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Virtual-instrument-based receiver

A technology of virtual instruments and receivers, applied in the field of virtual instruments, can solve the problems of reducing the data transmission rate and the like

Inactive Publication Date: 2012-11-28
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, the data transfer rate at the physical layer is cut in half

Method used

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Experimental program
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Embodiment Construction

[0026] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0027] refer to figure 1 As shown, an 802.11p receiver based on a virtual instrument includes a receiver software module A and a receiver hardware module B, the receiver hardware module B is connected to the receiver software module A through a bus C, and the receiver The computer software module A includes a signal acquisition module 1, and the signal acquisition module 1 is connected with a signal processing module 2 and a general instrument bus driver 3.

[0028] Further, refer to image 3 As shown, the signal processing module 2 sequentially passes the signal of the signal acquisition module 1 through symbol synchronization 201, frequency offset correction 202, cyclic prefix removal 203, FFT 204, channel deviation correction 205, mediation 206, descrambling code 207, performance Verify modules such as 208.

[0029] Further, th...

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Abstract

The invention discloses a virtual-instrument-based receiver, which comprises a receiver software module and a receiver hardware module, wherein the receiver hardware module is connected with the receiver software module through a bus; and the receiver software module comprises a signal acquisition module which is connected with a signal processing module and a universal instrument bus driver. A virtual instrument technology is used for constructing an 11p physical layer receiver, and the technology is implemented dependent on a graphic programming language Labview and a peripheral component interconnect extensions for instrumentation (PXI) modular instrument. By the Labview, the radio frequency module software part and baseband signal processing module software part of the 11p physical layer receiver are quickly and efficiently implemented, and interaction with the hardware part of the PXI modular instrument is quickly realized. The characteristic of high accuracy of the PXI modular instrument provides powerful hardware support for the virtual-instrument-based receiver.

Description

technical field [0001] The invention relates to a virtual instrument technology, and specifically utilizes the virtual instrument technology to cooperate with a PXI modular instrument to realize the construction of an 802.11p physical layer receiver. Background technique [0002] 1. 802.11p technical background [0003] In recent years, the automotive network has attracted more and more attention. The wireless communication standard DSRC is used to realize short-distance communication services for roadside-to-car and car-to-car public safety and private event communications. The initial setting is to have a transmission speed of 6 Mb / s within a distance of 300 m. It has a transmission distance of 304.8m and a data rate of 6 Mb / s. From a technical point of view, it has made a number of improvements to IEEE 802.11 for special environments such as cars, such as: more advanced switching between hotspots, more support for mobile environments, enhanced security, enhanced identit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L27/26H04L25/02H04B1/06H04B1/00
Inventor 裴文江第伟王开孙庆庆詹金狮王晓姝朱光辉杨洋缪瑞华张毅峰
Owner SOUTHEAST UNIV