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Implementing TDD Resource Grid with AWGN channel module #73

Answered by jhoydis
neilb22 asked this question in Q&A
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Hi Neil,

The AWGN channel layer does not require knowledge of the ResourceGrid as it will simply add complex Gaussian noise to the elements of the input tensor (which can have arbitrary shape).

If you want to simulate a flat fading channel, you can use the RayleighBlockFading channel model together with the OFDMChannel layer.

Note that the Mapper maps a sequence of bits to constellation symbols, while the ResourceGridMapper maps a sequence of constellation symbols onto a time-frequency resource grid.

If you simulate an AWGN or flat fading channel, there is really no need to define a complex resource grid for TDD as it simply means that you have two orthogonal dimensions for transmissions.…

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