Several Digital Subscriber Line Channel Models Suitable for G.fast Frequency
The channel model of Digital Subscriber Line is an important issue for the evaluation of subscriber line quality,access rate and communication system design.It also has important theoretical significance in the standardization works.We summarize several types of digital twisted pair channel models suitable for G.fast frequency band,namely the BT model estab-lished using the primary parameters RLGC of the transmission line,the KM models established using characteristic impedance and propagation coefficient,and the KPN model established using the series impedance and parallel admittance of the transmission secondary parameters.Detailed analysis and mathematical derivation processes are provided for each channel model.
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