Telecommunications – Transmitter – Diversity
Reexamination Certificate
2006-08-22
2006-08-22
Orgad, Edan (Department: 2618)
Telecommunications
Transmitter
Diversity
C455S103000
Reexamination Certificate
active
07095987
ABSTRACT:
A first downlink transmission beam and a second downlink transmission beam is determined based on a received user-derived signal. The first downlink transmission beam is substantially uncorrelated with the second downlink transmission beam. The first downlink transmission beam is associated with a portion within a first sector. The second downlink transmission beam is associated with a portion within a second sector. A first signal is diversity encoded to produce a first diversity-encoded signal. A second signal is diversity encoded to produce a second diversity-encoded signal. The first diversity-encoded signal is sent over the first downlink transmission beam. The second diversity-encoded signal is sent over the second downlink transmission beam.
REFERENCES:
patent: 5088108 (1992-02-01), Uddenfeldt et al.
patent: 5109528 (1992-04-01), Uddenfeldt
patent: 5327577 (1994-07-01), Uddenfeldt
patent: 5867527 (1999-02-01), Ziv et al.
patent: 5889494 (1999-03-01), Reudink et al.
patent: 6091788 (2000-07-01), Keskitalo et al.
patent: 6181276 (2001-01-01), Schlekewey et al.
patent: 6201801 (2001-03-01), Dent
patent: 6212406 (2001-04-01), Keskitalo et al.
patent: 6240098 (2001-05-01), Thibault et al.
patent: 6539209 (2003-03-01), Dajer et al.
patent: 6603809 (2003-08-01), Ionescu
patent: 6788661 (2004-09-01), Ylitalo et al.
patent: WO 00/67509 (2000-11-01), None
A. G. Dabak et al., “A Comparison of the Open Loop Transmit Diversity Schemes for Third Generation Wireless Systems”, IEEE, 2000, pp. 437-442.
A. Hottinen et al., “Transmit Diversity Using Filtered Feedback Weights in the FDD/WCDMA System”, IEEE, 2000, pp. 15-21.
M. Katz et al., “Extension of Space-Time Coding to Beamforming WCDMA Base Stations”, IEEE, 2000, pp. 1230-1234.
J. Ylitalo et al., “An Adaptive Antenna Method for Improving Downlink Performance of CDMA Base Stations”, IEEE, 1998, pp. 599-603.
D. Shim et al., “Should the Smart Antenna be a Tracking Beam Array or Switching Beam Array?”, IEEE, 1998, pp. 494-498.
K. Hugl et al., “Downlink Beamforming for Frequency Division Duplex Systems”, IEEE, 1999, pp. 2097-2101.
Y. C. Liang et al., “Downlink Channel Covariance Matrix (DCCM) Estimation and Its Applications in Wireless DS-CDMA Systems”, IEEE Journal on Selected Areas in Communications, vol. 19, No. 2, February 2001, pp. 222-232.
D. Rajan et al., “Transmit Diversity Schemes for CDMA-2000”, IEEE, 1999, pp. 669-673.
R. A. Soni et al., “Open-Loop Transmit Diversity in IS-2000 Systems”, IEEE, 1999, pp. 654-658.
E. Tiirola et al., “Performance Evaluation of Fixed-Beam Beamforming in WCDMA Downlink”, IEEE, 2000, pp. 700-704.
3rdGeneration Partnership Project; Technical Specification Group Radio Access Network; Physical Layer Procedures (TDD) (Release 1999), pp. 1-22.
G. D. Golden, et al., “Detection Algorithm and Initial Laboratory Results Using V-BLAST Space-Time Communication Architecture,” Electr. Lett., vol. 35(1), pp. 14-16, Jan. 1999.
Brothers, Jr. Louis R
Cangeme John
Flaig Alexander
MacMullan Samuel J
Poor H. Vincent
Brady III W. James
Orgad Edan
Perez Angelica
Telecky , Jr. Frederick J.
Texas Instruments Incorporated
LandOfFree
Method and apparatus for received uplinked-signal based... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for received uplinked-signal based..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for received uplinked-signal based... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3717603