Non-preemptive offline multi-job mapping for a photonic network on a chip
In this study, we propose a chain of offline multi-job mapping in a photonic network on a chip to improve the delay and power consumption by using a scheduling, allocation, and mapping algorithm. Using the proposed method, the smallest time size first (STSF) scheduling algorithm can be improved by at least 15% in terms of the average waiting time and by 14% for the average response time. Furthermore, with the STSF/ROW/ROW/loss aware (LA) (scheduling/allocation/migration/mapping) schema, the execution time and energy efficiency can be improved by up to 32% and 28 %, respectively. (Source: Nano Communication Networks)
Source: Nano Communication Networks - December 27, 2016 Category: Nanotechnology Source Type: research
THz Communications
Publication date: December 2016 Source:Nano Communication Networks, Volume 10 Author(s): Wolfgang Gerstacker, Josep Miquel Jornet (Source: Nano Communication Networks)
Source: Nano Communication Networks - December 1, 2016 Category: Nanotechnology Source Type: research
Editorial: Receiving the Baton
Publication date: September 2016 Source:Nano Communication Networks, Volume 9 Author(s): Josep Miquel Jornet, Sasitharan Balasubramaniam (Source: Nano Communication Networks)
Source: Nano Communication Networks - November 14, 2016 Category: Nanotechnology Source Type: research
Editorial: Passing the baton
Publication date: September 2016 Source:Nano Communication Networks, Volume 9 Author(s): Ian F. Akyildiz (Source: Nano Communication Networks)
Source: Nano Communication Networks - November 14, 2016 Category: Nanotechnology Source Type: research
Estimating the dissipative factors of synaptic exocytosis in Drosophila using a filter based reverse engineering method
Publication date: Available online 29 October 2016 Source:Nano Communication Networks Author(s): Jian-Qin Liu, Haruhiko Nishimura The SNARE-regulated exocytosis is an important molecular level mechanism for the persistent inter-neuronal communication via plasticity of neurons. Without considering the dissipation of synaptic vesicle, the explanation of the inter-neuronal communication via plasticity of neurons in existing models cannot fully account for the persistence of neuronal plasticity. In this paper the dissipative factors CPX and SYT corresponding to unbinding neurotransmitters fused with the membrane are estima...
Source: Nano Communication Networks - October 28, 2016 Category: Nanotechnology Source Type: research
Ultrashort optical pulse source using Mach –Zehnder-modulator-based flat comb generator
We reported ultrashort pulse generation using a Mach–Zehnder-modulator-based flat comb generator (MZ-FCG) and a dispersion-flattened dispersion-decreasing fiber (DF-DDF). Our source has high stability, low jitter, and independent control of the repetition rate and center wavelength. 80 fs-order ultrashort pulse generation was demonstrated. The phase noise of the ultrashort pulse train is determined by that of the microwave signal driving the MZ-FCG, which was -110 dBc/Hz at the offset frequency of 100 kHz. The rms timing jitter of the femtosecond pulses was 80 fs, and the frequency stability evaluated with Allan deviatio...
Source: Nano Communication Networks - October 10, 2016 Category: Nanotechnology Source Type: research
Review of weather impact on outdoor terahertz wireless communication links
Publication date: Available online 5 October 2016 Source:Nano Communication Networks Author(s): John F. Federici, Jianjun Ma, Lothar Moeller As the demand for higher wireless data rates continues to increase, there has been more interest in extending the carrier frequency of wireless links from the millimeter wave range into the terahertz (THz) range. For long distance wireless communications, THz links can suffer significant signal loss due to atmospheric weather effects. Obviously, for evaluating wireless system link budgets, it will be important to estimate the weather impact on high capacity data links and compare...
Source: Nano Communication Networks - October 5, 2016 Category: Nanotechnology Source Type: research
Terahertz electromagnetic field propagation in human tissues: A study on communication capabilities
Publication date: Available online 3 October 2016 Source:Nano Communication Networks Author(s): G. Piro, P. Bia, G. Boggia, D. Caratelli, L.A. Grieco, L. Mescia A Body Area Nano-NETwork represents a system of biomedical nano-devices that, equipped with sensing, computing, and communication capabilities, can be implanted, ingested, or worn by humans for collecting diagnostic information and tuning medical treatments. The communication among these nano-devices can be enabled by graphene-based nano-antennas, which generate electromagnetic waves in the Terahertz band. However, from a perspective of the electromagnetic ...
Source: Nano Communication Networks - October 3, 2016 Category: Nanotechnology Source Type: research
Fibroblasts cell number density based human skin characterization at THz for in-body nanonetworks
Publication date: Available online 30 September 2016 Source:Nano Communication Networks Author(s): Nishtha Chopra, Ke Yang, Jamie Upton, Qammer Hussain Abbasi, Khalid Qaraqe, Mike Philpott, Akram Alomainy This paper presents the investigation of the electromagnetic properties of human skin tissues using Terahertz Time Domain Spectroscopy (THz-TDS). The material parameters i.e., refractive index and absorption coefficient are extracted for artificially synthesized skin cultured using fibroblast cells and collagen type I reagent. The increase in cell count number by 200% will cause a distinctive decrease in refracti...
Source: Nano Communication Networks - September 30, 2016 Category: Nanotechnology Source Type: research
Graphene terahertz devices for communications applications
Publication date: Available online 28 September 2016 Source:Nano Communication Networks Author(s): Mehdi Hasan, Sara Arezoomandan, Hugo Condori, Berardi Sensale-Rodriguez The extraordinary electronic, thermal and optical properties of graphene, together with its two dimensional nature, and with the possibility of facile integration, have enabled its application into a new generation of high-performance devices capable of extending the performance of existing terahertz communications technologies. Although promising for wireless communications applications, the terahertz region of the spectrum, i.e. the frequency ran...
Source: Nano Communication Networks - September 28, 2016 Category: Nanotechnology Source Type: research
Chirality effects on channel modeling for THz-band wireless communications in LoS/NLoS propagation
Publication date: Available online 28 September 2016 Source:Nano Communication Networks Author(s): Anna Maria Vegni, Valeria Loscrí Channel modeling in the Terahertz frequency band has become a very hot research field, above all in the context of nano-Internet of Things. Thanks to the exploitation of frequencies in the interval ranging from 0.06 to 10 THz, it is envisioned the possibility to overcome the issues related to the spectrum scarcity and capacity limitation. On the other hand, the design of new channel models, able to capture the inherent features of the phenomenons related with this specific field is of p...
Source: Nano Communication Networks - September 28, 2016 Category: Nanotechnology Source Type: research
Modulation and rate adaptation algorithms for terahertz channels
We describe a pulse modulation technique where multiple symbols are transmitted in each pulse. The technique is shown to achieve terabit/sec datarates. Subsequently, we examine the problem of rate adaptation which is significant at these frequencies due to the high distance based attenuation. Algorithms are presented to fairly share the channel among multiple users located at different distances from the access point. The research is based on simulations in Matlab and the channel model used is based on our own measurements using a time-domain terahertz system. The channel model is also presented in this paper. (Source: Nan...
Source: Nano Communication Networks - September 28, 2016 Category: Nanotechnology Source Type: research
Non- preemptive off-line mapping multi-job on photonic network on chip
Publication date: Available online 23 September 2016 Source:Nano Communication Networks Author(s): Akram Reza, Reza Faghih Mirzaee The demand for robust computation systems has led to the increment number of processing cores in current chips. The photonic interconnection have suggested as communication on chip infrastructure with high bandwidth, low power consumption and scalable structure. The photonic network on chip provide interconnection to integrate more than hundred processing cores in a chip, thus this structure is suitable for running multi-job on a single chip. In this paper, a chain of off-line mapping multi...
Source: Nano Communication Networks - September 23, 2016 Category: Nanotechnology Source Type: research
Ultrashort optical pulse source using Mach-Zehnder-modulator-based flat comb generator
We reported ultrashort pulse generation using a Mach-Zehnder-modulator-based flat comb generator (MZ-FCG) and a dispersion-flattened dispersion-decreasing fiber (DF-DDF). Our source has high stability, low jitter, and independent control of the repetition rate and center wavelength. 80 fs-order ultrashort pulse generation was demonstrated. The phase noise of the ultrashort pulse train is determined by that of the microwave signal driving the MZ-FCG, which was -110 dBc/Hz at the offset frequency of 100 kHz. The rms timing jitter of the femtosecond pulses was 80 fs, and the frequency stability evaluated with Allan deviation ...
Source: Nano Communication Networks - September 23, 2016 Category: Nanotechnology Source Type: research
Practical considerations of terahertz communications for short distance applications
Publication date: Available online 23 September 2016 Source:Nano Communication Networks Author(s): Tadao Nagatsuma, Kazuki Oogimoto, Yuki Inubushi, Jiro Hirokawa This paper describes two practical issues of terahertz (THz) communications for short-distance applications. One is the effect of standing waves formed between transmitter and receiver antennas in close-proximity or near-field communications. We discuss and propose new approaches to decreasing or eliminating the standing-wave effect by carrier signal modulation and by using array antenna structures. The other issue is the effect of beam misalignment between ...
Source: Nano Communication Networks - September 23, 2016 Category: Nanotechnology Source Type: research
