61 research outputs found
Scaling laws for molecular communication
In this paper, we investigate information-theoretic scaling laws, independent
from communication strategies, for point-to-point molecular communication,
where it sends/receives information-encoded molecules between nanomachines.
Since the Shannon capacity for this is still an open problem, we first derive
an asymptotic order in a single coordinate, i.e., i) scaling time with constant
number of molecules and ii) scaling molecules with constant time . For a
single coordinate case, we show that the asymptotic scaling is logarithmic in
either coordinate, i.e., and , respectively.
We also study asymptotic behavior of scaling in both time and molecules and
show that, if molecules and time are proportional to each other, then the
asymptotic scaling is linear, i.e., .Comment: Accepted for publication in the 2014 IEEE International Symposium on
Information Theor
Channel Model of Molecular Communication via Diffusion in a Vessel-like Environment Considering a Partially Covering Receiver
By considering potential health problems that a fully covering receiver may
cause in vessel-like environments, the implementation of a partially covering
receiver is needed. To this end, distribution of hitting location of messenger
molecules (MM) is analyzed within the context of molecular communication via
diffusion with the aim of channel modeling. The distribution of these MMs for a
fully covering receiver is analyzed in two parts: angular and radial
dimensions. For the angular distribution analysis, the receiver is divided into
180 slices to analyze the mean, standard deviation, and coefficient of
variation of these slices. For the axial distance distribution analysis,
Kolmogorov- Smirnov test is applied for different significance levels. Also,
two different implementations of the reflection from the vessel surface (i.e.,
rollback and elastic reflection) are compared and mathematical representation
of elastic reflection is given. The results show that MMs have tendency to
spread uniformly beyond a certain ratio of the distance to the vessel radius.
By utilizing the uniformity, we propose a channel model for the partially
covering receiver in vessel-like environments and validate the proposed model
by simulations
Detection Algorithms for Molecular MIMO
In this paper, we propose a novel design for molecular communication in which
both the transmitter and the receiver have, in a 3-dimensional environment,
multiple bulges (in RF communication this corresponds to antenna). The proposed
system consists of a fluid medium, information molecules, a transmitter, and a
receiver. We simulate the system with a one-shot signal to obtain the channel's
finite impulse response. We then incorporate this result within our
mathematical analysis to determine interference. Molecular communication has a
great need for low complexity, hence, the receiver may have incomplete
information regarding the system and the channel state. Thus, for the cases of
limited information set at the receiver, we propose three detection algorithms,
namely adaptive thresholding, practical zero forcing, and Genie-aided zero
forcing.Comment: 6 pages, 6 figures, 2015 IEEE ICC accepte
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