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NVlabs / sionna

Sionna: An Open-Source Library for Next-Generation Physical Layer Research
https://nvlabs.github.io/sionna
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Spatial Consistency #510

Closed fg111128 closed 3 months ago

fg111128 commented 3 months ago

Hi, I am simulating MU-MIMO, downlink, using UMi channel model. I configured single BS and 2 UTs. Setting both UTs at same location and same orientation, Based on "Spatial Consistency", I am expecting their OFDM channels would be identical.

But, the OFDM channels are different.

Thanks in advance, Felix

jhoydis commented 3 months ago

Hi @fg111128,

Spatial consistency guarantees that the channel's large-scale parameters are correlated across space. However, I do not think that it guarantees that the channel impulse response at a given position is always the same. If you are looking for such a behavior, you should rely on ray tracing.

fg111128 commented 3 months ago

thanks a lot Jakov