Pulse or digital communications – Receivers – Particular pulse demodulator or detector
Patent
1998-05-07
2000-11-14
Le, Amanda T.
Pulse or digital communications
Receivers
Particular pulse demodulator or detector
375347, 375349, H04B 708
Patent
active
06148041&
ABSTRACT:
Methods and systems for processing signals in radio communication systems are described which include processes for handling co-channel interference while reducing the number of Viterbi states being processed. A spatial analogy to the Viterbi MLSE process is provided. Both the uplink and downlink cases are described.
REFERENCES:
patent: 3917998 (1975-11-01), Welti
patent: 4450582 (1984-05-01), Russell
patent: 5111534 (1992-05-01), Benner
patent: 5119504 (1992-06-01), Durboraw, III
patent: 5161248 (1992-11-01), Bertiger et al.
patent: 5191594 (1993-03-01), Argo et al.
patent: 5202903 (1993-04-01), Okanoue
patent: 5249181 (1993-09-01), Wang et al.
patent: 5303393 (1994-04-01), Noreen et al.
patent: 5343512 (1994-08-01), Wang et al.
patent: 5363428 (1994-11-01), Nagashima
patent: 5390215 (1995-02-01), Antia et al.
patent: 5566209 (1996-10-01), Forssen et al.
patent: 5615409 (1997-03-01), Forssen et al.
patent: 5796788 (1998-08-01), Bottomley
International Search Report regarding International Appl. No. PCT/US96/02498, Mailed Jul. 4, 1996.
Zvonar et al., "Optimum Multiuser Detection in Single-Path Rayleigh Fading Channels," 29.sup.th Allerton Conf. on Communication, Control and Computing (Oct. 1991), pp. 390-399.
Zvonar et al., "On Multiuser Detection in Asynchronous CDMA Flat Rayleigh Fading Channels," PIMRC (1992), 5 pgs.
Zvonar et al., "A Comparison of Differentially Coherent and Coherent Multiuser Detection with Imperfect Phase Estimates in Rayleigh Fading Channel," IT (1993), one page.
Zvonar et al., "Adaptive Multiuser Receiver for Fading CDMA Channels With Severe ISI," Proc. of Conf. on Information Sciences and Systems (Mar. 1993), 6 pgs.
Xie, "Signal Detection and Parameter Estimation in Multiuser Communications," IEEE Transactions on Communications, vol. 41, No. 7 (Aug. 1993), pp. 1208-1216.
Yoon, "A Spread-Spectrum Multiaccess System with Cochannel Interference Cancellation for Multipath Fading Channels," IEEE Journal of Selected Areas in Communications, vol. 11, No. 7 (Sep. 1993), pp. 1067-1075.
Kajiwara, "On Synchronous CDMA for Mobile Communications," IEEE Globecom (1992), pp. 858-862.
Zvonar et al., "Optimum Detection in Asynchronous Multiple-Access Multipath Rayleigh Fading Channels," 26.sup.th Annual Conf. on Info. Sciences and Systems, Princeton Univ. (Mar. 1992), 6 pgs.
Zvonar et al., "Suboptimum Multiuser Detector for Synchronous CDMA Frequency-Selective Rayleigh Fading Channels," CTMC (1992), 5 pgs.
Zvonar et al., "Coherent and Differentially Coherent Multiuser Detectors for Asynchronous CDMA Frequency-Selective Channels," IEEE MILCOM (1992), pp. 0442-0446.
Kummer, Wolfgana H., Life Fellow, "Basic Array Theory," Proc. of the IEEE, vol. 80, No. 1 (Jan. 1992), pp. 127-1140.
Gabriel, William F., Life Fellow, "Adaptive Processing Array Systems," Proc. of the IEEE, vol. 80, No. 1 (Jan. 1992), pp. 52-162.
Anderson, Soren, et al., "An Adaptive Array for Mobile Communication Systems," IEEE Transactions on Vehicular Technology, vol. 40, No. 1 (Feb. 1991), pp. 230-236.
Dilsavor, Ronald L. et al., "Analysis of Modified SMI Method for Adaptive Array Weight Control," IEEE Transactions on Signal Processing, vol. 41, No. 2 (Feb. 1993), pp. 721-726.
"Request for Pioneer's Preference," filed May 4, 1992 before the Federal Communications Commission, Washington, D.C. 20554, 24 pgs., Docket No. 90-314. Appendix A, "Appendix to Request of Spatial Communications, Inc. for a Pioneer's Preference in the Licensing Process for Personal Communications Services," Implementing SDMA in the PCS Environment Technical and Economic Factors; Appendix B, Spatial Communications Inc. Corporate Resume; and Appendix C, Declaration of Dr. Richard H. Roy.
Craig, A.D., et al., British Aerospace (Space Systems) Ltd., "Final Report of Study on Digital Beamforming Networks," European Space Agency Contract Report (Jul. 1990), 28 pgs.
Abbott, Timothy M., "Requirements of a Mobile Satellite Service," Skylink Corp., USA, pp. 212-215.
Cooper, M., et al., "SDMA Technology Overview and Development Status," Array Comm. (Sep. 1992), pp. 1-16.
Ericsson Inc.
Le Amanda T.
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