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luigifcruz / CyberEther

Multi-platform GPU-accelerated interface for compute-intensive pipelines. Radio, the final frontier.
MIT License
409 stars 14 forks source link

Multichannel source support #80

Open vd2org opened 4 months ago

vd2org commented 4 months ago

Hi! We have hardware with both 2 and 8 channels. Currently, the SOA0 block supports only a single channel.

Are you planning to support more channels ?

P.S.: Thanks for your incredible work! CE is amazing!

BTW: This is our device: https://www.crowdsupply.com/wavelet-lab/xmass-sdr

luigifcruz commented 4 months ago

Hey!

Are the sample rates of every channel the same?

I have a solution to this use case in mind. But it would only work if the sample rate of every channel is the same.

vd2org commented 4 months ago

Yes, at this time all boards working on the same sample rate and the same frequency. Some other parameters(like gain) might be different but, this is not necessary at this time.

luigifcruz commented 4 months ago

Nice! I think my idea should work then.

In short, the idea is to modify the Soapy module to create an array with an extra dimension for the SDR channel. For example, the single channel module creates a tensor with shape [8, 8192]. With the first dimension being the batch size and the second the number of elements. When operating with multiple streams, the generated tensor would be [2, 8, 8192]. The tensor could be broken down externally with a splice block to be used however you want.

I should implement this feature at some point depending on my free time. But you are welcome to take a crack at it. I don't expect it to be very difficult to implement.