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Wireless-signal Receiver And Signal-processing Device

A wireless communication device, wireless signal technology, applied in receiver monitoring, transmission monitoring, electrical components and other directions, can solve problems such as being unsuitable for analyzing communication conditions

Active Publication Date: 2013-05-08
HITACHI LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, the method disclosed in Patent Document 1 is not suitable for applications that need to analyze communication conditions based on information such as the presence or absence of interference signals for wireless signals, the degree of amplitude attenuation, and the degree of phase distortion.

Method used

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  • Wireless-signal Receiver And Signal-processing Device
  • Wireless-signal Receiver And Signal-processing Device
  • Wireless-signal Receiver And Signal-processing Device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] [Device configuration]

[0049] figure 1 An example of the overall configuration of the wireless communication device 100 according to this embodiment is shown. Wireless communication devices include not only so-called terminal devices but also relay station devices or base station devices. In addition, the radio communication device in this specification also includes a measurement device used for inspection or analysis. In addition, in the present embodiment, a radio communication device 100 capable of selectively recording an arbitrary radio signal satisfying a condition arbitrarily input by the user will be described.

[0050] figure 1 The wireless communication device 100 shown is composed of an antenna 101, a high-frequency processing unit 102, an AD conversion unit 103, a signal detection unit 104, a reception processing unit 105, a data determination unit 106, a reception buffer 107, a signal determination unit 108, and a signal recording unit. 109. A settin...

Embodiment 2

[0071] [device configuration]

[0072] figure 2 An example of a more detailed functional configuration of the wireless communication device described in Embodiment 1 is shown. figure 2 The wireless communication device shown is composed of an antenna 101, a high-frequency processing unit 102, an AD conversion unit 103, a power detection unit 201, a frequency detection unit 202, a correlation detection unit 203, a synchronization processing unit 204, an equalization processing unit 205, and a demodulation processing unit. 206 , decoding processing unit 207 , correct / wrong determination unit 208 , characteristic determination unit 209 , receiving buffer 107 , signal determination unit 210 , signal recording unit 211 , setting condition input unit 110 , and signal output unit 111 constitute.

[0073] The power detection unit 201 is a circuit that receives a modulated signal in digital signal format from the AD conversion unit 103 and detects an increase or decrease in the powe...

Embodiment 3

[0133] In this embodiment, on the premise of the configuration of the wireless communication device 100 described in the second embodiment, the system configuration and processing operations of the wireless communication device when specific setting conditions are given will be described.

[0134] Figure 19 It is the setting condition (recording condition) of the received wireless signal which is selectively recorded / saved in this embodiment. exist Figure 19 In the shown setting conditions (recording conditions), the power detection control is enabled (ON), and the power threshold is set to -80 dBm. In addition, the frequency detection control is enabled (ON), the center frequency of the frequency to be detected is set to 2450 MHz, and the bandwidth is set to 5 MHz. In addition, the correlation detection is controlled to be effective (ON), and the correlation mode is set to autocorrelation. Also, set the synchronous processing to invalid (OFF). In addition, equalization ...

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Abstract

The present invention provides a system for recording only a received wireless signal conforming to given recording conditions, and discarding received wireless signals that do not conform to the recording conditions. The present invention provides a wireless communications apparatus having: (a) a signal detector for detecting a characteristic amount of a received wireless signal; (b) a reception processor for inputting and demodulating a reception wireless signal before it is input to the signal detector, or a reception wireless signal output from the signal detector; (c) a data-assessment unit for assessing the accuracy and / or the characteristics of a received wireless signal after it is demodulated by the reception processor; (d) a setting-condition input unit for inputting recording conditions of a received wireless signal; (e) a signal-assessment unit for inputting a feedback signal from the signal detector, the reception processor, or the data-assessment unit, using at least part of the feedback signal to assess whether the received wireless signal conforms to the recording conditions, and on the basis of the assessment results, controlling the recording to a signal-recording unit of the received wireless signal before signal processing.

Description

technical field [0001] The invention relates to a wireless signal receiving device for receiving wireless signals and a signal processing device thereof. Background technique [0002] Patent Document 1 is one of the documents describing a technique for estimating the reception status of radio signals with high accuracy. Patent Document 1 describes a reception system that improves the estimation accuracy by estimating reception conditions using baseband signals obtained during reception processing (specifically, baseband signals after equalization processing and before decoding). device. [0003] Patent Document 1: Japanese Patent Laid-Open No. 2010-245817 [0004] The receiving device described in Patent Document 1 analyzes baseband signals after equalization but before decoding, and selectively acquires only baseband signals satisfying recording conditions. However, if equalization processing is performed, information such as amplitude attenuation and phase distortion wi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B1/16
CPCH04B1/16H04B17/00H04B17/0042H04B17/0067H04B1/1027H04B17/24H04B17/309
Inventor 山崎良太
Owner HITACHI LTD
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