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LTE (long term evolution) terminal wireless positioning system based on quick time-delay parameter search

A wireless positioning system and time-delay technology, applied in the field of communication, can solve the problems of failing to give a clear suppression method, emphasizing on theoretical analysis, unfavorable engineering implementation, etc., to achieve enhanced ability to resist NLOS interference, less iterations, and adapt to the environment powerful effect

Inactive Publication Date: 2011-07-20
UNIV OF ELECTRONIC SCI & TECH OF CHINA
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Problems solved by technology

However, this method focuses on theoretical analysis, the derivation process is very complicated, and the amount of calculation is large, which is not conducive to engineering implementation. For the NLOS problem in the actual environment, it has not given a clear suppression method

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  • LTE (long term evolution) terminal wireless positioning system based on quick time-delay parameter search
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  • LTE (long term evolution) terminal wireless positioning system based on quick time-delay parameter search

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Embodiment Construction

[0029] The above content of the invention of the present invention will be further described in detail below in conjunction with specific embodiments.

[0030] However, it should not be construed that the scope of the above-mentioned subject matter of the present invention is limited to the following examples. Without departing from the above-mentioned technical idea of ​​the present invention, various replacements and changes made according to common technical knowledge and customary means in this field shall be included in the scope of the present invention.

[0031] See figure 1 , figure 2 , image 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 10 As shown, a wireless positioning system for LTE terminals based on fast delay parameter search includes a system radio frequency module 201, a frequency domain correlator 202, a judge 203, a data adjuster 204, a memory 205, a time domain correlator 206, and NLOS suppression device 20...

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Abstract

The invention discloses an LTE (long term evolution) terminal wireless positioning system based on quick time-delay parameter search. In the invention, the positional parameter solution process comprises the following steps: performing frequency domain correlation operation between a received signal and a local signal in a frequency domain correlator (202); judging related peak values in a judging device (203), and sending feedback information to a data adjuster (204); obtaining the maximum peak value through judgment after sliding window transformation, and recording the position in which the peak value is located; reading data in a memory (205), sending the data to a time domain correlator (206) for time domain correlation operation so as to obtain the maximum related peak value, and recording a time delay position; suppressing NLOS influence of the signal by an NLOS (non-line-of-sight) suppressor (207); and finally calculating a target position in a calculator (208). The LTE terminal wireless positioning system is applicable to an LTE communication system, and has good application value in different noise interference environments; and relative to the traditional engineering system, the system has the advantages of fast positioning speed and high positioning precision, thus having wide engineering realization significance.

Description

technical field [0001] The invention belongs to the technical field of communication, such as mobile communication and wireless communication, and particularly relates to a fast delay-based method for estimating the target position of a mobile station in the field of "evolved 3G" wireless communication system, LTE wireless cellular communication, wireless local area network and other mobile communication fields. Parameter search for LTE terminal wireless positioning system. Background technique [0002] LTE (Long Term Evolution, long-term evolution, commonly known as 3.9G, with a data download capability of 100Mbps, is regarded as the mainstream technology for the evolution from 3G to 4G), LTE terminal wireless positioning mainly refers to the solution sent by the base station The LTE downlink signal is used to obtain relevant positioning parameters, and then determine the position coordinates of the mobile station. Due to the uncertainty of the wireless channel, the wirele...

Claims

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Application Information

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IPC IPC(8): H04W64/00H04L27/26
Inventor 陈健胡剑浩卓永宁凌翔
Owner UNIV OF ELECTRONIC SCI & TECH OF CHINA
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