Abstract
A comparative analysis of MIMO communications based on physical measurements of balanced and unbalanced transmission line channels is presented. Specifically, the effect of imperfect knowledge of the channel is considered. The novel contribution of this work lies in the fact that measurements of far end crosstalk signal paths and transmission line signal paths on unbalanced transmission lines over a frequency range from 300 kHz to 100 MHz will be incorporated into this analysis. Also, this work presents a comparative capacity analysis of MIMO communications systems based on balanced transmission line channels and unbalanced transmission line channels where the extent of imperfect knowledge of the channel is quantified by the variance of the complex normally distributed scalar elements of a matrix and this has not been reported in literature to date. The physical measurements on the unbalanced transmission lines are offered here as being indicative of poor quality transmission lines where crosstalk levels and insertion losses are so significant that these poor quality transmission lines would be deemed out-of-range for high speed internet connections.
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