Also spectrum reuse. With the narrow beam and O2 absorption, you can have a lot of 60 GHz links in an area, all using the same frequencies. But that argument is lost on the WiFi folks. And apparently the FCC folks, who are enamored with shared use but not so much with only pointing your RF where it is needed.
From: Adam Moffett Sent: Tuesday, February 17, 2015 9:23 AM To: [email protected] Subject: Re: [AFMUG] curious, all the spectrums throughput Well it still needs a few constraints.... At a range of 3 feet I bet we can do better than 12 bits/hz and use 100ghz. I guess i needed to define better but the gist is of the usable spectrum probably less than 500gbps? On Tue, Feb 17, 2015 at 8:46 AM, Ken Hohhof <[email protected]> wrote: What about Li-Fi? (it has to work, it’s from a TED talk) From: Chuck McCown Sent: Tuesday, February 17, 2015 8:23 AM To: [email protected] Subject: Re: [AFMUG] curious, all the spectrums throughput At a distance of 10 miles during a rain storm? From: Jaime Solorza Sent: Monday, February 16, 2015 6:37 PM To: Animal Farm Subject: Re: [AFMUG] curious, all the spectrums throughput So the 31ghz and 38ghz links I installed many years ago never passed data and phone calls? I knew I was kidding myself. Jaime Solorza On Feb 16, 2015 4:45 PM, "Chuck McCown" <[email protected]> wrote: The entire radio spectrum is infinite in theory as all light, xrays etc are all electromagnetic waves. The “usable” “RF” spectrum depends on range and rainfall and other factors. While some will say that 60 GHz is usable and THz frequencies are usable and free space optics in IR are usable I would limit the answer to 24 GHz. So 24 x 12 bits per hz =288 Gbps. From: That One Guy Sent: Monday, February 16, 2015 4:19 PM To: [email protected] Subject: [AFMUG] curious, all the spectrums throughput Theoretically, based on current bits/hz maximums, and assuming there was a radio capable, and an antenna capable, with no other limitations. What is the maximum throughput of the entire Radio spectrum not going too far into details like processing overhead or any of that. -- All parts should go together without forcing. You must remember that the parts you are reassembling were disassembled by you. Therefore, if you can't get them together again, there must be a reason. By all means, do not use a hammer. -- IBM maintenance manual, 1925 -- All parts should go together without forcing. You must remember that the parts you are reassembling were disassembled by you. Therefore, if you can't get them together again, there must be a reason. By all means, do not use a hammer. -- IBM maintenance manual, 1925
