Multiple access technique for downlink multibeam digital...

Details Multiple access technique for downlink multibeam digital... Multiple access technique for downlink multibeam digital...

2006-08-08

2006-08-08

Nguyen, Steven (Department: 2668)

Multiplex communications

Generalized orthogonal or special mathematical techniques

C370S334000

Reexamination Certificate

active

07088671

ABSTRACT:
A multiple access communication system with communication links between one or more central nodes each with a transmitter1including an antenna with one or more antenna beams, and user terminals2located in antenna beam coverage area3. User terminals2assigned to one beam coverage area3use multiple access channels that are mutually orthogonal for receiving digital message information. These multiple access channels are reused by other user terminals2in adjacent and other beam regions. Single-axis error correcting coding4, interleaving5, channel assignment changes7, precoding8, and selected 90° phase rotation9are used in the central node transmitter1to reduce potential interference at a user terminal2from signals using the same orthogonal multiple access channel destined for user terminals2in other beam coverage areas3. The communication system can realize complete reuse of all orthogonal multiple access channels in other beam coverage areas, i.e., a reuse factor of unity.

REFERENCES:
patent: 4112370 (1978-09-01), Monsen
patent: 4328585 (1982-05-01), Monsen
patent: 4365338 (1982-12-01), McRae et al.
patent: 4644562 (1987-02-01), Kavehrad et al.
patent: 5220320 (1993-06-01), Assal et al.
patent: 5513215 (1996-04-01), Marchetto et al.
patent: 5561610 (1996-10-01), Schricker et al.
patent: 5590399 (1996-12-01), Matsumoto et al.
patent: 5596333 (1997-01-01), Bruckert
patent: 5619503 (1997-04-01), Dent
patent: 5680419 (1997-10-01), Bottomley
patent: 5736959 (1998-04-01), Patterson et al.
patent: 5838742 (1998-11-01), Abu-Dayya
patent: 5987037 (1999-11-01), Gans
patent: 6157811 (2000-12-01), Dent
patent: 6882846 (2005-04-01), O'Byrne
patent: 2002/0107024 (2002-08-01), Dey Roy
patent: 2003/0123425 (2003-07-01), Wallon et al.
patent: 0 650 271 (1995-04-01), None
“An Adaptive Receiver for Digital Signalling Through Channels With Intersymbol Interference”, J.G. Proaxis and J.H. Miller, IEEE Transactions on Information Theory, vol. IT-15, No. 4, Jul. 1969, pp. 484-497.
“MMSE Equalization of Interference on Fading Diversity Channels”, P. Monsen, IEEE Conference on Communications, Conference Record, vol. 1, Denver, CO, Jun. 1981, pp. 12.2-1 - 12.2-5.
“Adaptive Equalization and Interference Cancellation for Wireless Communication Systems”, B.C.W. Lo and K.B. Letaief, IEEE Transactions on Communications, vol. 47, No. 4, Apr. 1999, pp. 538-545.
“Dynamic Channel Assignment in High-Capacity Mobile Communications Systems”, D.C. Cox and D.O. Reudink, The Bell System Technical Journal, vol. 50, No. 6, Jul.-Aug. 1971, pp. 1833-1857.
“MMSE Equalization of Interference on Fading Diversity Channels”, P. Monsen, IEEE Transactions on Communications, vol. COM-32, No. 1, Jan. 1984, pp. 5-12.
“Linear Multiuser Detectors for Synchronous Code-Division Multiple Access Channels”, R. Lupas and S. Verdu, , IEEE Transactions on Information Theory, vol. 35, No. 1, Jan. 1989, pp. 123-136.
“Decorrelating Decision-Feedback Multiuser Detector for Synchronous Code-Division Multiple-Access Channel”, A. Duel-Hallen, IEEE Transactions on Communications, vol. COM-41, No. 2, Feb. 1993, pp. 285-290.
“A Family of Multiuser Decision-Feedback Detectors for Asynchronous Code-Division Multiple-Access Channels”, A. Duel-Hallen, IEEE Transactions on Communications, vol. 43, No. 2/3/4, Feb./Mar./Apr. 1995, pp. 421-434.
“Information-Theoretic Considerations for Symmetric, Cellular, Multiple-Access Fading Channels-Part I”, S. Shamai and A.D. Wyner, IEEE Transactions on Information Theory, vol. 43, No. 6, Nov. 1997, pp. 1877-1894.
Mobile Station-Base Station Compatibility Standard for Dual-Mode Wideband Spread Spectrum Cellular System, EIA/TI IS-95, 1992. (Abstract Only).
“Feedback Equalization for Fading Dispersive Channels”, P. Monsen, IEEE Transactions on Information Theory, Jan. 1971, pp. 56-64.
Least Square Estimation with Application to Digital Signal Processing, A.A. Giordano and F.M. Hsu, John Wiley and Sons, New York, NY, 1985, Chapter 3.3.
*Copy of European Search Report dated Apr. 3, 2003 citing these refernces.
“Blind Multiuser Detection: A Subspace Approach”, X. Wang and H.V. Poor, IEEE Transactions on Information Theory, vol. 44, No. 2, Mar. 1998, pp. 677-690.
“Minimum Probability of Error for Asynchronous Gaussian Multiple-Access Channels”, S. Verdu, IEEE Transactions on Inforamtion Theory, vol. IT-32, No. 1, Jan. 1986, pp. 85-96.
“Adaptive Space-Time Feedforward/Feedback Detection for High Data Rate CDMA in Frequency-Selective Fading,” J. Smee and S.C. Schwartz, IEEE Transactions on Communications, vol. 49, No. 2, Feb. 2001, pp. 317-328.
“Decision Feedback Equalization for CDMA in Indoor Wireless Communications”, M. Abdulrahman, A.U.H. Sheikh, and D.D. Falconer, IEEE Journal on Selected Areas in Communications, vol. 12, No. 3, May 1994, pp. 698-706.
“Channel Equalization for Block Transmission Systems”, G.K. Kaleh, IEEE Journal on Selected Areas in Communications, vol. 13, No. 1, Jan. 1995, pp. 110-121.
“Tracking of Time-Varying Mobile Radio Channels-Part I: The Wiener LMS Algorithm,” L. Lindbom, M. Sternad, and A. Ahlen., IEEE Transactions on Communcations, vol. 49, No. 12, Dec. 2001, pp. 2207-2217.
“Block Channel Equalization in the Presence of a Cochannel Interferent Signal,” A. Ginesi, G.M. Vitetta, and D.D. Falconer, IEEE Journal on Selected Areas in Communications, vol. 17, No. 11, Nov. 1999, pp. 1853-1862.
“Blind Adaptive Multiuser Detection”, M. Honig, U. Madhow, and S. Verdu, IEEE Transactions on Information Theory, vol. 41, No. 4, Jul. 1995, pp. 944-960.
“On Multipath Channel Estimation for CDMA Systems Using Multiple Sensors,” Sengupta et al., IEEE Transactions on Communcations, vol. 49, No. 3, Mar. 2001, pp. 543-553.
“Adaptive Receiver Structures for Asynchronous CDMA Systems”, P.B. Rapajic and B.S. Vucetic, IEEE Journal of Selected Areas in Communications, vol. 12, No. 4, May 1994, pp. 685-697.
“Performance Analysis of Minimum Variance CDMA Receivers”, M.K. Tsatsanis and Z. Xu, IEEE Transactions on Signal Processing, vol. 46, No. 11, Nov. 1998, pp. 3014-3022.
“An Algorithm For Reducing the Bandwidth and Profile of a Sparse Matrix”, N.E. Gibbs, W.G.
Poole, Jr., and P.K. Stockmeyer, Siam J. Numer.Anal., vol. 13, No. 2, Apr. 1976, pp. 236-250.

Affiliated with

Also associated with

Rating

Multiple access technique for downlink multibeam digital... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Multiple access technique for downlink multibeam digital..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multiple access technique for downlink multibeam digital... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3671207