Channel modeling method for multi-input multi-output wireless communication system

A wireless communication system and channel modeling technology, applied in the field of multiple-input multiple-output wireless communication systems, can solve the problem of high complexity of multiple-input multiple-output channel models

Inactive Publication Date: 2010-10-13
XI AN JIAOTONG UNIV
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Problems solved by technology

[0023] The present invention aims at the high complexity defect of the MIMO channel model based on the stochastic modeling method based on geometric statistics, and its purpose is to propose a low-complexity MIMO channel modeling method for the MIMO wireless communication system

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  • Channel modeling method for multi-input multi-output wireless communication system
  • Channel modeling method for multi-input multi-output wireless communication system
  • Channel modeling method for multi-input multi-output wireless communication system

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Embodiment Construction

[0100] refer to figure 1The shown channel model of the multiple-input multiple-output (MIMO) wireless communication system describes in detail the channel modeling method of the multiple-input multiple-output wireless communication system of the present invention.

[0101] 1) The channel model is figure 1 As shown, the MIMO system has a total of S*U channels, each channel has N multipaths, and each multipath has M subpaths. According to the given channel model parameters (delay spread, delay distribution factor, angle of arrival angle expansion, angle of departure angle expansion, angle distribution scale factor, Rice K factor) calculation and generation: path delay τ of N paths of the channel n , diameter power p n , diameter maximum power P max , the angle of arrival of the diameter radial departure angle φ n (The subscript n represents the nth path, n∈[1, 2, 3,..., N]);

[0102] 2) Simplified channel model:

[0103] It can be known from (1) that the complexity of ch...

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Abstract

The invention relates to a multi-input multi-output (MIMO) wireless communication system, disclosing a channel modeling method for the multi-input multi-output wireless communication system. The method comprises the following steps: first generating channel model parameters including path delay, path power, path arrival angle and path departure angle of the MIMO wireless communication system according to the simulation environment of the MIMO wireless communication system, then simplifying the channel model according to a principle of simplicity, and finally calculating the transmission coefficient of the channel of the MIMS wireless communication system. By using a method of self-adaptively reducing the multi-path number of the channel, the complexity of the channel model of the MIMO communication system is reduced, and compared with the channel model which is not simplified, the impact on the accuracy of the simplified channel model is very small.

Description

technical field [0001] The invention relates to a multiple-input multiple-output wireless communication system, in particular to a channel modeling method for a multiple-input multiple-output wireless communication system. Background technique [0002] In recent years, multiple-input multiple-output (MIMO) technology has received extensive attention and development. It is characterized by the ability to use multi-path transmission of wireless channels, develop channel space resources, establish space parallel transmission channels, and utilize the space characteristics of communication systems. Combining space-time joint processing technology to improve the capacity and reliability of the wireless system. The performance of various signal processing algorithms used in the MIMO system depends greatly on the characteristics of the MIMO channel, especially the correlation between the antennas. Therefore, it becomes very important to establish an effective MIMO channel model th...

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Application Information

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IPC IPC(8): H04B7/04H04L1/06
Inventor赵霞廖学文朱世华任品毅
OwnerXI AN JIAOTONG UNIV