LTE Communication Toolbox, Generate Channel Model given Receiver Antenna Array structure

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Hussein Hammoud
Hussein Hammoud 2022-11-30
回答： Naren 2023-10-26
Hello,
I am trying to simulate an LTE channel and how different beamforming techniques can help with SNR gains on the Receiver side.
I have noticed in all the templates and example codes using the LTE toolbox, the channel initialization code allows to set the number of Rx antennas, but not the structure of the Rx antenna array, or antenna element separations, or any such details, such as the code below:
channel.DelayProfile = 'EVA';
channel.DopplerFreq = 70.0;
channel.NRxAnts = 2;
channel.MIMOCorrelation = 'Low';
channel.Seed = 1;
Is there a default setup that the code uses? Does it assume a ULA with lambda/2 separation for example?
I tried to look around for answers in different areas on the website + the community site without luck,
Any suggestions would be appreciated :)

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回答（1 个）

Naren
Naren 2023-10-26
Hello Hussein,
I understand that you are interested in simulating the LTE channel and exploring how different beamforming techniques can improve the Signal-to-Noise Ratio (SNR) on the Receiver side. You also want to know the default structure of the Receiver antenna array when the 'NRxAnts' parameter is given a specific value.
This is a correlation-based stochastic channel model, which does not specify explicitly geometrical aspects of the channel like the antenna element separation or the angles of arrival/departure.
Instead of directly controlling the antenna separation, the model lets you configure the antenna correlation (MIMOCorrelation), which depends on the antenna separation and other aspects of the channel.
Refer this documentation for further information on ‘ltefadingchannel’:
https://www.mathworks.com/help/lte/ref/ltefadingchannel.html
Regards, Naren

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