Create Set of High and LOW Correlation for Rayleigh fading channels

Hello everyone,

I am working on simulating Rayleigh fading channels and would like to generate two sets of Rayleigh fading channels with different correlation characteristics.

1. High Correlation: I want to create two Rayleigh fading channels that have a high correlation. What would be the best approach to achieve this in MATLAB?
2. Low Correlation: Similarly, I would like to create two Rayleigh fading channels that have a low correlation. What steps should I follow to generate these channels with low correlation? is there any command in MATLAB for my request?

Thank you!

Answer 1

[Sumukh]

Hi @ali,

The comm.MIMOChannel object can be used to represent a multi-path fading channel with Rayleigh fading distribution. This can be used to represent Rayleigh channels with different correlation characteristics. The object has properties to specify the correlation matrix for the TX and RX links of the channel, as follows:

• SpatialCorrelationSpecification - To specify the spacial correlation type for the TX and RX channels
• TransmitCorrelationMatrix - To specify the correlation for the TX
• ReceiveCorrelationMatrix - To specify the correlation for the RX
• SpacialCorrelationMatrix - To specify a combined correlation matrix for both TX and RX

Kindly refer to the following documentation to know more about how to use this object; you can also refer to the examples provided:

https://www.mathworks.com/help/comm/ref/comm.mimochannel-system-object.html

I hope this answers your query.