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Wireless communication channel estimation method/system, computer storage medium and device

A wireless communication and channel technology, applied in baseband systems, transmission systems, digital transmission systems, etc., to achieve the effect of multi-channel diversity gain

Active Publication Date: 2021-02-12
SHANGHAI ADVANCED RES INST CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] In view of the shortcomings of the prior art described above, the purpose of the present invention is to provide a wireless communication channel estimation method / system, computer storage medium and equipment, which are used to solve the need to increase the estimation performance in the prior art by additionally adding precoding Issues such as transmitter processing, additional introduction of oversampling, multi-antenna and other receiver processing are premised on the problem

Method used

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  • Wireless communication channel estimation method/system, computer storage medium and device
  • Wireless communication channel estimation method/system, computer storage medium and device
  • Wireless communication channel estimation method/system, computer storage medium and device

Examples

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Embodiment 1

[0041] This embodiment provides a method for estimating a wireless communication channel, including:

[0042] The channel estimation and / or noise variance estimation are performed on the wireless communication channel by using the cyclostationary characteristics of the orthogonal frequency division multiplexing transmitted signal and the cyclostationary characteristics of the channel diffusion.

[0043] The method for estimating a wireless communication channel provided by this embodiment will be described in detail below with reference to illustrations. In this embodiment, the cyclostationary feature of the OFDM transmit signal refers to a feature that the statistical quantity of the OFDM transmit signal exhibits periodic changes over time. The cyclostationary feature of the OFDM signal is introduced by the inherent periodicity of the OFDM signal. For example, the CP insertion operation will make the OFDM transmitted signal show a cyclostationary feature. The cyclostationary...

Embodiment 2

[0089] This embodiment provides a system for estimating a wireless communication channel, including:

[0090] The estimation module is used for performing channel estimation and / or noise variance estimation on the wireless communication channel by using the cyclostationary characteristics of the OFDM transmitted signal and the cyclostationary characteristics of the channel diffusion.

[0091] The system for estimating a wireless communication channel provided by this embodiment will be described in detail below with reference to illustrations. It should be noted that it should be understood that the division of each module of the above device is only a division of logical functions, and may be fully or partially integrated into one physical entity or physically separated during actual implementation. And these modules can all be implemented in the form of calling software through processing elements; they can also be implemented in the form of hardware; some modules can also b...

Embodiment 3

[0101] This embodiment provides a kind of equipment, and this equipment comprises: processor, memory, transceiver, communication interface and system bus; Memory and communication interface are connected with processor and transceiver through system bus and complete mutual communication, and memory is used for The computer program is stored, the communication interface is used to communicate with other devices, the processor and the transceiver are used to run the computer program, so that the device executes the steps of the method for estimating the wireless communication channel above.

[0102] The system bus mentioned above may be a Peripheral Component Interconnect (PCI for short) bus or an Extended Industry Standard Architecture (EISA for short) bus or the like. The system bus can be divided into address bus, data bus, control bus and so on. For ease of representation, only one thick line is used in the figure, but it does not mean that there is only one bus or one type ...

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Abstract

The present invention provides a wireless communication channel estimation method / system, computer storage medium and equipment. The wireless communication channel estimation method includes: using the cyclostationary characteristics of the orthogonal frequency division multiplexing transmitted signal and the cyclostationary characteristics of the channel diffusion, to The wireless communication channel performs channel estimation and / or noise variance estimation. The present invention provides an effective channel estimation and noise estimation method for a single-antenna OFDM system by using the inherent cyclostationary characteristics introduced by CP and the corresponding cyclostationary characteristics of channel diffusion without additional processing at the transmitting end and receiving end. Variance estimation method, and this method can be extended to multi-antenna systems to obtain more channel diversity gains.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, and relates to an estimation method and system, in particular to a wireless communication channel estimation method / system, computer storage medium and equipment. Background technique [0002] Orthogonal frequency division multiplexing (OFDM) technology has been widely used in many communication systems due to its advantages of low transceiver complexity, high spectral efficiency and anti-multipath fading, such as European digital television broadcasting (DVB), the first Fourth / fifth generation mobile communication system (4G / 5G), wireless local area network (WLAN). A main feature of the OFDM system is that a cyclic prefix (CP) is added before each OFDM symbol to counteract inter-symbol interference (ISI) and inter-channel interference (ICI). In the actual OFDM system, since the received signal will be affected by unknown channel fading, channel estimation is a key technology to e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L25/02
CPCH04L25/0212H04L25/0222H04B17/391
Inventor 田金凤卞鑫王芳李明齐
Owner SHANGHAI ADVANCED RES INST CHINESE ACADEMY OF SCI
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