Being combined large area synchronization (LAS) spread-spectrum (SS) code division multiple access (CDMA) technology with the space-time coding technology, space-time LAS spread-spectrum CDMA system, with more than one antennas installed in the transmitter and receiver, can get more advantages, for example spatial diversity. The space-time LAS spread-spectrum CDMA system model, including both the transmitter and the receiver is put forward. This kind of system are able to achieve not only the temporal diversity but also the spatial diversity over wireless fading channel, which is conducive to enhance the system performance. The decoding method, as well as some simulational performance results, is given.
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