Invention Grant
- Patent Title: Method and apparatus for spur cancellation in an orthogonal frequency division multiplexing communication system
- Patent Title (中): 在正交频分复用通信系统中用于杂散消除的方法和装置
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Application No.: US11554788Application Date: 2006-10-31
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Publication No.: US07646704B2Publication Date: 2010-01-12
- Inventor: Xiaoyong Yu , Thomas J. Kovarik , Alan P. Rottinghaus
- Applicant: Xiaoyong Yu , Thomas J. Kovarik , Alan P. Rottinghaus
- Applicant Address: US IL Schaumburg
- Assignee: Motorola, Inc.
- Current Assignee: Motorola, Inc.
- Current Assignee Address: US IL Schaumburg
- Agent Steven A. May
- Main IPC: H04J11/00
- IPC: H04J11/00

Abstract:
A communication device is provided that is capable of operating in an OFDM or communication system and that provides for cancellation of in-band spurs. The communication device identifies a bin of multiple bins associated with an output of an inverse transformer and comprising a spur and estimates one or more spur phase parameters and a spur amplitude in association with the identified bin. In one embodiment of the present invention, the one or more spur phase parameters includes a spur initial phase and a spur change rate. When the communication device receives a signal from another communication device, the communication device transforms the received signal to produce a multiple parallel output signals that are each associated with a bin of the multiple bins and cancels a spur in an output signal associated with the identified bin based on the estimated one or more spur phase parameters and spur amplitude.
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