Inter-symbol interference reduction channel codes based on time gap in diffusion-based molecular communications
Publication date: Available online 22 January 2019Source: Nano Communication NetworksAuthor(s): Alireza Keshavarz-Haddad, Ali Jamshidi, Parvin AkhkandiAbstractIn diffusion-based molecular communication simple modulation techniques based on the concentration, type, or released time of molecules are commonly used. However, random delay of the diffused molecules in environment can cause some strong inter-symbol interference (ISI) among consecutive symbols. Due to the limited computational capabilities of nano-machines, sophisticated modulation and coding schemes cannot be used to resolve this issue . In this paper, we propose...
Source: Nano Communication Networks - January 23, 2019 Category: Nanotechnology Source Type: research
Energy model for synaptic channel in neuro-spike communication
Publication date: Available online 18 January 2019Source: Nano Communication NetworksAuthor(s): Zhen Cheng, Yiming Zhang, Huiting Zhao, Fei Lin, Kaikai ChiAbstractThe neuro-spike communication (NSC) is inspired by electrochemical communication among biological neurons. In this paper, considering that the energy consumption has important effects on the performance of NSC system, an energy model for the synaptic channel in a point-to-point NSC system is first proposed. Then the energy efficiency which is defined as the channel capacity per unit energy consumption for one spike transmission is analyzed. The numerical results ...
Source: Nano Communication Networks - January 20, 2019 Category: Nanotechnology Source Type: research
Sum rate analysis of multiple-access neuro-spike communication channel with dynamic spiking threshold
Publication date: Available online 14 January 2019Source: Nano Communication NetworksAuthor(s): Tooba Khan, Ozgur B. AkanAbstractThe information from outside world is encoded into spikes by the sensory neurons. These spikes are further propagated to different brain regions through various neural pathways. In the cortical region, each neuron receives inputs from multiple neurons that change its membrane potential. If the accumulated change in the membrane potential is more than a threshold value, a spike is generated. According to various studies in neuroscience, this spiking threshold adapts with time depending on the prev...
Source: Nano Communication Networks - January 15, 2019 Category: Nanotechnology Source Type: research
Antenna subarray management for hybrid beamforming in millimeter-Wave mesh backhaul networks
Publication date: Available online 6 January 2019Source: Nano Communication NetworksAuthor(s): Bangzhao Zhai, Aimin Tang, Cheng Huang, Chong Han, Xudong WangAbstractWireless mesh networking using millimeter-Wave (mmWave) bands provides a promising option for connecting densely deployed small base stations (BSs) to the core network. To fully exploit the potential of both wireless mesh networking and mmWave communications, hybrid beamforming is indispensable to help maintain connections with multiple neighbors, while providing directional antenna gain for BSs in mmWave mesh backhaul networks (MMBNs). Hybrid beamforming can f...
Source: Nano Communication Networks - January 6, 2019 Category: Nanotechnology Source Type: research
MAP detector performance analysis in diffusion-based relaying molecular communications
Publication date: Available online 4 January 2019Source: Nano Communication NetworksAuthor(s): Ali Jamshidi, Alireza Keshavarz-Haddad, Ghazaleh ArdeshiriAbstractMolecular Communication via Diffusion (MCvD) is a promising paradigm which enables nano-machines to communicate with each other. However, the reliability of existing communication systems degrades rapidly as the distance between the transmitters and the receivers grows. To solve this issue, relaying schemes must be implemented in practice. In this paper, we study two relaying schemes: In the first case, the relay node decodes the incoming signal symbol and forwards...
Source: Nano Communication Networks - January 4, 2019 Category: Nanotechnology Source Type: research
Energy-aware and fault-tolerant custom topology design method for network-on-chips
This article deals with the latter problem. That is, we provide a fault-tolerant topology generation method that can tolerate single permanent link failure on a NoC architecture that is designed for a particular application. Our generated topologies provide fault-tolerance by providing at least two alternative paths between the application’s communicating nodes. Our method is a genetic algorithm based method, which generates an initial population based on ring topology and produces better irregular topologies in terms of energy consumption through genetic operators. The objective function of the proposed method is to min...
Source: Nano Communication Networks - December 18, 2018 Category: Nanotechnology Source Type: research
On medium access control schemes for wireless networks in the millimeter-wave and Terahertz bands
Publication date: Available online 7 December 2018Source: Nano Communication NetworksAuthor(s): Chong Han, Xiaofei Zhang, Xudong WangAbstractMillimeter wave (mmW) and Terahertz band (THz) play important roles for future wireless communications to support ultra-high data rates. However, the high propagation loss and inherent directivity features pose critical challenges on the medium access control (MAC) protocol design to fully exploit their potential benefits, including deafness, control channel selection mechanism, line-of-sight (LoS) blockage, mobility management and spatial reuse strategy. To address these challenges, ...
Source: Nano Communication Networks - December 8, 2018 Category: Nanotechnology Source Type: research
High-accuracy distance estimation for molecular communication systems via diffusion
Publication date: Available online 7 December 2018Source: Nano Communication NetworksAuthor(s): Lin Lin, Zhan Luo, Li Huang, Chunfu Luo, Qian Wu, Hao YanAbstractThe advancement in nanotechnology has promoted the development of molecular communication. Nano-devices can communicate with each other by molecular communication at the nano- or micro- scale. The distance between the nanomachines is an important parameter in the molecular communication system. It is needed in the clock synchronization protocol, the transmission rate optimization, etc. In this paper, we propose a high-accuracy protocol for estimating distance based...
Source: Nano Communication Networks - December 8, 2018 Category: Nanotechnology Source Type: research
Novel decoding methods of constant weight coding for molecular communications
Publication date: Available online 28 November 2018Source: Nano Communication NetworksAuthor(s): Mehmet Gorkem Ulkar, Ali Emre Pusane, Tuna TugcuAbstractMolecular communications via diffusion (MCvD) is a popular research area thanks to its potential applications, mostly in nanocommunications. Despite many recent publications on MCvD, the studies on error correction/channel coding for molecular communications are limited. Low weight channel codes have been proposed in the literature due to their energy efficiency and ISI mitigation. We add the constant weight condition on top of being low weight for MCvD channel codes, sinc...
Source: Nano Communication Networks - November 29, 2018 Category: Nanotechnology Source Type: research
A novel star shape photonic crystal fiber for low loss terahertz pulse propagation
Publication date: Available online 26 November 2018Source: Nano Communication NetworksAuthor(s): Fahad Ahmed, Subrata Roy, Kawsar Ahmed, Bikash Kumar Paul, Ali Newaz BaharAbstractAn extremely low loss circle-based star shape photonic crystal fiber (CS-PCF) has been proposed for terahertz (THz) spectrum. A dielectric material TOPAS has been used for constructing the proposed model. Some important parameters for the proposed waveguide have been investigated a wide THz spectrum ranging from 0.5 to 2.50 THz. The simulation result exhibits an extremely-low material loss of 0.01607 cm−1 and a large effective area of 1.386 × ...
Source: Nano Communication Networks - November 27, 2018 Category: Nanotechnology Source Type: research
Editorial Board
Publication date: December 2018Source: Nano Communication Networks, Volume 18Author(s): (Source: Nano Communication Networks)
Source: Nano Communication Networks - November 23, 2018 Category: Nanotechnology Source Type: research
QCA based design of Polar encoder circuit for nano communication network
Publication date: December 2018Source: Nano Communication Networks, Volume 18Author(s): Jadav Chandra Das, Debashis DeAbstractNanocommunication in QCA has gain wide range of research interest. Several QCA based nanocommunication architectures have already been reported by researchers. Nevertheless, still there is a wide range of domain to design QCA based architecture for nanocommunication. This work explores the design and implementation of Polar encoder in this route. Polar codes are the technique to achieve reliable data communication. Polar code reduces the block error probability in an exponential order with the asymp...
Source: Nano Communication Networks - November 23, 2018 Category: Nanotechnology Source Type: research
New designs of fault-tolerant adders in quantum-dot cellular automata
Publication date: Available online 16 November 2018Source: Nano Communication NetworksAuthor(s): Seyed-Sajad Ahmadpour, Mohammad MoslehAbstractQuantum-dot cellular automata (QCA) technology has attracted attention as one of the best forms of alternative Nanoscale CMOS technology. It has facilitated the designing of digital circuits with high density and speed. One of the important issues in QCA technology is designing fault-tolerant digital circuits. QCA-based circuits frequently suffer from fabrication and unstable faults: these make them unreliable and susceptible to breakdown. In this paper, two new fault-tolerant 3-inp...
Source: Nano Communication Networks - November 17, 2018 Category: Nanotechnology Source Type: research
Sensorless node architecture for events detection in self-powered nanosensor networks
This study presents a detailed description of a sensorless event detection node which consists of two components - an energy harvester and a pulse generator. We discuss the state of the art configurations for these two components. However, due to the low complexity of the nanoscale device, the pulse generator should be kept simple. We, therefore, theoretically investigate different approaches for the pulse generator to generate Surface Plasmon Polaritons (SPPs) which reasonably resemble femtoseconds long pulses in graphene. Based on our analysis, we find that SPPs can be excited using a near-field excitation method for the...
Source: Nano Communication Networks - November 11, 2018 Category: Nanotechnology Source Type: research
Passive droplet control in microfluidic networks: A survey and new perspectives on their practical realization
Publication date: Available online 9 November 2018Source: Nano Communication NetworksAuthor(s): Medina Hamidović, Werner Haselmayr, Andreas Grimmer, Robert Wille, Andreas SpringerAbstractTwo-phase flow microfluidics is a promising platform for realizing Lab-on-a-Chip (LoC) devices, that perform different laboratory functions on a single chip. This is accomplished by processing droplets, containing biological/chemical samples, by different elements each performing specific operations. Usually, the sequence of elements in which droplets are processed is fixed, which limits the flexibility, effectiveness and reusability of s...
Source: Nano Communication Networks - November 9, 2018 Category: Nanotechnology Source Type: research
