Abstract In recent years, Cognitive Radio (CR) is found to be a viable solution to meet the
next generation spectrum utilization challenges. The basic requirement for CR is spectrum …

Wideband cognitive radios (CRs) receive signals from multiple transmitters simultaneously
to increase spectrum utilization. Processing a wideband spectrum is challenging due to …

Multistandard radios typically employ digital filter banks (FBs) for channelization of
wideband input signals consisting of multiple radio channels corresponding to different …

The inefficient utilization of the radio spectrum leads to the invention of new techniques that
help those users with no access or license to use the spectrum, whenever spectrum hole or …

It has been shown in literature that the coefficient decimation (CD) techniques can be
efficiently used to realize low-complexity finite impulse response (FIR) filters with flexible …

Reconfigurability with extremely low hardware complexity is the demanding requirement of
today's 5G world. The use of Farrow structure-based design of variable bandwidth (VBW) …

In a nonideal PLL circuit, leakage of the reference signal into the control line produces
spurious tones. When the distorted PLL signal is used as a sampling clock to an analog-to …

Spectrum sensing has been identified as an essential enabling functionality for cognitive
radio (CR) systems to guarantee that CR users could share the spectrum resource with …

Cognitive Radio (CR) is generally a wireless communication system that has the ability to
improve the network's system-capacity. Since, the white space or temporally unused …

Multi-standard channel adaptation is a critical function in cognitive radio handsets which
involves the transmission/reception of individual frequency channels of multiple wireless …