Title:
【発明の名称】CDMAシステムにおける干渉抑制
Document Type and Number:
Japanese Patent JPH08510606
Kind Code:
A
Abstract:
Circuitry and concomitant methodology for demodulating Direct-Sequence, Spread-Spectrum Code-Division Multiple-Access (DS/SS CDMA) channel signal using multiple samples per transmitted symbol and a minimum mean squared error criterion to suppress interference. In one embodiment, a bank of cyclically shifted filters determined with reference to the conventional matched filter for CDMA is used to demodulate the channel signal. In another embodiment, a bank of sub-filters determined with reference to the conventional matched filter for CDMA is employed to demodulate the channel signal. In yet another embodiment, the output of a conventional matched filter is oversampled to demodulate the channel signal. Each embodiment utilizes a set of adaptive coefficients selected to minimize the mean square error between the transmitted symbol and detected symbol.
Inventors:
Honig, Michael, Rutherm
Madhau, Apamanyu
Madhau, Apamanyu
Application Number:
JP50983995A
Publication Date:
November 05, 1996
Filing Date:
September 15, 1994
Export Citation:
Assignee:
Bell Communications Research, Inc.
International Classes:
H03H21/00; H03H17/00; H04B1/12; H04B1/7103; H04B3/06; H04B7/005; (IPC1-7): H04J13/04; H04B7/005; H04B3/06
Attorney, Agent or Firm:
Yoshikazu Tani (1 person outside)