A Channel Modeling Method for Multiple-Input Multiple-Output System
A modeling method and multi-output technology, applied in diversity/multi-antenna systems, space transmit diversity, prevention/detection of errors through diversity reception, etc., can solve problems such as different modeling complexity
Active Publication Date: 2016-03-09
XIAMEN UNIV +1
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Another difficulty in modeling polarized channels is how to choose the coordinate system (established based on the propagation environment, based on the transmitting antenna array, and based on the receiving antenna array). Different coordinate systems will lead to different The modeling complexity of
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[0025] The following embodiments will further illustrate the present invention in conjunction with the accompanying drawings.
[0026] (1) The schematic diagram of the channel modeling method is as follows: figure 1 As shown, the three-dimensional space coordinate system is established with the propagation environment as the base point. The elevation angle is not drawn in the figure. The influence of the transmission medium on the beam includes amplitude fading, phase shift, direction change, and time delay. In general, the recommendations for beam direction change The mode needs to know the joint statistical characteristics of the angle of arrival (AOA) and the angle of departure (AOD), such as the joint power spectral density of AOA and AOD. This information often needs to be obtained through two-way measurement of the channel, which is very complicated, but it is transmitted indoors. In the environment, there are a large number of scatterers. At this time, AOA and AOD are i...
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The invention discloses a modeling method for a multi-input multi-output system channel and relates to wireless communication. A base station end and a mobile terminal both respectively adopt a horizontal-vertical polarized dual-polarized antenna array, under the indoor environment, a large number of scattering bodies exist, the polarized antenna can be better opreated, and under the indoor environment, the features such as angular domain of the base station end and the mobile terminal are separated, and the features of the base station end and the mobile terminal are respectively captured by combining the advantages of disadvantages of different modeling technologies and using different modeling technologies. The waveform superimposition method is adopted in the mobile terminal to capture the spatial-temporal feature of the mobile terminal, the relevant matrix method is adopted in the base station end to capture the spatial feature of the base station end, and then the spatial-temporal feature and the temporal feature are coupled, a channel matrix is deduced, and the indoor system channel modeling method based on the combination of relevant matrix and waveform superimposition realizes the compromise of complexity and accuracy.
Description
technical field [0001] The invention relates to the field of wireless communication, in particular to a modeling method for channels of a multiple-input multiple-output system. Background technique [0002] With the development of mobile communication services, people transmit a large amount of voice and data in places such as commercial buildings, supermarkets or conference halls, so indoor communication quality has received more and more attention. The multiple-input multiple-output (MIMO) communication system uses multiple antennas at the base station and mobile terminal of the communication system at the same time, making full use of the spatial freedom of the wireless multipath channel to improve channel capacity and transmission rate, at the cost of increasing the complexity of the system. Higher spectrum utilization is a powerful solution to meet growing capacity demands in rich multipath environments. [0003] Due to the development of the spatial dimension, MIMO te...
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IPC IPC(8): H04L1/06H04B7/04
Inventor 赵毅峰张长征黄联芬张远见
Owner XIAMEN UNIV