  In diffusion-based molecular communication, information particles locomote
via a diffusion process, characterized by random movement and heavy tail
distribution for the random arrival time. As a result, the molecular
communication shows lower transmission rates. To compensate for such low rates,
researchers have recently proposed the molecular multiple-input multiple-output
(MIMO) technique. Although channel models exist for single-input single-output
(SISO) systems for some simple environments, extending the results to multiple
molecular emitters complicates the modeling process. In this paper, we
introduce a technique for modeling the molecular MIMO channel and confirm the
effectiveness via numerical studies.
