Patent ID: 8260144
Filing Date: 2012-09-04
Classification: H04B,H04L

Abstract:
1. A radio system, comprising: a digital signal processor configured to process a digital signal representing information to be communicated through a radio frequency transmission having a significant frequency component of between about 698 MHz and 50 GHz, having at least one input for receiving information, at least one first digital logic unit configured to define digital codes representing a modulated radio frequency signal oversampled with respect to the radio frequency transmission, and at least one second digital logic unit configured to produce a processed representation of the defined digital codes and an output, configured to present the processed representation to an optoelectronic transmitter adapted to communicate the processed representation through an optic communication medium, for receipt by an optoelectronic receiver adapted to receive the communicated processed representation from the optic communication medium, for amplification by an amplifier to amplify the received communicated radio frequency signal and generate a power radio frequency signal corresponding to the received communicated radio frequency signal, substantially without frequency translation, and for emission by an antenna adapted to emit the power radio frequency signal, wherein the processed representation of the defined digital codes is at least one of: (a) predistorted with respect to the digital codes, to increase a spur-free dynamic range of the power radio frequency signal with respect to a spur free dynamic range of a corresponding power radio frequency signal absent the predistortion, by reducing a power of at least one intermodulation signal, based on at least a predicted non-linear distortion; (b) a combination of least two sets of defined digital codes, each being sampled at a rate of between about 1.5 GHz and 100 GHz; (c) a signal representing at least one set of defined digital codes processed to reduce a peak to average power ratio of the radio frequency transmission after conversion to an analog radio frequency signal; and (d) a source encoded set of signals processing for driving a multiple antenna array.