Invention Grant
- Patent Title: Method and apparatus for cross-talk cancellation in frequency division multiplexed transmission systems
- Patent Title (中): 频分多址传输系统中串扰消除的方法和装置
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Application No.: US12020722Application Date: 2008-01-28
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Publication No.: US08121062B2Publication Date: 2012-02-21
- Inventor: Kameran Azadet
- Applicant: Kameran Azadet
- Applicant Address: US PA Allentown
- Assignee: Agere Systems Inc.
- Current Assignee: Agere Systems Inc.
- Current Assignee Address: US PA Allentown
- Agency: Ryan, Mason & Lewis, LLP
- Main IPC: H04B5/16
- IPC: H04B5/16

Abstract:
A method and apparatus are disclosed for canceling cross-talk in a frequency-division multiplexed communication system. The disclosed frequency-division multiplexed communication system employs multiple carriers having overlapping channels and provides an improved cross-talk cancellation mechanism to address the resulting interference. Bandwidth compression is achieved using n level amplitude modulation in each frequency band. An FDM receiver is also disclosed that decomposes the received broadband signal into each of its respective frequency bands and returns the signal to basehand in the analog domain. Analog requirements are relaxed by removing cross-talk from adjacent R-F channels, from image bands, and minimizing the performance degradation caused by In-phase and Quadrature-phase (I/Q) phase and gain mismatches in modulators and demodulators. The disclosed transmitter or receiver (or both) can be fabricated on a single integrated circuit.
Public/Granted literature
- US20080117805A1 Method and apparatus for cross-talk cancellation in frequency division multiplexed transmission systems Public/Granted day:2008-05-22
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