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- W1966600169 abstract "Multiple-input and multiple-output processing techniques in fiber optical communications have been proposed as a promising approach to meet increasing demand for information throughput. In this context, the multiple channels correspond to the multiple modes or multiple cores or both in the fiber. In this paper, we characterize the distribution of the mutual information with Gaussian input in a simple channel model for this system. Assuming significant crosstalk between cores, negligible backscattering and near-lossless propagation in the fiber, we model the transmission channel as a random complex unitary matrix. The loss in the transmission may be parameterized by a number of unutilized channels in the fiber. We analyze the system in a dual fashion. First, we evaluate a closed-form expression for the outage probability, which is handy for small matrices. We also apply the asymptotic approach, in particular the Coulomb gas method from statistical mechanics, to obtain closed-form results for the ergodic mutual information, its variance as well as the outage probability for Gaussian input in the limit of large number of cores/modes. By comparing our analytic results to simulations, we see that, despite the fact that this method is nominally valid for large number of modes, our method is quite accurate even for small to modest number of channels." @default.
- W1966600169 created "2016-06-24" @default.
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- W1966600169 date "2014-07-01" @default.
- W1966600169 modified "2023-10-01" @default.
- W1966600169 title "Outage Capacity for the Optical MIMO Channel" @default.
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- W1966600169 doi "https://doi.org/10.1109/tit.2014.2320518" @default.
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