Feasibility study of the THz band for communications between wearable electronics

Emerging wearable nano sensor networks enable a set of valuable applications in biomedical and environmental fields. At the same time, the current state of communication technologies significantly limits the processing capabilities of prospective nanomachines. Consequently, implying that all the analysis of collected data needs to be performed on a macro device. Therefore, to effectively enable long-awaited applications of nano networks their seamless integration into existing networking infrastructure is required, leading to the concept of Internet of Nano Things. In this paper, the interoperability between already deployed macro networks and emerging nano networks is preliminary investigated. The solution for this problem is nontrivial, as the existing macro wireless networks use primarily the carrier-based electromagnetic communications, while nanomachines must rely on ultra-low-power pulse-based EM radiation or inherently mobile objects as information carriers. Thus, the direct interaction between macro and nano networks is currently not feasible, forcing using special gateway nodes. Moreover, the modern solutions for nano communications have to be rapidly improved to enable construction of large-scale networks on top of existing link level techniques. Numerous theoretical questions are to be addressed to achieve this goal, ranging from the design of a proper modulation and coding technique to mitigation of noise and interference effects

Analytical approaches for short-range wireless technologies evaluation

Analytical evaluation approaches play a very important role, when the applicability of short-range wireless technology is assessed for emerging applications and scenarios, like machine-to-machine, device-to-device, heterogeneous networking, etc. Due to a set of limitations of measuring and simulation strategies, a closed-form equation describing the network characteristics as a function of parameters could be very suitable in the cases, that were not studied before: new application, traffic pattern or scenario. This paper presents an overview of existing approaches aiming to evaluate different types of short-range networking. Starting from simple cases: channel modeling and saturated system analysis, we finally come to the stability criteria and different traffic patterns affect on the network performance

Performance comparison of selected wired and wireless networks on chip architectures

In this paper we compare performance intra-core communications in network on chips.We consider two alternative architectures, wired and wireless. The wired on is based on a common bus (ring) with all the cores attached to it. We compare it to the mesh (point-to-point) architecture based on THz wireless links operating in 0.1-0.54 frequency band. Using reference latencies of inter-core communications in modern CPUs we perform an applicability assessment of considered schemes. As performance metrics of interest we consider both delay and capacity. Our results indicate that the latter architecture outperforms the former by a singificant margin. The proposed system can be realized implementing directional antennas at all cores and ensuring that cores are placed on a chip such that there is no interference between them