Invention Grant
US07002945B2 FDM-CDMA transmitting method, FDM-CDMA receiving method, FDM-CDMA transmitting device and FDM-CDMA receiving device 失效
FDM-CDMA发送方法,FDM-CDMA接收方法,FDM-CDMA发送装置和FDM-CDMA接收装置

FDM-CDMA transmitting method, FDM-CDMA receiving method, FDM-CDMA transmitting device and FDM-CDMA receiving device
Abstract:
A spreading code setting circuit generates N vectors, as spreading codes, which are +1 or −1 polarity and are unique to users. A multiplier multiplies the nth data and the nth spreading code corresponding thereto for the spread modulation. An FDM combining circuit modulates N pieces of data according to the FDM method. A FDM separating circuit demodulates received signals according to the FDM method. An inverse spreading code setting circuit generates N vectors, as inverse spreading codes, which are +1 or −1 polarity and are unique to users at the transmission side. A multiplier multiplies the nth data and the nth inverse spreading code corresponding thereto for inverse spread modulation.
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