The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
For innovation to be successful, it is necessary for the adequate resources to be readily available. Commonly, resource availability results from significant technical, regulatory and scientific investments. Regulatory bodies, like the Federal Communications Commission, have made significant efforts in order to promote innovation. Innovation comes from entities of different sizes and areas of impact,...
A geospatial analysis component is beneficial to the Radio Frequency Interference Monitoring System (RFIMS). RFIMS will be implemented due to auctioned-based spectrum sharing between the National Oceanic and Atmospheric Administration (NOAA) meteorological setellite downlink stations and commercial wireless providers. The geospatial component provides a cost effective and quick processing method to...
In spectrum sharing, incumbents with sensitive parameters require full protection of their operations. The incumbent's protection includes the protection of its privacy (e.g., operational frequency) against inference attacks carried out by malicious authorized secondary users. In this paper, we develop an analytical model to analyze the vulnerability of the incumbent's frequency to inference attacks...
Wideband spectrum sensing aims to identify the occupied frequency bands. Conventional methods for single antenna spectrum sensors threshold the received power spectra to detect discrete frequency bins that are occupied. However, such methods neither group bins that are occupied by the same signal nor aggregate occupied bins over time to learn distinct frequency bands occupied by intermittently transmitting...
Wireless services that rely on Dynamic Spectrum Access (DSA) or spectrum sharing mechanisms require a well-defined means to communicate how each device or system is using spectrum resources in a particular environment or situation so that the devices that receive such information can make rational decisions on the possible use of the spectrum. Spectrum consumption models (SCMs) address this issue...
We propose to demonstrate and obtain community feedback on the RadioHound system, a custom spectrum sensing network capable of tuning from 25 MHz to 6 GHz, which covers nearly all widely-deployed wireless activity. We describe the system hardware and network infrastructure in detail with a view towards driving the cost, size, and power usage of the sensors as low as possible.
In wireless communication it is assumed that transmitting nodes are unable to detect collisions. However, using recent advances in in-band full duplex, a system can be developed where the self-transmitted signal is sufficiently canceled in order to detect ongoing collisions. Enabling concurrent transmission and collision detection can greatly improve wireless communication by enhancing throughput...
We present Electrosense: a distributed, collaborative and low-cost wireless spectrum monitoring solution which is deployed on a large scale. The proposed framework provides tools to enable and promote a crowdsourced open spectrum monitoring platform for wide area deployments. The collected spectrum data is stored and processed in the backend which can be easily retrieved by the users through an open...
With the next-generation over-the-air (OTA) TV standard, Advanced Television Systems Committee (ATSC) 3.0, TV receiver feedback via broadband or dedicated radio channel will become a standard feature. Real-time TV receiver feedback potentially allows secondary users to access active TV channels without interfering with TV users, which would bring 6–10-fold data rate increase on top of the current...
We evaluate for the existing UHF U.S. TV stations two ways to increase the spectrum reuse to repack them in a smaller block without reducing the coverage or bandwidth of any TV station. One way is to increase the transmit power of each broadcaster's only transmitter by the same number of dB, and another more effective way is to replace that transmitter with a low-power low-tower (LPLT) Single Frequency...
Recent applications of machine learning to modulation recognition have demonstrated the potential of deep learning to achieve state-of-the-art performance. We propose to further extend this approach by using flexible time-space decompositions that are more in line with the actual learning task, as well as integrate side-information, such as higher order moments, directly into the training process...
The Citizens Broadband Radio Service (CBRS) band has three tiers of users. The General Authorized Access (GAA) has the lowest priority and operates without a license. A Spectrum Access System (SAS) is responsible for managing spectrum among the users. The Federal Communications Commission (FCC) rules specify that GAA users be allocated resources in a fair manner, but the method to do so is left open...
This poster presents a hardware/software solution, called On-The-Go Switch (OTGS), enabling a smartphone to control the connection state of a USB-attached device. Through an example, we show how OTGS can reduce the energy consumption of portable spectrum sensing platform utilizing low-cost Software Defined Radio. We show that OTGS can reduce the energy consumption by 47%, compared to a baseline, which...
We present a framework for including model uncertainty into Monte Carlo simulations used for estimating interference risks. Through case studies based on a proof of concept implementation using SEAMCAT, we also illustrate how large impact model uncertainties can have on estimated interference probabilities. We argue that especially propagation model related uncertainties can be severe, and should...
Unlicensed access to spectrum has the potential to increase competition in spectrum access and encourage innovations by lowering barriers to entry. However, early provider offering service in such a band might use customer contracts which impose a penalty on customers for switching to other providers as a way of creating new entry barriers. Given such contracts, entrant providers must weigh the likelihood...
The paradigm of shared spectrum allows secondary devices to opportunistically access spectrum bands underutilized by primary owners. As the first step, the FCC targeted sharing the 3.5 GHz (3550–3700 MHz) federal spectrum with commercial systems. The proposed rules require a Spectrum Access System to implement a three-tiered spectrum management framework, and one of its key functions is dynamic channel...
In order to assist dynamic spectrum access in the cognitive radio framework, a precise real-time identification of the signals sent by either the primary or secondary users should be necessary. Orthogonal frequency-division multiplexing (OFDM) signals with and without DFT precoding are commonly adopted in the recent wireless communications standards. Therefore, the accurate classification of such...
This paper describes the design, experimental assessmant and Software Defined Radio (SDR) implementation of a Secondary User (SU) link for the IEEE DySPAN Challenge 2017. The objective is to successfully discern the behavior of and coexist with a Primary User (PU), whose channel access patterns vary over time. For that end, we utilize sensing, deep learning and dynamic optimization.
In this proposal, we provide details on our approach for the design of a cognitive overlay system which is implemented on a heterogeneous Software Defined Radio (SDR) platform consisting of an off-the-shelf consumer laptop and a USRP X310. To ensure high flexibility, spectral efficiency and low out-of-band radiation, we chose Filter Bank Multicarrier (FBMC) as physical layer waveform. For the cognitive...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.