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A method and device for correcting IQ unbalance, and receiver

A correction method and amplitude unbalanced technology, which is applied to the shaping network in the transmitter/receiver, baseband system components, multi-frequency code system, etc., can solve problems such as imbalance, and achieve the effect of improving receiving accuracy

Active Publication Date: 2021-07-20
上海擎昆信息科技有限公司
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Problems solved by technology

[0005] The purpose of the present invention is to provide a correction method, device and receiver for IQ imbalance, which are used to solve the problem of IQ imbalance existing in the system, so as to improve the performance of the receiver

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  • A method and device for correcting IQ unbalance, and receiver
  • A method and device for correcting IQ unbalance, and receiver
  • A method and device for correcting IQ unbalance, and receiver

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Embodiment Construction

[0035] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the specific implementation manners of the present invention will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention, and those skilled in the art can obtain other accompanying drawings based on these drawings and obtain other implementations.

[0036] In order to make the drawing concise, each drawing only schematically shows the parts related to the present invention, and they do not represent the actual structure of the product. In addition, to make the drawings concise and easy to understand, in some drawings, only one of the components having the same structure or function is schematically drawn or only one of them is marked. Herein, "a" not only means "only one", but also means "more than one".

[0037] An embodime...

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Abstract

The present invention provides a correction method and device for IQ imbalance, and a receiver, including: during initial synchronization, perform the first IQ imbalance parameter estimation in the time domain according to the received first pilot signal, and obtain the first Imbalance parameter: during normal service reception, the first correction of IQ imbalance is performed on the received signal in the time domain according to the first imbalance parameter. The present invention performs receiver IQ unbalance compensation by adopting a method of combining coarse correction and fine correction, thereby improving receiving accuracy without increasing consumption of additional frequency spectrum resources.

Description

technical field [0001] The invention relates to the field of wireless communication, in particular to an IQ imbalance correction method, device and receiver. Background technique [0002] The radio frequency transceiver of the wireless communication system usually has two IQ signals in the transmitting channel and the receiving channel: the in-phase signal (I channel, In-phase) and the quadrature signal (Q channel, Quadrature). [0003] Ideally, the amplitude and phase information of the modulated IQ two-way signals should match, that is, the amplitudes of the IQ two-way signals are equal, and the phase difference is exactly 90 degrees (that is, completely orthogonal). However, in an actual communication system, due to physical limitations of circuit hardware and inevitable design errors in circuit design, there will be a mismatch between the amplitude and phase of the two signals, that is, IQ imbalance (or IQ mismatch). [0004] The existence of IQ imbalance will increase ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L25/03H04L27/26
CPCH04L25/03H04L27/26
Inventor 谭定富武传国是元吉唐兵
Owner 上海擎昆信息科技有限公司
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