SNR analysis for orthogonal chaotic spreading sequences

We obtain an analytical formula of SNR with orthogonal chaotic spreading se quence for synchronous CDMA(code division multiple access) communication sy stems based on ergodic theory. We construct arbitrary dimensional chaotic s preading sequences as complete product bases in the corresponding Hilbert s pace. It is shown that mean SNR (signal to interference noise ratio) of syn chronous CDMA systems with product-bases sequences does not depend on the d imensionality of the corresponding chaotic dynamics and equals the mean SNR of synchronous CDMA systems with one-dimensional sequences given in [8].