Communications: directive radio wave systems and devices (e.g. – Directive – Utilizing correlation techniques
Patent
1998-04-01
1999-10-26
Blum, Theodore M.
Communications: directive radio wave systems and devices (e.g.,
Directive
Utilizing correlation techniques
455 63, G01S 316, G01S 328
Patent
active
059736429
ABSTRACT:
A technique for estimating parameters for adaptive antenna arrays in orthogonal frequency division multiplexing systems with co-channel interference is disclosed. Channel parameter estimation is preferentially performed using a two pass process that advantageously expands the temporal scope (relative to a single pass process) and considers past, present and future temporal channel estimations during parameter estimation. Channel parameters are estimated by processing the signals through fast Fourier transforms, temporal filters, and inverse fast Fourier transforms. The temporal filters optimize parameter estimation based upon instantaneous correlation of the received signals.
REFERENCES:
patent: 5483550 (1996-01-01), Hulbert
patent: 5524023 (1996-06-01), Tsujimoto
patent: 5550872 (1996-08-01), Liberti, Jr. et al.
patent: 5771439 (1998-06-01), Kennedy, Jr. et al.
Burton R. Saltzberg, "Performance of an Efficient Parallel Data Transmission System", IEEE Transactions on Communication Technology, Dec. 1967.
S. B. Weinstein, "Data Transmission by Freuency-Division Multiplexing Using the Discrete Fourier Transform", IEEE Transactions on Communication Technology, Oct. 1971.
Leonard J. Cimini, Jr., "Analysis and Simulation of a Digital Mobile Channel Using Orthogonal Frequency Division Multiplexing", IEEE Transactions on Communications, Jul. 1985.
Jack H. Winters,, "Signal Acquisition and tracking with adaptive Arrays in the Digital Mobile Radio System IS-54 with Flat Fading", IEEE Transactions on Vehicular Technology, Nov. 1993.
Jack H. Winters et al., "The Impact of Antenna Diversity on the Capacity of Wireless Communication Systems", IEEE Transactions on Communications, 1994.
Jan-Jaap Van De Beek et al., "On Channel Estimation in OFDM Systems", IEEE, 1995.
Ove Edfors et al., "OFDM Channel Estimation by Singular Value Decomposition", 1996 IEEE 46th Vehicular Technology Conference.
Vittoria Mignone et al., "CD3-OFDM: A Novel Demodulation Scheme for Fixed and Mobile Receivers", IEEE Transactions on Communications, Sep. 1996.
Robert L. Cupo et al., "A Four-Element Adaptive Antenna Array For IS-136 PCS Base Stations", 1997 IEEE 47th Vehicular Technology Conference, May 1997.
Ye (Geoffrey) LI et al., "Parameter Tracking of STE for IS-136 TDMA Systems with Rapid Dispersive Fading and Co-channel Interference", 1997 International Symposium on Personal, Indoor and Mobile Radio Communications, Proceedings, Sep. 1997.
Leonard J. Cimini, Jr. et al., "OFDM with Diversity and Coding for Advanced Cellular Internet Services", GLOBECOM 97, IEEE Global Telecommunications Conference, Nov. 1997.
Li Ye
Sollenberger Nelson Ray
AT&T Corp.
Blum Theodore M.
LandOfFree
Adaptive antenna arrays for orthogonal frequency division multip does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Adaptive antenna arrays for orthogonal frequency division multip, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Adaptive antenna arrays for orthogonal frequency division multip will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-769504