Learn More
—In this paper the problem of detecting the presence of similar OFDM signals, i.e. WLAN and WiMAX signals, in an Open Spectrum scenario is faced. The identification of the channel occupancy and the signal classification are performed by using a fast detector based on a single spectral correlation function estimator and a multi-class support vector machine(More)
In this correspondence, the achievable rates of the so called “multiple-input multiple-output interference channel,” exploited by a couple of single antenna primary terminals and two antenna cognitive radios under specific interference constraints, are analyzed. In particular, by assuming perfect channel state information at the cognitive(More)
In the present contribution the problem of signal interception in a virtual MIMO scenario is considered. A possible distributed signal interception algorithm which is able to detect and discriminate between two similar OFDM signals is analyzed. Distributed and stand-alone algorithms are compared through simulations in a multipath environment and the(More)
The application of non-destructive testing and evaluation (NDT/NDE) methodologies in civil engineering has raised a growing interest during the last years because of its potential impact in several different scenarios. As a consequence, Ground Penetrating Radar (GPR) technologies have been widely adopted as an instrument for the inspection of the structural(More)
Wireless power transmission (WPT) through microwave beams represents a key technology for the long distance transfer of energy in the absence of a traditional electrical network. Its importance is demonstrated by the increasing research and industrial activities concerned with the design, manufacturing, and prototyping of efficient WPT systems. In this(More)
An analytical technique for the synthesis of planar arrays for wireless power transmission is proposed whose aim is to maximize the ratio between the power collected at the receiver to the total transmitted power. The array weights are optimized through an analytical methodology which formulates the synthesis process as a generalized eigenvalue problem. The(More)
The integration of smart antennas in wireless sensor networks is a challenging and very attractive technical solution to improve the system capacity, the quality of service, and the power control. In this paper, some benefits coming from such an integration are experimentally assessed dealing with a set of test scenarios. Finally, some conclusions are(More)