WLAN transceiver with carrier leakage correction and compensation functions

A carrier leakage and transceiver technology, which is applied to the transmitter/receiver in the shaping network, electrical components, transmission system, etc., can solve problems that affect the power accuracy of the transmitted signal, affect the EVM of the transmitted signal, and reduce the quality of the transmitted signal. Achieve the effect of wide calibration range and compensation range, low power consumption and low cost

Inactive Publication Date: 2014-02-12
INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
View PDF4 Cites 17 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Carrier leakage will affect the accuracy of the transmitted signal power. Excessive carrier leakage will affect the EVM of the transmitted signal, resulting in a decrease in the quality of the transmitted signal
[0012] In existing WLAN transceivers, the digital-to-analog converter ADC for data acquisition and the DAC for carrier compensation and I/Q mismatch compensation are usually used in the radio frequency part to re

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • WLAN transceiver with carrier leakage correction and compensation functions
  • WLAN transceiver with carrier leakage correction and compensation functions
  • WLAN transceiver with carrier leakage correction and compensation functions

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0031] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be noted that, in the drawings or descriptions of the specification, similar or identical parts all use the same figure numbers. Implementations not shown or described in the accompanying drawings are forms known to those of ordinary skill in the art. Additionally, while illustrations of parameters including particular values ​​may be provided herein, it should be understood that the parameters need not be exactly equal to the corresponding values, but rather may approximate the corresponding values ​​within acceptable error margins or design constraints.

[0032] The present invention does not need to introduce an ADC for data acquisition and a DAC for carrier leakage compensation and I / Q mismatch compensation in...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention provides a WLAN transceiver with the carrier leakage correction and compensation functions. An ADC for collecting data or a DAC for carrier leakage compensation and I/Q mismatch compensation does not need to be introduced into a radio frequency part of the WLAN transceiver, only a simple correction path needs to the designed, the correction and compensation are achieved through a digital base band, and very high precision can be achieved only by carrying out a few iterations.

Description

technical field [0001] The invention relates to the technical field of broadband wireless communication, in particular to a WLAN transceiver with carrier leakage calibration and compensation functions. Background technique [0002] The wireless communication industry has grown rapidly in the past ten years, especially the wireless local area network has been widely used in many occasions for wireless transmission, such as offices, hospitals, home networks, and the Internet of Things. Low-cost solutions have promoted the development of wireless communication technology. One of the low-cost implementation methods is to save expensive external devices and achieve a high degree of integration. Based on this consideration, WLAN transceivers basically adopt a direct frequency conversion structure and an orthogonal modulation method. [0003] figure 1 It is a schematic diagram of a basic structure of a WLAN transceiver. Please refer to figure 1 , the WLAN transceiver includes: ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): H04B1/40H04W84/12H04L25/03H04B1/44
Inventor 周立国彭锦袁芳颜峻鉴海防尧横石寅
Owner INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap