Name
Title | ||
|---|---|---|
Receivers for Diffusion-Based Molecular Communication: Exploiting Memory and Sampling Rate |
Abstract | ||
|---|---|---|
In this paper, a diffusion-based molecular communication channel between two nano-machines is considered. The effect of the amount of memory on performance is characterized, and a simple memory-limited decoder is proposed; its performance is shown to be close to that of the best possible decoder (without any restrictions on the computational complexity or its functional form), using genie-aided upper bounds. This effect is adapted to the case of Molecular Concentration Shift Keying; it is shown that a four-bit memory achieves nearly the same performance as infinite memory for all of the examples considered. A general class of threshold decoders is considered and shown to be suboptimal for a Poisson channel with memory, unless the SNR is higher than a computed threshold. During each symbol duration (symbol period), the probability that a released molecule hits the receiver changes over the duration of the period; thus, we also consider a receiver that samples at a rate higher than the transmission rate (a multi-read system). A multi-read system improves performance. The associated decision rule for this system is shown to be a weighted sum of the samples during each symbol interval. The performance of the system is analyzed using the saddle point approximation. The best performance gains are achieved for an oversampling factor of three for the examples considered. |
Year | DOI | Venue |
|---|---|---|
2014 | 10.1109/JSAC.2014.2367732 | Selected Areas in Communications, IEEE Journal |
Keywords | Field | DocType |
computational complexity,molecular communication (telecommunication),receivers,stochastic processes,Poisson channel,associated decision rule,computational complexity,diffusion based molecular communication channel,exploiting memory,molecular concentration shift keying,multiread system,nanomachines,receivers,saddle point approximation,sampling rate,simple memory limited decoder,threshold decoders,Diffusion,Molecular communication,Multiple reads,Receiver,diffusion,multiple reads,receiver | Molecular communication,Oversampling,Noise measurement,Computer science,Sampling (signal processing),Keying,Algorithm,Communication channel,Real-time computing,Decoding methods,Computational complexity theory | Journal |
Volume | Issue | ISSN |
32 | 12 | 0733-8716 |
Citations | PageRank | References |
33 | 1.36 | 16 |
Authors | ||
4 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| R. Mosayebi | 1 | 33 | 1.36 |
| H. Arjmandi | 2 | 33 | 1.36 |
| A. Gohari | 3 | 33 | 1.36 |
| M. Nasiri-Kenari | 4 | 33 | 1.36 |