1 research outputs found
Using spatial partitioning to reduce the bit error rate of diffusion-based molecular communications
This work builds on our earlier work on designing demodulators for
diffusion-based molecular communications using a Markovian approach. The
demodulation filters take the form of an ordinary differential equation (ODE)
which computes the log-posteriori probability of observing a transmission
symbol given the continuous history of receptor activities. A limitation of our
earlier work is that the receiver is assumed to be a small cubic volume called
a voxel. In this work, we extend the maximum a-posteriori demodulation to the
case where the receiver may consist of multiple voxels and derive the ODE for
log-posteriori probability calculation. This extension allows us to study
receiver behaviour of different volumes and shapes. In particular, it also
allows us to consider spatially partitioned receivers where the chemicals in
the receiver are not allowed to mix. The key result of this paper is that
spatial partitioning can be used to reduce bit-error rate in diffusion-based
molecular communications.Comment: 39 pages, 20 figures, submitted for possible publication in IEE