ocr: IOMEDBICHNELSEUTUNINE Bits per Signal-to Bits per channel noise ratio channel Frequency Froquency Frequency Figure 2. Common types of noise on 2 communications channel are fre- quency-dependent, affecting only part of De relevant spectrum. Because ADSL divides the channel into manly individual 4k1iz bands and 5eS each one to itsj fuicapacity, it akes eficient Lse: ofthe whole channel.
