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The paper introduces an OFDM signal detector based on cyclic correlation function. The detector belongs to the class of blind SCD detectors. The paper presents the main relations connected with the idea of cyclostationarity and cyclostationary features of OFDM signals. Results of simulations are presented as well.
Kings Eye is a platform independent situational awareness prototype for smart devices. Platform independence is important as there are more and more soldiers bringing their own devices, with different operating systems, into the field. The concept of Bring Your Own Device (BYOD) is a low-cost approach to equipping soldiers with situational awareness tools and by this it is important to facilitate...
This paper presents the use of ElectroMagnetic (EM) simulation in RadioFrequency Interference (RFI) area. First, we describe a methodology to treat front door interference problems on large platforms. Based on a concrete example, we show that using EM simulation enables one to facilitate risk assessment, optimize antenna placement and understand complex physical phenomena. In the second section, radiating...
This paper presents a performance analysis of modern voice and FM plaintext voice with squelch over the automatic gain control (AGC) method developed by the U.S. Naval Research Laboratory (NRL) and implemented on the NRL Surrogate TACSAT communications relay payload. The AGC enabled relaying U.S. Military VHF voice and data communications beyond line of sight (BLOS) without exceeding our RF combiners...
In-band full-duplex (FD) operation can be regarded as one of the greatest discoveries in civilian/commercial wireless communications so far in this century. The concept is significant because it can as much as double the spectral efficiency of wireless data transmission by exploiting the new-found capability for simultaneous transmission and reception (STAR) that is facilitated by advanced self-interference...
Software-defined networks offer a promising framework for the implementation of cross-layer data-centric security policies in military systems. An important aspect of the design process for such advanced security solutions is the thorough experimental assessment and validation of proposed technical concepts prior to their deployment in operational military systems. In this paper, we describe an OpenFlow-based...
In the NATO enterprise architecture world, architectural elements and requirements of a project usually are managed separately. As architects have to connect both worlds, they struggle with using different tools, having little traceability and a lack of analysis options. In this paper, we present our extension to the NATO Architecture Framework (NAF) as well as a process for connecting and managing...
We present a concept for creating fully virtualized testbeds for the integration of ICT systems in the tactical domain. The concept features a framework for virtualizing and emulating ICT systems and a process for fully automated test runs, including setup and initialization of the ICT systems as well as the execution of simplified operational scenarios. A prototype has been implemented and different...
The Dynamic Spectrum Management is a key to increase the spectrum efficiency usage in rapidly growing demand for spectrum in military operations. In the paper, the main results of national project concerning DSM proposals for Polish Armed Forces are presented.
Cognitive Radio (CR) was designed to support flexible spectrum usage by adding spectrum sensing facilities and decision making logic to the radio devices. Cognitive Radio Network (CRN) is an extension of the CR concept to enable holistic end-to-end optimization of the network operation and services. We discuss CRN management issues in the context of military and tactical operation environments, where...
Cognitive radio is an emerging technology that has been under heavy research in the recent years, as it is considered to be a promising solution for the spectrum scarcity problem. In the European Defense Agency's project Cognitive Radio for Dynamic Spectrum Management (CORASMA) a high precision cognitive radio simulation environment was developed based on an artificial UHF waveform. Target of that...
It is becoming more and more obvious that the challenges regarding tactical radio communication cannot be met by a single static radio waveform. Instead, waveforms with different properties regarding range, robustness, and throughput need to be orchestrated. In order to benefit from the advantages of each radio technology integrated into the transparent tactical radio network, traffic engineering,...
Nowadays, military land vehicles are equipped with various sensors and effectors. These subsystems are often either not connected or are only connected via manufacturer-specific interfaces. This situation complicates efficient changes and extensions of vehicle equipment since modifications are only possible with the help of the original manufacturer. In order to unify subsystem interfaces and to increase...
Reliable, ad hoc communication among multiple users is a crucial objective in complex tactical scenarios. A major challenge is that synchronization mechanisms (such as GPS) are intermittent and fixed centralized coordinators (e.g., base stations) are infeasible. Classical approaches to multiuser communications relying on tight time synchronization and/or power control are impractical in such scenarios...
The battlefield scenarios are changing around the world presenting new challenges for the military. Battlefield environments have moved from the open to urban and constricted spaces forcing the military to adopt new doctrines and tactics for effective attack and defence. Whilst there have been many advances at the equipment level to support the ground forces i.e. the evolution of military vehicles...
Software Defined Networking (SDN) and analogous approaches to different domains like storage, compute and security have emerged as promising paradigms for controlling and managing many different types of distributed systems. In this paper, we examine the application of software defined concepts to coalition operations. Specifically, we propose the concept of Software Defined Coalitions (SDC), a mechanism...
Software-defined networking (SDN) is used commercially to improve network agility and traffic management capability. As deployed and tactical military systems are often constrained by network performance it is vital to quantify the performance impact of the SDN control plane if SDN is to be exploited in this environment. To assess this we identify the key types of messages used in OpenFlow and how...
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