high data transmission rate, but also achieves higher
spectrum efficiency. Analytical Bit Error Rate (BER) expression is derived. The
proposed communication system performance has been evaluated in Additive White
Gaussian Noise (AWGN) channel and wireless channel by both numerical
simulations and experiments based on a Wireless open-Access Research Platform
(WARP), the results show the effectiveness and the superiority of the proposed
method.
