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A signal analyzer ofdm signal demodulation method

A signal analyzer and signal demodulation technology, applied in the field of signal analyzer OFDM signal demodulation, can solve the problems of unsuitable signal analyzer and high measurement accuracy requirements.

Active Publication Date: 2020-06-09
THE 41ST INST OF CHINA ELECTRONICS TECH GRP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Different from the receiver, the main purpose of the signal analyzer is to test and analyze the signal, and realize the test of the device under test through the test and analysis of the signal. Suitable for Signal Analyzers

Method used

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  • A signal analyzer ofdm signal demodulation method
  • A signal analyzer ofdm signal demodulation method
  • A signal analyzer ofdm signal demodulation method

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Embodiment Construction

[0090] The basic idea of ​​the present invention is: for the OFDM standard signal in the WLAN application, based on the signal analyzer platform, a pure software mode is used to design a complete demodulation test and analysis scheme of OFDM signal, so that the signal analyzer has the OFDM signal demodulation test function, It meets the modulation quality test requirements of WLAN transmitting equipment, and also provides a general demodulation test method for OFDM signal testing in wireless communication standards.

[0091] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

[0092] like image 3 Shown, a kind of signal analyzer OFDM signal demodulation method comprises the steps:

[0093] s1. Pulse search

[0094] In a WLAN application, it is first judged whether the OFDM signal is in the form of a pulse. For an OFDM signal in the form of a pulse, a pulse capture operation needs to be performed befor...

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Abstract

The invention discloses a signal analyzer OFDM signal demodulation method, the method is based on the signal analyzer platform, adopts pure software to design a complete demodulation test and analysis scheme of OFDM signal, so that the signal analyzer has the function of OFDM signal demodulation test , to meet the modulation quality test requirements of OFDM signals in WLAN transmitting equipment, and also provide general demodulation test methods for OFDM signal tests in wireless communication standards. The method mainly includes the steps of pulse search, sampling rate conversion, frame synchronization, carrier synchronization, OFDM symbol demodulation, channel estimation and equalization, modulation parameter analysis, pilot frequency tracking and decoding, and parameter output. Since the present invention is realized by pure software, the cost is small and the portability is good; at the same time, the pilot frequency tracking technology is adopted to realize high-precision demodulation and parameter calculation, which can meet the OFDM signal demodulation test requirements of high-precision measuring instruments.

Description

technical field [0001] The invention relates to a signal analyzer OFDM signal demodulation method. Background technique [0002] With the rapid development of wireless communication technology, wireless local area network (WLAN) and its products are widely used, such as short-distance wireless communication, industrial control, smart home and so on. A wide range of applications and numerous unlimited devices hide a huge market testing demand. At the same time, as an important test instrument in the field of electronic communication, the signal analyzer has developed from a basic spectrum test to a multi-functional instrument integrating spectrum power test, equipment fault diagnosis, complex modulation signal analysis and other functions. [0003] The important signal transmission technology adopted by the current WLAN equipment is Orthogonal Frequency Division Multiplexing (OFDM) technology, so if the signal analyzer is to test the WLAN equipment, it must be capable of tes...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L27/26
CPCH04L27/2649H04L27/2656H04L27/2657
Inventor 韩翔王峰周钦山
Owner THE 41ST INST OF CHINA ELECTRONICS TECH GRP
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