Space-time codes of multi-code transmission for WCDMA
Ming Chen, Gang Wu, Haifeng Wang · 2002
In this paper, the space-time codes are designed for wide band CMDA (WCDAM) systems with multi-code transmission as the channel codes to improve the reliability of communications over additive white Gaussian noise (AWGN) channels. In multi-code CDMA, several spreading codes are assigned to a user for transmitting its data in order to improve the data rate. Thus a multi-input and multi-output (MIMO) structure is formed. The space-time coding criterion is deduced and examples of space-time codes are provided and applied in the simulations.