Description

Each of the four twisted pairs in copper-based Ethernet cable transmits a balanced signal, so as to reduce the crosstalk leakage into other pairs. This paper investigates the scenario of unbalanced transmission, where each wire is individually excited, with the metal shield as the common ground. In this case, the number of transmission channels is doubled to eight channels, with a trade-off of higher crosstalk. However, with advanced transmission techniques, the unbalanced transmission mode has a great potential for better data rate performance. This study presents and analyzes the simulated unbalanced transmission channel model.