Pulse or digital communications – Receivers – Interference or noise reduction
Reexamination Certificate
2011-08-09
2011-08-09
Odom, Curtis B (Department: 2611)
Pulse or digital communications
Receivers
Interference or noise reduction
C370S203000
Reexamination Certificate
active
07995686
ABSTRACT:
The present invention relates to a system for canceling co-channel interference (CC) in a cellular orthogonal frequency division multiplexing (OFDM) system. The system canceling co-channel interference (CCI) in a cellular orthogonal frequency division multiplexing (OFDM) system comprises a mobile station (MS) receiver including a feedback generation unit for generating a feedback to a base station (BS) so as to control a transmission power of the transmitting frame of the BS, and a maximum likelihood estimation (MLE) CCI cancellation unit for canceling CCI signals arriving from neighbor cells; and a BS transmitter including a closed-loop power control unit for controlling the transmission power of the transmitting frame according to the feedback received from the MS such that received power of desired signal at the MS receiver is different from that of an interferer signal.
REFERENCES:
patent: 4748639 (1988-05-01), Feggeler
patent: 2004/0101068 (2004-05-01), Wang et al.
patent: 2005/0122998 (2005-06-01), Kamerman et al.
patent: 2005/0136840 (2005-06-01), Molnar et al.
patent: 2005/0148355 (2005-07-01), Naguib et al.
patent: 2005/0180760 (2005-08-01), Feced et al.
patent: 2006/0120473 (2006-06-01), Baum
patent: 2006/0126755 (2006-06-01), Itou
patent: 2006/0286997 (2006-12-01), Seki et al.
patent: 1 471 655 (2006-06-01), None
patent: 2003-179528 (2003-06-01), None
patent: 10-2005-0005991 (2005-01-01), None
patent: 10-2005-0102434 (2005-10-01), None
patent: 10-2006-0047736 (2006-05-01), None
patent: 10-2006-0054440 (2006-05-01), None
patent: WO 2005/018213 (2005-02-01), None
patent: WO 2005/107084 (2005-11-01), None
Masaki Shibahara et al., “Performance Evaluation of Frequency Spread Coding and Frequency Interleaving for OFDM Systems Using Adaptive Co-Channel Interference Canceller,” Department of Information and Computer Science, Keio University, IEIC Technical Report, pp. 61-66, Jul. 12, 2001, vol. 101, No. 197.
Hitoshi, Yoshino et al., “Adaptive Co-Channel Interference (CCI) Cancellation for OFDM Communication Systems,” IEEE, Feb. 15, 2000, pp. 245-250.
Chang Kyung Hi
Mohaisen Manar
Inha-Industry Partnership Institute
Morgan & Lewis & Bockius, LLP
Odom Curtis B
LandOfFree
System and method for co-channel interference cancellation... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with System and method for co-channel interference cancellation..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System and method for co-channel interference cancellation... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2643085