Re:Turn a WiFi 7 Router into a 320Msps Software Defined Radi...
by h0m3us3r on Monday October 12, 2026 @09:21PM
(#50065369)
The "network coprocessors" are a bit lame imo. I initially tried to use them for packing, but they turned out to be very memory/cache bandwidth limited. They are also standard risk-v pretty much. I did run custom code on them though (and the Mediatek's "dsp" cores that are a bit more interesting extensions-wise, but are even more memory bw starved). There should be enough left in the tree to get one going pretty fast if one so wishes to play with those cores.
Not the point but the Airhona could here is really neat. AN7581 with typical quad Cortex-A53 but then 8x RISC-V network coprocessors. Good luck figuring out how to use that though, whew! (Go Astra go.) https://www.airoha.com/products/p/NpfqGLnZiZuYUZ6N
I've been thinking how beautiful and awesome it is that SDR finally has a real jump. The QuadRF using the rpi's mipi connector was such a glorious hack! Custom ADC from parts. 80MSps. https://www.crowdsupply.com/scale-rf/quadrf
And man what a huge flying leap forward here. 320MSps! Much deeper 14b IQ precision vs 8b. The totally custom mediatek radio firmware is incredible. Such incredible possibility. Maybe someday the mimo can be useful for some of the same neat AoE / beam forming capabilities?