Patent ID: 8260145
Filing Date: 2012-09-04
Classification: H04B,H04L

Abstract:
1. A radio system, comprising: an optoelectronic receiver configured to receive an input from an optic communication medium comprising an analog domain representation of a radio frequency signal having spectral components having a frequency of 698 MHz to 50 GHz; a converter configured to digitize the analog domain representation at a sampling rate of at least 1.4 gigasamples per second; and a digital signal processor comprising a look-up table, configured to reverse a non-linear distortion of the digitized analog domain representation, and to effectively reduce intermodulation signal components resulting from a non-linear distortion present in the digitized analog domain representation by determining an inverse distortion function effective for inverting the non-linear distortion of the digitized analog domain representation, and inverting the non-linear distortion based on the determined inverse distortion, wherein the digital signal processor improves the effective spur-free dynamic range of the digitized analog domain representation by at least 3 dB.