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This paper presents an new approach to noise reduction for voice communication over Bluetooth technology. In the literature, several authors have compared the performance of different filtering techniques, such as the well-known Spectral Subtraction (SS), and Wiener Filter (WF) using simulated data, whereas this research uses real-time data samples collected from cars subjected to a noisy environment...
Cooperative intelligent transportation systems have become an active topic with the introduction of smart communications between vehicles, increasing driver safety, traffic efficiency and ultimately paving way for autonomous vehicles. These vehicular communications have stringent transmission requirements. Among various proposed communication protocols, use of heterogeneous networks, combining long...
Ultra-reliable and low latency communications is envisioned to enable new services and applications with high reliability, availability and low latency, e.g, factory automation, Tactile Internet. Device-to-device communication is one such mean that allows devices to experience benefits in terms of shorter communication latency. Currently most device-to-device communication in frequency-division duplex...
The problems associated with multipath routing in Border Gateway Protocol (BGP) for Autonomous Systems (ASes) can be solved with some model or control systems from the Software Defined Networking (SDN). The SdN controller could be used to solve the inconsistencies in the scalability and latency of the Routing Information Base (RIB) of ASes. Also, a set of modules for Inter-AS routing and Brokering...
Smart optimisation of radio resource distribution techniques is crucial in improving the overall performance of Next-Generation Networks (NGNs). Since higher data rates, lower latency and increased fairness for users are the main goals, an efficient scheduling algorithm has to be used. In this paper an evaluation of the performance of an indoor network is realised using the Realistic Indoor Environment...
This work presents two-rank (Wi-Fi and LTE) analytical model, from which we can evaluate the goodput of vehicular wireless network depending on the number of vehicles N in the access point (AP) coverage area. To evaluate the suitability of the model used, experimental data are compared with the theoretically calculated data. The results obtained allow us to evaluate the performance of each individual...
Due to massive advantages of short range communication technologies such as NFC and RFID, they are ubiquitously utilized in many fancy and sensitive applications. During last decade, there have been impressive endeavors to design efficient authentication protocols which can provide secure and anonymous communication for end-users. In this research, we formally analyze a recently improved authentication...
This paper is devoted to analysis of the requirements to local ship positioning system parameters in relation of sea wave influence. Basic operation principles of the system operation are described. Also the affecting of sea waves on vessel position is discussed. It is shown; the update frequency of position data and the single measurement duration, both are the most significant parameters in scope...
This paper presents a new method of smart waste city management which makes the environment of the city clean with a low cost. In this approach, the sensor model detects, measures, and transmits waste volume data over the Internet. The collected data including trash bin's geolocation and the serial number is processed by using regression, classification and graph theory. Thenceforth a new method is...
In order to meet various requirements of the 5th generation (5G) communication system, larger amounts of spectrum are required. Television White Space (TVWS) and Licensed-Assisted Access (LAA) can only utilize the specific frequency band as shared frequency and have no mechanism for sharing the other frequency bands to obtain more frequency resources. We have proposed a dynamic frequency-sharing system...
In large scale Wireless Sensor Networks (WSNs), the random deployment of the sensor nodes does not guarantee the desired level of the area coverage especially when the network is sparse. One of the solutions to overcome this problem is to use a mobile robot that is equipped with, in addition to the sensing unit, an actuator unit that controls its movement. In this case, the mobile robot is considered...
In this work, a relay-selection scheme is proposed for underlay cognitive radio networks, with fixed and adaptive relaying power. The relay-selection and power allocation is based on the calculation of the log-likelihood ratio (LLR) value, calculated at each of the relay nodes available in the secondary network. No interference is caused to the primary network, through the satisfaction of a low power...
In the future intelligent transport systems (ITS) the reliability and precision of the cooperative and autonomous vehicles are of the utmost importance. For such systems vehicle-to-vehicle and vehicle-to-infrastructure (V2X) communications is safety-critical component of ITS. Many mobility and convenience applications of ITS require the V2X bidirectional communications mode. This paper focuses on...
Direct Device-to-Device (D2D) communication permits to offload the network, increase the capacity, and extend the cellular coverage. In D2D systems, user equipments (UEs) do not necessarily communicate via evolved Node Base station (eNB); instead, they are allowed to communicate directly with each other. This underlying communication generates interference due to reusing the same resources of the...
This paper investigates the leakage rate based hybrid untrustworthy relay selection strategy. The investigation considers a dual-hop multiple half/full-duplex untrustworthy bidirectional amplify-and-forward wireless relaying network in the system model. The investigation also considers that the untrustworthy relay terminals are under the effect of a finite number of friendly jammers' interference...
Data transmission capacity of ad-hoc wireless networks could be increased by using multi-path transmission and minimising mutual interference between nodes. This approach could also be used to extend D2D communication opportunities in 5G. The objective of this paper is theoretical analysis and computer simulation to reveal the best conditions for combining smart antennas and multi-path transmission...
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