Multi-channel digital transceiver and method

Pulse or digital communications – Receivers – Interference or noise reduction

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

455133, 455275, H04B 708

Patent

active

058188835

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: 3783385 (1974-01-01), Dunn et al.
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: 4316282 (1982-02-01), Macina
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: 4616364 (1986-10-01), Lee
patent: 4621337 (1986-11-01), Cates et al.
patent: 4652858 (1987-03-01), Kokubo et al.
patent: 4710944 (1987-12-01), Nossen
patent: 4785447 (1988-11-01), Ichiyoshi
patent: 4803727 (1989-02-01), Holt et al.
patent: 4876542 (1989-10-01), van Bavel et al.
patent: 4881191 (1989-11-01), Morton
patent: 4881222 (1989-11-01), Goeckler et al.
patent: 4884265 (1989-11-01), Schroeder et al.
patent: 4893316 (1990-01-01), Janc et al.
patent: 5001742 (1991-03-01), Wang
patent: 5043933 (1991-08-01), Boutaud et al.
patent: 5046066 (1991-09-01), Messenger
patent: 5101501 (1992-03-01), Gilhousen et al.
patent: 5103459 (1992-04-01), Gilhouser 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: 5220583 (1993-06-01), Solomon
patent: 5224122 (1993-06-01), Bruckert
patent: 5274836 (1993-12-01), Lux
patent: 5278837 (1994-01-01), Kelley
patent: 5289464 (1994-02-01), Wang
patent: 5293329 (1994-03-01), Wishart et al.
patent: 5295153 (1994-03-01), Gudmundson
patent: 5299192 (1994-03-01), Guo et al.
patent: 5305349 (1994-04-01), Dent
patent: 5313279 (1994-05-01), Wang et al.
patent: 5323157 (1994-06-01), Ledzius et al.
patent: 5323391 (1994-06-01), Harrison
patent: 5335251 (1994-08-01), Onishi 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: 5412352 (1995-05-01), Graham
patent: 5533023 (1996-07-01), Ohlson et al.
Jain, Anil K., "Fundamentals of Digital Image Processing", Printice-Hall, Inc., 1989, pp. 155-159, 185-187.
Bellanger, et al., "TDM-FDM Transmultiplexer: Digital Polyphase and FFT". IEEE Transactions on Communications, vol. Comm-22, No. 9, Sep. 1974, pp. 1199-1206.
Crochiere, et al., "Multirate Digital Signal Processing", Chapter 2: pp. 20-21, 32 and 48-56; Chapter 3: pp. 59-126; and Chapter 7: pp. 289-404.
Harris Semiconductor Digital Signal Processing Databook, "Numberically 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 Sanji 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 Processing, vol. ASSP-29, No. 2.
ETSI-SMG, GSM 06.31, 4.0.0., Discontinuous Transmission (DTX) for Full Rate Speech Transmission Channels, Oct. 1992.
ETSI-SMG, GSM Jun. 12, 4.0.1, Comfort Noise Aspects for Full Rate Speech Traffic Channels, Jan. 1993.
EIA-TIA/IS-95, Requirements for Base Station CDMA Operation, pp. 7-1/7-185, Appendix A Requirements for CDMA Service Options A-1/A-68.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Multi-channel digital transceiver and method does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Multi-channel digital transceiver and method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multi-channel digital transceiver and method will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-87368

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.