Multi-channel digital transceiver and method

Pulse or digital communications – Receivers – Interference or noise reduction

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455275, 4552761, H04L 102

Patent

active

061670995

ABSTRACT:
A multi-channel digital transceiver (400) receives uplink radio frequency signals and converts these signals to digital intermediate frequency signals. Digital signal processing, including a digital converter module (426), is employed to select digital intermediate frequency signals received at a plurality of antennas (412) and to convert these signals to baseband signals. The baseband signals are processed to recover a communication channel therefrom. Downlink baseband signals are also processed and digital signal processing within the digital converter module (426) up converters and modulates the downlink baseband signals to digital intermediate frequency signals. The digital intermediate frequency signals are converted to analog radio frequency signals, amplified and radiated from transmit antennas (420).

REFERENCES:
patent: 3991277 (1976-11-01), Hirata
patent: 4101738 (1978-07-01), Bellanger et al.
patent: 4112374 (1978-09-01), Steinbrecher
patent: 4206320 (1980-06-01), Keasler et al.
patent: 4230956 (1980-10-01), Steinbrecher
patent: 4237551 (1980-12-01), Narasimha
patent: 4355405 (1982-10-01), Ruys et al.
patent: 4492962 (1985-01-01), Hansen
patent: 4514760 (1985-04-01), Balaban et al.
patent: 4517586 (1985-05-01), Balaban et al.
patent: 4621337 (1986-11-01), Cates et al.
patent: 4652858 (1987-03-01), Kokubo et al.
patent: 4803727 (1989-02-01), Holt et al.
patent: 4881222 (1989-11-01), Goeckler et al.
patent: 4884265 (1989-11-01), Schroeder et al.
patent: 4893316 (1990-01-01), Jane et al.
patent: 5101501 (1992-03-01), Gilhousen et al.
patent: 5103459 (1992-04-01), Gilhousen et al.
patent: 5109390 (1992-04-01), Gilhousen et al.
patent: 5136612 (1992-08-01), Bi
patent: 5159608 (1992-10-01), Falconer et al.
patent: 5170413 (1992-12-01), Hess et al.
patent: 5187809 (1993-02-01), Rich et al.
patent: 5220557 (1993-06-01), Kelley
patent: 5224122 (1993-06-01), Bruckert
patent: 5278837 (1994-01-01), Kelley
patent: 5293329 (1994-03-01), Wishart et al.
patent: 5295153 (1994-03-01), Gudmundson
patent: 5299192 (1994-03-01), Guo et al.
patent: 5313279 (1994-05-01), Wang et al.
patent: 5323157 (1994-06-01), Ledzius et al.
patent: 5347284 (1994-09-01), Volpi et al.
patent: 5396489 (1995-03-01), Harrison
patent: 5406629 (1995-04-01), Harrison et al.
patent: 5797777 (1998-08-01), Terlep et al.
patent: 5909470 (1999-06-01), Barratt et al.
Harris Semiconductor Digital Signal Processing Databook, "Numerically Controlled Oscillator/Modulator", HSP45116, pp. 5-26/5-40, Harris Corporation.
Fundamentals of Digital Image Processing by Anil K. Jain, University of California, Davis, 1989 by Prentice-Hall, Inc., pp. 155-159, 185-187.
"Robust Digital Filter Structures", 7-3 Cascade Form Digital Filter Structures, Handbook for Digital Signal Processing by Sanjit Mitra and James Kaiser, John Wiley & Sons 1993.
Hogenauer, Eugene B. "An Economical Class of Digital Filters for Decimation and Interpolation", IEEE Transactions on Acoustics, Speech and Signal Processings, vol. ASSP-29, No. 2.
ETSI-SMG, GSM 06.31, 4.0.0, Discontinuous Transmission (DTX) for Full Rate Speech Transmission Channels, Oct. 1992.
EIA/TIA/IS-95, Requireemnts for Base Station CDMA Operation, pp. 7-1/7-185, Appendix A Requiremetns for CDMA Service OptionsA-1/A-68.

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