Pulse or digital communications – Systems using alternating or pulsating current – Antinoise or distortion
Reexamination Certificate
2007-07-10
2007-07-10
Ha, Dac (Department: 2611)
Pulse or digital communications
Systems using alternating or pulsating current
Antinoise or distortion
C375S254000, C375S278000, C375S284000, C375S296000, C375S346000
Reexamination Certificate
active
10406929
ABSTRACT:
An adaptive broadband post-distortion receiver for wireless digital communications improves performance of a wireless digital communications system. The improved performance of the system includes improved linear AM-AM and AM-PM responses approaching saturation. Indeed, the proposed adaptive broadband post-distortion receiver has an effect on attributes such as bit error rate and transmitter power efficiency and, in turn, on modulation and bandwidth. The adaptive broadband post-distortion receiver is configured with an adaptively controlled IF post-distorter located at the IF stage of the receiver. The placement of the distortion canceling function in the IF section of the receiver lends itself to broadband applications. The post-distorter is configured to cancels the distortion produced by the transmitter and receiver as it is adaptively controlled using bit error rate calculations. The distortion canceling utilizes bit error rate information that is otherwise available in the receiver.
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Matsumoto Frank S.
Pham David C. M.
Ha Dac
Harris Stratex Networks Operating Corporation
Sherry Leah
Thelen Reid Brown Raysman & Steiner LLP
Wang Ted M.
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