Old TV signal hit village broadband for 18 months(bbc.co.uk)
bbc.co.uk
Old TV signal hit village broadband for 18 months
https://www.bbc.co.uk/news/uk-wales-54239180
4 comments
More here:
https://news.ycombinator.com/item?id=24551808
DSL ought to be resistant to most kinds of noise. In most cases, single frequency noise results in a tiny reduction in bandwidth as that single frequency bin can't be used.
It looks like in this case, a design deficiency in DSL contributed to the issue. Specifically, DSL assumes the amount of SNR at each frequency stays constant. A better design would adjust the number of bits and the power in each frequency bin to handle noise sources changing without requiring a full disconnect and resync which takes a few minutes and leaves the customer without service.
It looks like in this case, a design deficiency in DSL contributed to the issue. Specifically, DSL assumes the amount of SNR at each frequency stays constant. A better design would adjust the number of bits and the power in each frequency bin to handle noise sources changing without requiring a full disconnect and resync which takes a few minutes and leaves the customer without service.