As modern 5G systems are being deployed, researchers question whether they are sufficient
for the oncoming decades of technological evolution. Growing numbers of interconnected …

Onboard satellite communication systems generate and manage coverage beams over the
Earth. Depending on data traffic requirements, the number of beams, side lobe levels, nulls …

The discrete cosine transform (DCT) is a central tool for image and video coding because it
can be related to the Karhunen-Loéve transform (KLT), which is the optimal transform in …

Beamforming antenna array technologies merged with Multiple-Input Multiple-Output
(MIMO) systems perform a significant part in the next generation wireless technology. The …

The ever increasing technological demand for the DFT computation poses several
challenges both to theory and hardware realization. The design of usual fast Fourier …

In this paper, we study the impact of computational complexity on the throughput limits of the
fast Fourier transform (FFT) algorithm for orthogonal frequency division multiplexing (OFDM) …

Communications at mm-wave frequencies and above rely heavily on beamforming antenna
arrays. Typically, hundreds, if not thousands, of independent antenna channels are used to …

Phased-array multibeam RF beamformers require calibration of receivers used in an array of
elements before the signals can be applied to an analog beamforming network. This article …

This paper explores new advanced quantization schemes for fast Fourier transform (FFT)
architectures. In previous works, FFT quantization has been treated theoretically or with the …

The radio spectrum is a scarce and extremely valuable resource that demands careful real-
time monitoring and dynamic resource allocation. Dynamic spectrum access (DSA) is a new …