Comment on Ifixit gives fairphone 5 a 10/10 on repairability and maintanence
foggenbooty@lemmy.world 9 months agoWi-Fi is a shared medium where airtime is split amongst multiple clients on a radio spectrum that is open for all the public to use… Wired gives each device dedicated bandwidth with no interference. Wireless gets better and better, but it can never, and will never, be faster than a dedicated cable.
BigDanishGuy@sh.itjust.works 9 months ago
None of that are physical limitations, it’s purely implementational. Legacy ethernet was half-duplex as well, before switching and dedicated pairs for tx/rx became the norm. And still handling the shared medium is done with CSMA-CA and not -CD, which was used for ethernet.
Copper is also susceptible to interference, both RFI and EMI. Sure you can mitigate the effect by shielding and having twisting the wire pairs with different amount of twists pr length. But in the end, copper is also susceptible to interference.
I’m not an RF engineer, and I don’t have an idea of what can be done to mitigate noise in wifi even further. But claiming that it’s an inherent physical limitation, that can’t be mitigated, that’s just defeatism. It’s about the implementation, not physical constraints.
foggenbooty@lemmy.world 9 months ago
It’s absolutely a physical limitation and to argue otherwise is a waste of time. You can use complex multiplexing algorithms to squeeze more out of a single wireless channel, but at the end of the day you’re sharing that airspace with anything from another WiFi signal to a microwave oven. To go faster with wired all you have to do is, like you said, add another pair.
RF and EMI can be sheilded like you said, or you can move to optical and then you’re literally transferring at the speed of light on a dedicated medium. You simply can’t do that with radio. It’s not physically possible unless there is some signaling technological breakthrough that we have not yet conceived.