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Image rejection compensation method, circuit, receiver device and computer program product

A sequence and sample sequence technology, applied in the field of interference generated by reception, can solve the problems of time-consuming calibration operations, increasing the cost of EWS or final test phase, etc.

Pending Publication Date: 2021-06-18
STMICROELECTRONICS SRL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0026] Another disadvantage of solutions using training sequences is that such sequences are employed at the Electronic Wafer Sorting (EWS) stage in order to properly calibrate the receiver, or at the application level prior to operation during the final test of the device. sequence to properly calibrate the receiver
Calibration operations can be time consuming, adding cost to the EWS or final testing phase
Clients may prefer to avoid applying a calibration phase at the application level

Method used

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  • Image rejection compensation method, circuit, receiver device and computer program product
  • Image rejection compensation method, circuit, receiver device and computer program product
  • Image rejection compensation method, circuit, receiver device and computer program product

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Embodiment Construction

[0056] In the ensuing description, one or more specific details are set forth, which are intended to provide an in-depth understanding of examples of the embodiments of the specification. Embodiments may be obtained without one or more of the specific details, or with other methods, components, materials, etc. In other instances, known structures, materials, or operations are not detailed or described so as not to obscure aspects of the embodiments.

[0057] In the scope of this specification, references to "an embodiment" or "one embodiment" are intended to indicate that a particular configuration, structure, or characteristic described with reference to the embodiment is included in at least one embodiment. Thus, phrases such as "in an embodiment" or "in one embodiment," which may appear in one or more places in this specification, are not necessarily referring to the same embodiment.

[0058] Furthermore, particular configurations, structures or characteristics may be comb...

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Abstract

The embodiment of the invention relates to an image rejection compensation method, a circuit, a receiver device and a computer program product. The input signal has a desired signal component and an interfering signal component superimposed on the desired signal component. An interference component estimation process is applied to the input signal, as a result of which a filtered signal is obtained, the filtered signal comprising a filtered sequence of data samples. The filtered signal is subtracted from the input signal, wherein as a result an output signal comprising a sequence of output data samples is obtained. The interference component estimation process applies a conjugate process to the input signal, wherein a conjugate version of the input signal is provided. Adaptive signal processing coefficients are calculated using the adaptive processing coefficients, and adaptive signal processing is applied to a conjugate version of the input signal.

Description

technical field [0001] This specification relates to a signal processing method and receiver architecture for a wideband radio communication receiver. In particular, the present description relates to compensating for interference generated by receiver I / Q imbalance, especially for the reception of wideband signals. [0002] One or more embodiments may be applied to, for example, terrestrial broadcast radio receivers, satellite broadcast radio receivers, GNSS receivers, and the like. Background technique [0003] The reception of radio frequency channels by using a heterodyne architecture suffers from the interference of so-called image signals. [0004] For example, radio receiver architectures, especially those based on heterodyne technology and employing I / Q mixers in the radio frequency front end (RFFE for short) to tune to radio frequency (RF) channels can be affected by parasitic effects : Due to crosstalk generated by I / Q imbalance, the attenuated copy of the so-cal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03H17/00H03H21/00H03H17/02H03F1/26H04B1/26
CPCH03H17/00H03H21/0027H03H21/0012H03H17/02H03F1/26H04B1/26H03H2017/0081H03H2021/0094H04L27/3863H04L27/0014H04L27/26412H04L27/2089H04L27/364H04L27/368
Inventor A·巴尔别里F·德罗尔托
Owner STMICROELECTRONICS SRL