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High Frequency Wireless Channel Estimation Method and System

A wireless channel and channel estimation technology, applied in the field of communication, can solve the problem of low channel estimation accuracy and achieve the effect of simplifying the complexity

Inactive Publication Date: 2020-02-14
BEIJING XINWEI TELECOM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a high-frequency wireless channel estimation method and system to solve the problem of low channel estimation accuracy in high-frequency and slow-moving scenarios

Method used

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  • High Frequency Wireless Channel Estimation Method and System
  • High Frequency Wireless Channel Estimation Method and System

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Experimental program
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Embodiment 1

[0015] figure 1 It is a flow chart of the high-frequency wireless channel estimation method provided by Embodiment 1 of the present invention. This embodiment is applicable to the case of estimating the channel vector of the wireless channel with a frequency between 6-100 GHz, and the method can be executed by a terminal, wherein , the terminal includes, but is not limited to: a mobile phone, or other electronic devices that use the above-mentioned high-frequency wireless channel for data transmission. Specifically include the following steps:

[0016] Step S110, based on the measurement of the received pilot signal, determine a measurement matrix for measuring a channel and a measurement result of the channel, and initialize the measurement result of the pilot signal as a residual.

[0017] Specifically, the base station periodically or aperiodically sends pilot signals for the terminal to measure channel quality. Here, when the terminal receives the pilot signal in the hig...

Embodiment 2

[0049] figure 2 It is a flow chart of the frequency wireless channel estimation method provided by Embodiment 2 of the present invention. This embodiment is based on the above embodiments, preferably before step S120, that is, there is no repetition in the measurement matrix using the current residual Before selecting the column vectors, it also includes: Step S111.

[0050] Step S111, determine whether it is the initial channel estimation, if yes, execute step S120, if not, then determine whether the systematic error of the channel satisfies the first condition based on the recorded channel estimation value, incremental matrix and sparse pattern index set, if yes , then execute step S150, if not, execute step S120 again.

[0051] Here, based on the recorded channel estimation value, incremental matrix and sparse pattern index set, the way to determine whether the systematic error of the channel satisfies the first condition is to use the least square method LS estimation fo...

Embodiment 3

[0097] Figure 4 A schematic structural diagram of a high-frequency wireless channel estimation system provided by Embodiment 3 of the present invention. This embodiment is applicable to the case where the channel vector of a wireless channel with a frequency between 6-100 GHz is estimated. The system is installed in a terminal, wherein the The above-mentioned terminals include but are not limited to: mobile phones, or other electronic devices that use the above-mentioned high-frequency wireless channels for data transmission. The system 1 specifically includes: a measurement unit 11 , a first column vector selection unit 12 , a first calculation and adjustment unit 13 , a first matching unit 14 , and a channel estimation unit 15 .

[0098] The measurement unit 11 is configured to determine a measurement matrix for measuring a channel and a measurement result of the channel based on the measurement of the received pilot signal, and initialize the measurement result of the pilo...

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Abstract

The invention discloses a high-frequency wireless channel estimation method and system. According to the method, the system determines a measurement matrix and a measurement result on the basis of measurement on a received pilot signal, and initializes the measurement result of the pilot signal into a residual error; the initialized residual error is used as a current residual error; by utilizing the current residual error, column vectors in the measurement matrix are selected from the measurement matrix without repetition; a channel estimated value is calculated by utilizing all column vectors selected currently and before and the measurement result, the residual error is regulated, and the regulated residual error is used as a current residual error; based on a matching result of the current residual error and a preset first condition, an increment matrix formed on the basis of each column vector selected currently and before and a sparse pattern index set formed by a position of each column vector in the increment matrix in the measurement matrix are determined, until the cycle is ended; and based on the obtained channel estimated value and the sparse pattern index set, a channel vector for demodulating a signal is constructed. The high-frequency wireless channel estimation method and system disclosed by the invention solve the problem of low channel estimation accuracy in a high-frequency slow-moving scene.

Description

technical field [0001] Embodiments of the present invention relate to communication technologies, and in particular to a method and system for estimating a high-frequency wireless channel. Background technique [0002] The new generation of mobile communication systems is facing the demands of higher transmission rate and lower transmission delay. High-frequency communication technology refers to the technology that uses frequency bands above 6 GHz for communication. The high-frequency communication technology report of the IMT2020 (5G) technology group pointed out that within the frequency range of 6-100GHz, there are up to 45GHz of idle spectrum resources, which can transmit services at a user rate of up to 10Gbps or higher to meet future communication needs. Typical high-band deployment scenarios are often indoor scenarios such as offices and conference rooms. In this scenario, the number of multipath channels is greatly reduced compared with wireless channels below 6 G...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L25/02H04L5/00
CPCH04L5/0048H04L25/024
Inventor 马大为孙鹏
Owner BEIJING XINWEI TELECOM TECH
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