Digital Signal Processing

2102 Submissions

[3] viXra:2102.0057 [pdf] submitted on 2021-02-10 20:30:48

Age of Information in an URLLC-enabled Decode-and-Forward Wireless Communication System

Authors: Chathuranga M. Wijerathna Basnayaka, Dushantha Nalin K. Jayakody, Tharindu D. Ponnimbaduge Perera
Comments: 6 Pages.

Age of Information (AoI) measures the freshness of data in mission critical Internet-of-Things (IoT) applications i.e., industrial internet, intelligent transportation systems etc. In this paper, a new system model is proposed to estimate the average AoI (AAoI) in an ultra-reliable low latency communication (URLLC) enabled wireless communication system with decodeand-forward relay scheme over the quasi-static Rayleigh block fading channels. Short packet communication scheme is used to meet both reliability and latency requirements of the proposed wireless network. By resorting finite block length information theory, queuing theory and stochastic processes, a closed-form expression for AAoI is obtained. Finally, the impact of the system parameters, such as update generation rate, block length and block length allocation factor on the AAoI are investigated. All results are validated by the numerical results.
Category: Digital Signal Processing

[2] viXra:2102.0037 [pdf] submitted on 2021-02-06 18:43:52

IPTV Improvement Approach over LTE-WLAN Heterogeneous Networks

Authors: Mohamed Matoui, Noureddine Moumkine, Abdellah Adib
Comments: 19 Pages. [Corrections are made by viXra Admin to comply with the rules of viXra.org]

IPTV (Internet Protocol Television) includes several video components. The IMS (IP Multimedia Subsystem) cannot differentiate between them what causes their treatment similarly. These sub-components must have different priorities because they have distinct QoS constraints. In this paper, we suggest the implementation of IPTV in a heterogeneous network that improved QoS by providing the capability to prioritize the sub traffic according to the system administrator policy. A new IPv6 flow label field definition was proposed that is ready for standardization. OPNET Modeler software is used to design our approached architecture. The results show that IPTV users receive different amounts of video data based on the stream's priority.
Category: Digital Signal Processing

[1] viXra:2102.0028 [pdf] submitted on 2021-02-05 21:57:05

Hridai: a Tale of Two Categories of Ecgs

Authors: Priya Ranjan, Kumar Dron Shrivastav, Satya Vadlamani, Rajiv Janardhanan
Comments: 21 Pages. Proc. SIRS-2020.

This work presents a geometric study of computational disease tagging of ECGs problems. Using ideas like Earthmover’s distance (EMD) and Euclidean distance, it clusters category 1 and category −1 ECGs in two clusters, computes their average and then predicts the category of 100 test ECGs, if they belong to category 1 or category −1. We report 80% success rate using Euclidean distance at the cost of intense computation investment and 69% success using EMD. We suggest further ways to augment and enhance this automated classification scheme using bio-markers like Troponin isoforms, CKMB, BNP. Future direc- tions include study of larger sets of ECGs from diverse populations and collected from a heterogeneous mix of patients with different CVD conditions. Further we advocate the robustness of this programmatic approach as compared to deep learning kind of schemes which are amenable to dynamic instabilities. This work is a part of our ongoing framework Heart Regulated Intelligent Decision Assisted Information (HRIDAI) system.
Category: Digital Signal Processing