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专利名称：Sigma-delta modulation code division
multiple-access receiver
发明人：Kaibin Huang,Kwee Tong Heng,Po Shin
Francois Chin
申请号：US104738申请日：20040607
公开号：US20040213333A1公开日：20041028
专利附图：
摘要：A code division multiple-access receiver comprises an analog-to-digital
converter for digitising a demodulated spread signal. The analog-to-digital converter is a
Sigma-Delta modulator. The receiver also comprises a despreader comprising simplelogic gates and an integrator, performing the function of despreading the digitiseddemodulated spread signal into a digitised baseband signal. The despreader doubles as aSigma-Delta demodulator and hence eliminates a separate stage of Sigma-Deltademodulation.
申请人：HUANG KAIBIN,HENG KWEE TONG,FRANCOIS CHIN PO SHIN
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