Pulse or digital communications – Receivers – Interference or noise reduction
Reexamination Certificate
2007-08-07
2007-08-07
Payne, David C. (Department: 2611)
Pulse or digital communications
Receivers
Interference or noise reduction
C375S346000, C455S132000, C455S296000
Reexamination Certificate
active
10677299
ABSTRACT:
Provided is an apparatus and method for canceling an interference signal in a packet data receiver in which data is transmitted and received over a packet data channel and a packet data control channel. The packet data channel is time-synchronized with the packet data control channel. A buffer temporarily stores a signal on the packet data channel, combined after being received through multiple paths, until the packet data control channel is decoded. An interference cancellation controller analyzes packet data control channel information obtained by decoding the packet data control channel, and outputs an interference cancellation command signal only when it is determined that effective packet data to be received exists in a current time slot. An interference cancellation section receives the packet data channel signal output from the buffer, and cancels an interference signal from the packet data channel signal only when the interference cancellation command signal is received.
REFERENCES:
patent: 4057834 (1977-11-01), Nakagome et al.
patent: 6012161 (2000-01-01), Ariyavisitakul et al.
patent: 6018546 (2000-01-01), Rege
patent: 6381728 (2002-04-01), Kang
patent: 6430214 (2002-08-01), Jalloul et al.
patent: 6570919 (2003-05-01), Lee
patent: 6788733 (2004-09-01), Whang et al.
patent: 2002/0015438 (2002-02-01), Ishizu et al.
patent: 2002/0126745 (2002-09-01), Prysby et al.
patent: 2002/0159507 (2002-10-01), Flaig et al.
patent: 2002/0177432 (2002-11-01), Casaccia et al.
patent: 2003/0022636 (2003-01-01), Ylitalo et al.
patent: 2003/0053524 (2003-03-01), Dent
patent: 2003/0157897 (2003-08-01), Maeda et al.
patent: 2004/0028121 (2004-02-01), Fitton
patent: 2004/0202151 (2004-10-01), Reznik et al.
patent: 967734 (1999-12-01), None
patent: 1083695 (2001-03-01), None
patent: 1233536 (2002-08-01), None
patent: 00-70836 (2000-05-01), None
patent: 02-23742 (2002-03-01), None
patent: 0233838 (2003-04-01), None
Robles, Roman “Multiuser Detection in 3G Basestations: Theory and Implementation Using MSC8102”, Retrieved from the Internet: URL:www.motorolo.com.cn/semiconductors/sndf-2002/ D503-WISD-US—SNDF—ASIA—02.PDF, Dec. 2, 2003.
I. Ghauri, et al., “Blind Channel Identification and Projection Receiver Determination for Multicode and Multirate Situations in DS-CDMA Systems”,Acoustics, Speech, and Signal Processing, 2001, vol. 4, pp. 7-11 (May 2001).
J.H. Horng, et al., “Capacity Enhancement of HSDPA in W-CDMA System”,Vehicular Technology Conference, 2002, vol. 2, 24-28, pp. 661-665 (Sep. 2002).
Roman Robles, “Multiuser Detection in 3G Basestations: Theory and Implementation Using MSC8102”,Motorola Document Classification, pp. 1-41 (May 2002).
Ahn Seong-Woo
Bae Sang-Min
Heo Seo-Weon
File Erin M.
Payne David C.
Roylance Abrams Berdo & Goodman L.L.P.
LandOfFree
Apparatus and method for canceling interference signals in a... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus and method for canceling interference signals in a..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus and method for canceling interference signals in a... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3856442