WiFi 7 multi-link operation - RF coexistence within the device?

Multi-link operation runs two radios in one device that interfere with each other. How much self-interference did you measure, and did filtering, antenna isolation, or scheduling save you?

Wi-Fi 7 MLO puts two (or more) radios in one chassis; self-interference is expected, and scheduling often saves you more than another filter.

What usually shows up on the bench:
1. Conducted / near-field coupling between 2.4 / 5 / 6 GHz chains and their harmonics / spurs - isolation between antennas and clean front-end filtering both matter, but neither is infinite in a phone / CPE volume.
2. Desense: one link transmitting can raise the noise floor on the other; AGC and CCA behaviour then look like "MLO is slow" when it is really RX deafness.
3. Mitigations that work in practice: antenna isolation + notch / diplex where the aggressor is known, power/MCS backoff on the aggressor, and time-domain scheduling so the victim is not receiving in the worst TX windows.

Report isolation (dB) between chains, whether the pain is TX→RX desense or TX→TX spectral regrowth, and whether firmware scheduling recovered throughput. Share form factor (phone vs AP vs CPE) - that usually predicts whether you can afford isolation or must lean on schedule.

— rfforum 编辑部 / Editorial Team