IQ modulation communication system channel state information estimation method and device

A channel state information and communication system technology, which is applied in the field of channel state information estimation of IQ modulation communication systems, and can solve problems such as low operation efficiency and complex calculation.

Active Publication Date: 2021-03-30
BEIJING INST OF RADIO METROLOGY & MEASUREMENT
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  • Claims
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Problems solved by technology

[0003] The present invention provides a method and device for estimating channel state information in an IQ modulation communication system, which solves the problems of complex calculation and low calculation efficiency in existing methods and devices

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  • IQ modulation communication system channel state information estimation method and device
  • IQ modulation communication system channel state information estimation method and device
  • IQ modulation communication system channel state information estimation method and device

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Embodiment Construction

[0048] In order to make the objects, technical solutions, and advantages of the present invention, the technical solutions of the present invention will be described in conjunction with specific embodiments and appended claims. Obviously, the described embodiments are merely embodiments of the invention, not all of the embodiments. Based on the embodiments of the present invention, there are all other embodiments obtained without making creative labor without making creative labor premises.

[0049] The innovation point of the present invention is as follows: The present invention loads I and Q channels to the odd margin and even numbers of multiple sinusoidal signals, respectively, and can simultaneously implement the estimation of the I channel, Q road channel status information, and do not need to be adopted at the reception. The complex algorithm separates the IQ, Q road information, can reduce the complexity of the IQ modulation communication system channel status information...

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Abstract

The invention discloses an IQ modulation communication system channel state information estimation method and device, and solves the problems of complex calculation and low operation efficiency of anexisting method and device. The method comprises the steps of determining I-path and Q-path frequency components of a multi-sinusoidal signal according to a bandwidth and a channel state information frequency interval of a to-be-estimated IQ modulation communication system; correspondingly determining I-path and Q-path time domain waveforms of the multi-sinusoidal signal according to the I-path and Q-path frequency components, amplitude components and phase components of the multi-sinusoidal signal; performing digital-to-analog conversion on the I-path time domain waveform and the Q-path timedomain waveform of the multi-sinusoidal signal, correspondingly inputting the I-path time domain waveform and the Q-path time domain waveform into the I-path time domain waveform and the Q-path time domain waveform of the to-be-estimated IQ modulation communication system, and outputting a measurement signal after frequency mixing and combining processing; and performing sampling, IQ separation, time-frequency conversion and signal interception reconstruction on the measurement signal, and calculating to obtain an estimated value of the channel state information of the IQ modulation communication system to be estimated. The device uses the method. According to the invention, efficient channel state information estimation can be realized.

Description

Technical field [0001] The present invention relates to the field of channel state information estimation, and more particularly to an IQ modulation communication system channel state information estimation method and apparatus. Background technique [0002] As the high-speed development of communication technology, the rate and bandwidth of communication signals also grow, under broadband conditions, the communication system channel state is more deteriorated under narrow band conditions, and the estimation of communication status information is important for communication quality. . The frequency band utilization rate of IQ modulation is twice the direct modulation, with high order modulation, which can greatly increase the signal transmission rate, so the same extensive application is among high-speed broadband communication systems. The estimation method of the existing communication status information, each frequency of the estimated communication system performs signal gene...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B17/309
CPCH04B17/309
Inventor 姜河龚鹏伟谢文谌贝刘爽马红梅杨春涛
Owner BEIJING INST OF RADIO METROLOGY & MEASUREMENT
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