IQ imbalance correction method and device, 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: 2021-06-01
上海擎昆信息科技有限公司
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  • Abstract
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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, whi

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  • IQ imbalance correction method and device, and receiver
  • IQ imbalance correction method and device, and receiver
  • IQ imbalance correction method and device, 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 invention provides an IQ imbalance correction method and device, and a receiver; the method comprises the steps: carrying out the first IQ imbalance parameter estimation in a time domain according to a received first pilot signal during initial synchronization, and obtaining a first imbalance parameter; and during normal service receiving, carrying out first correction of IQ imbalance on the received signal in the time domain according to the first imbalance parameter. According to the invention, the IQ imbalance compensation of the receiver is carried out by combining the coarse correction and the fine correction, so that the receiving precision is improved, and no extra spectrum resource consumption is increased.

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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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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