Spread spectrum (SS) and multicarrier modulation (MCM) techniques are recognized as
potential candidates for the design of underlay and interweave cognitive radio (CR) systems …

Orthogonal frequency-division multiplexing (OFDM) backscatter communication promises to
enable ultralow-power wireless devices that are robust to time-varying multipath channels …

Cooperative spectrum sensing has recently become an important research topic for
cognitive radio systems because it solves the hidden terminal problem in single-user …

Importance of achieving high performance Fourier transforms for Cognitive Radio
applications can not be over-emphasized. This includes signal detection in the presence of …

Fast Fourier Transform (FFT) is an important algorithm in many digital signal processing
applications, and it often requires parallel implementation for high throughput. In this paper …

This paper presents a novel energy based multi-resolution spectrum sensing technique. By
applying an efficient flexible FFT, the proposed method can focus on a small part of the …

(57) ABSTRACT A wireless communication system receiver receives and pro cesses a
signal comprising at least two component carriers carrying data scheduled to the receiver …

The fast Fourier transform (FFT), a spectral method that computes the discrete Fourier
transform and its inverse, pervades many applications in digital signal processing, such as …

An energy-efficient fast Fourier transform (FFT) algorithm for cognitive radio communication
systems uses a homogeneous multiprocessor system on chip. The algorithm allows for …

In cognitive radio techniques, OFDM is usually regarded as the physical layer candidate.
However, the weaknesses of the OFDM technique, ie, using plain FFT for spectral analysis …