United States Patent 7,702,288
Demir , et al. April 20, 2010
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Digital baseband system and process for compensating for analog radio transmitter impairments
Abstract
In order to compensate for performance degradation caused by inferior low-cost analog radio component tolerances of an analog radio, a wireless communication transmitter employs a control process to implement numerous digital signal processing (DSP) techniques to compensate for deficiencies of such analog components so that modern specifications may be relaxed. By monitoring a plurality of parameters associated with the analog radio, such as temperature, bias current or the like, enhanced phase and amplitude compensation, as well as many other radio frequency (RF) parameters may be implemented.
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Inventors: Demir; Alpaslan (East Meadow, NY), Kazakevich; Leonid (Plainview, NY), Kearney; Kenneth P. (Smithtown, NY)
Assignee: InterDigital Technology Corporation (Wilmington, DE)
Appl. No.: 11/590,947
Filed: November 1, 2006
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Related U.S. Patent Documents
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Application Number Filing Date Patent Number Issue Date
10736294 Dec., 2003 7133644
60476314 Jun., 2003
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Current U.S. Class: 455/67.11 ; 375/319; 455/324; 455/63.1; 455/67.13
Current International Class: H04B 17/00 (20060101); H04B 1/26 (20060101); H04L 25/06 (20060101)
Field of Search: 455/67.11,67.13,63.1,324,276.1,283,278.1 375/319 331/66,69,70,176
