Orthogonal frequency-division multiplexing (OFDM) is a modulation technology that has
been widely adopted in many new and emerging broadband wireless and wireline …

Wavelets have been favorably applied in almost all aspects of digital wireless
communication systems including data compression, source and channel coding, signal …

Orthogonal frequency-division multiplexing (OFDM) effectively mitigates intersymbol
interference (ISI) caused by the delay spread of wireless channels. Therefore, it has been …

Cognitive radio allows for usage of licensed frequency bands by unlicensed users.
However, these unlicensed (cognitive) users need to monitor the spectrum continuously to …

This paper presents a novel approach to develop parallel pipelined architectures for the fast
Fourier transform (FFT). A formal procedure for designing FFT architectures using folding …

Recent studies suggest that spectrum congestion is primarily due to inefficient spectrum
usage rather than spectrum availability. Dynamic spectrum access (DSA) and cognitive …

The growing demand on wireless communication systems to provide high data rates has
brought with it the need for a flexible and efficient use of the spectrum resource, which is a …

Early cellular networks used analog frequency modulation for voice communication and
frequency division multiple access to accommodate multiple users. Despite their utility, these …

To support interference-free quasi-synchronous code-division multiple-access (QS-CDMA)
communication with low spectral density profile in a cognitive radio (CR) network, it is …

For overlay cognitive radio networks (CRNs), transform domain communication system
(TDCS) has been proposed to support multiuser communications through spectrum bin …