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      Optimal Receiver Design for Diffusive Molecular Communication With Flow and Additive Noise

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          Abstract

          In this paper, we perform receiver design for a diffusive molecular communication environment. Our model includes flow in any direction, sources of information molecules in addition to the transmitter, and enzymes in the propagation environment to mitigate intersymbol interference. We characterize the mutual information between receiver observations to show how often independent observations can be made. We derive the maximum likelihood sequence detector to provide a lower bound on the bit error probability. We propose the family of weighted sum detectors for more practical implementation and derive their expected bit error probability. Under certain conditions, the performance of the optimal weighted sum detector is shown to be equivalent to a matched filter. Receiver simulation results show the tradeoff in detector complexity versus achievable bit error probability, and that a slow flow in any direction can improve the performance of a weighted sum detector.

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          Author and article information

          Journal
          01 August 2013
          2014-07-07
          Article
          10.1109/TNB.2014.2337239
          1308.0109
          30f10bf5-7b76-49ac-90a4-33c003c9efd8

          http://arxiv.org/licenses/nonexclusive-distrib/1.0/

          History
          Custom metadata
          14 pages, 7 figures, 1 appendix. To appear in IEEE Transactions on NanoBioscience (submitted July 31, 2013, revised June 18, 2014, accepted July 7, 2014)
          cs.IT math.IT

          Numerical methods,Information systems & theory
          Numerical methods, Information systems & theory

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