Pulse or digital communications – Spread spectrum – Direct sequence
Patent
1990-10-12
1993-01-19
Kuntz, Curtis
Pulse or digital communications
Spread spectrum
Direct sequence
375 14, 375101, 36472401, 455307, H04B 110
Patent
active
051812282
ABSTRACT:
A phase equalizer in the receiver portion of a bi-directional communication system is disclosed equalizer for reducing precursor intersymbol interference without any substantial degradation in signal to noise ratio. The phase equalizer is implemented as a switched capacitor filter having a clock (switch) rate at least four times the data baud rate and a z-transfer function T(z) of a form: ##EQU1## wherein G, A, and B are fixed but adjustable coefficients.
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IEEE Journal on Selected Areas in Communications, Mar., 1984, vol. SAC-2, No. 2, pp. 314-323, Piet J. Van Gerwen, "Design Considerations for a 144 kbit/s Digital Transmission Unit for the Local Telephone Network".
Kuntz Curtis
Level One Communications Inc.
Tse Young
LandOfFree
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