The research on a new CDMA scheme

摘要

In this paper,an effective method of M-ary Spread Specturm has bene suggested to realize the high speed SS in the limited bandwidth.For further improving system performance,each user is identified by the Gold codes and orthogonal waveforms function.The theoritical analysis and the computer siulation results show that the cross-correlatin of these codes are less than that of the classic Gold sequence [3].By using the techniques above,15dB processing gain can be achieved When the system synchronized,another 3dB of SNR also cna be attained.