Radio frequency Spectrum management

Smart Radio Spectrum Management for Cognitive Radio

Today’s wireless networks are characterized by fixed spectrum assignment policy. The limited available spectrum and the inefficiency in the spectrum usage necessitate a new communication paradigm to exploit the existing wireless spectrum opportunistically. Cognitive radio is a paradigm for wireless communication in which either a network or a wireless node changes its transmission or reception ...

Cognitive Radio defying Spectrum Management

This set of contributions is addressing the impact of cognitive radio on the regime of radio spectrum governance. To avoid harmful interference the current paradigm of spectrum governance uses the principle of separation. Thereby each application and user or user group is being assigned a specific part of the spectrum, using the dimensions of frequency, time and location. Cognitive radio, a spe...

Wideband versatile radio-frequency spectrum analyzer.

Operation of a wideband, versatile optical spectrum analyzer for radio-frequency (RF) signals is demonstrated. The device is based on spectral hole burning (SHB). The demonstration features 2.3-GHz instantaneous bandwidth, 500-kHz resolution, and a 32-dB dynamic range. A true RF signal, transferred to the optical carrier with the help of a Mach-Zehnder modulator, is analyzed with optical carrie...

Spectrum Management in Cognitive Radio Wireless Networks

An Enhanced Spectral Analysis Tool (sat) for Radio Frequency Interference Analysis and Spectrum Management

A microcomputer based sofiwwre for analysis of radio frequency intetierence is presented in this paper. The latest version 5 of the spectral analysis tool (SAT) contains numerous features essential for effective spectrum management. Included in SAT windows menu are editors of signal/interference, filters, spikes, power spectrum plots, calculators for spectral power, telecommunication link budge...