Point to Point Split Mount Impairment Correction System
AssigneeBroadcom Corporation
InventorIgal Yehuda KUSHNIR
Life of this patent
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Abstract
Systems and methods are provided for lowering the cost and power consumption of outdoor units (ODUs) by providing digital corrections of ODU impairments within indoor units (IDUs). For example, in an embodiment, an error correction module located in the IDU can digitally correct the ODU impairments. Embodiments of the present disclosure allow direct transmission and direct reception in ODUs without any image or LO leakage filtering.
Claims19
An indoor unit (IDU), comprising:
- an oscillator configured to provide a first signal at a first frequency;
- a down-converter configured to receive the first signal and a second signal having a second frequency generated by an outdoor unit (ODU) coupled to the IDU, wherein the down-converter is configured to down-convert the second signal to using the first signal;
- and
- an error correction module coupled to the oscillator and the down-converter, wherein the error correction module is configured to adjust the oscillator, based on a frequency output of the down-converter, so that the first frequency matches the second frequency.
An error correction module for an indoor unit (IDU), the error correction module comprising:
- a first least mean square (LMS) adaptation module configured to correct a receive in-phase/quadrature (I/Q) mismatch for a signal received from an outdoor unit (ODU);
- a carrier error estimation and adaptation module configured to correct a rotation error of the signal;
- and
- a second LMS adaptation module configured to correct a transmit in-phase/quadrature (I/Q) mismatch for the signal.
A method for compensating for impairments in an indoor unit (IDU), the method comprising:
- receiving, using a processing device, a signal from an outdoor unit (ODU);
- matching, using the processing device, a frequency of the IDU to a frequency of the ODU;
- estimating, using the processing device, a reference frequency of the ODU;
- and
- compensating, using the processing device, for an impairment in the signal.
Dependencies are inferred from the claim text.