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A wireless channel modeling method and device

A wireless channel and modeling method technology, applied in the field of communication, can solve the problems of not being able to provide sufficient guarantee for the performance research of multi-antenna systems, the accuracy is not high, and the communication performance of antenna systems cannot be improved.

Active Publication Date: 2017-07-28
HUAWEI TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the modeling of dual-polarization MIMO channels is based on the modeling method of traditional MIMO channels. For example, the channel characteristic parameters of dual-polarization MIMO systems are characterized by introducing parameters such as cross-polarization discrimination, and the cross-polarization The discrimination is assumed to be a constant. However, in practical applications, the cross-polarization discrimination may have Markov characteristics and change with time. Therefore, the existing dual-polarization MIMO The channel modeling method has the problem of low accuracy, which cannot provide sufficient guarantee for the performance research of the multi-antenna system, and thus cannot improve the communication performance of the antenna system

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  • A wireless channel modeling method and device
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  • A wireless channel modeling method and device

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Embodiment 1

[0092] figure 1 A wireless channel modeling method provided by an embodiment of the present invention. The method as figure 1 As shown, the following steps may be included:

[0093] 101: Obtain the joint probability density function of the signal-to-noise ratio of the received signal passing through the dual-polarization MIMO channel, the joint probability density function of the random phase, and the joint probability density function of the polarization deflection angle at adjacent time intervals;

[0094] Preferably, before step 101, the method also includes:

[0095] Collect the data sample set of the signal-to-noise ratio of the received signal through the dual-polarization MIMO channel {γ k}, random phase data sample set {θ k}, data sample set of polarization deflection angle

[0096] For example, transmitting over a dual-polarized MIMO channel with a specified power P k training signal, it can be seen that the instantaneous power of the training signal received ...

Embodiment 2

[0159] Figure 5 A wireless channel modeling device 50 provided for an embodiment of the present invention, such as Figure 5 shown, including:

[0160] Acquisition module 501: used to obtain the joint probability density function of the signal-to-noise ratio of the received signal of the dual-polarization MIMO channel, the joint probability density function of the random phase, and the joint probability density function of the polarization deflection angle at adjacent time intervals;

[0161] Preferably, the obtaining module 501 is also used for:

[0162] Collect the data sample set of the signal-to-noise ratio of the received signal through the dual-polarization MIMO channel {γ k}, random phase data sample set {θ k}, data sample set of polarization deflection angle

[0163] For example, transmitting over a dual-polarized MIMO channel with a specified power P k training signal, it can be seen that the instantaneous power of the training signal received at the receiving...

Embodiment 3

[0226] see Figure 6 , is another wireless channel modeling device 60 provided by the embodiment of the present invention, such as Figure 6 As shown, the channel modeling device 60 may include: a processor 601, a memory 602, a communication unit 603, and at least one communication bus 604, which are used to realize the connection and mutual communication between these devices;

[0227] The processor 601 may be a central processing unit (English: central processing unit, CPU for short);

[0228] The memory 602 may be a volatile memory (English: volatile memory), such as a random access memory (English: random-access memory, abbreviation: RAM); or a non-volatile memory (English: non-volatile memory), such as only Read memory (English: read-only memory, abbreviation: ROM), flash memory (English: flashmemory), hard disk (English: hard disk drive, abbreviation: HDD) or solid-state drive (English: solid-state drive, abbreviation: SSD ); or a combination of the above types of memo...

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Abstract

The invention provides a wireless channel modeling method and device. The wireless channel modeling method and device can improve the accuracy of dual-polarized MIMO (multiple input multiple output) channel modelling and meanwhile enhance the communication performance of a multi-antenna system. The method comprises, at neighboring time intervals, obtaining the joint probability density function of the signal-to-noise ratio of receiving signals passing through a dual-polarized MIMO channel, the joint probability density function of a random phase and the joint probability density function of a polarization angle; according to every joint probability density function above and based on the corresponding Markov chain principles, computing the amplitude, the random phase and the polarization angle of the receiving signals in every moment; according to the amplitude, the random phase and the polarization angle of the receiving signals in the same moment, generating the fading coefficient of a co-polarized link and the fading coefficient of a cross-polarized link.

Description

technical field [0001] The invention relates to the communication field, in particular to a wireless channel modeling method and equipment. Background technique [0002] With the development of Multiple Input Multiple Output (MIMO) antenna technology, the emergence of dual-polarized MIMO antennas has greatly improved the communication performance of multi-antenna systems. Modeling and simulation can help system designers analyze and improve the communication performance of wireless communication systems. Therefore, in order to better improve the communication performance of dual-polarization MIMO systems, it is necessary to model dual-polarization MIMO channels. [0003] At present, the modeling of dual-polarization MIMO channels is based on the modeling method of traditional MIMO channels. For example, the channel characteristic parameters of dual-polarization MIMO systems are characterized by introducing parameters such as cross-polarization discrimination, and the cross-p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B17/391
Inventor 刘云杨光周亮
Owner HUAWEI TECH CO LTD