For a cellular communication network, the loss in up-link bandwidth-efficiency resulting from power equalization is considered. Here power equalization refers to the operation of adjusting the transmit power of mobile units in such a way that the received power is the same for all units whereas bandwidth-efficiency is measured in terms of sum-rate per cell divided by the total system bandwidth....

Recently, overlap frequency-domain equalization (FDE) based on minimum mean square error (MMSE) criterion which requires no guard interval (GI) insertion was proposed for signal transmission using multi-code direct sequence code division multiple access (DS-CDMA) in a frequency-selective fading channel. Another promising equalization technique is time-domain sliding-window chip equalization (SW...

We consider the revision of a previously derived theoretical framework for the robustness of multi-channel sound equalization in reverberant environments when non-exact equalizers are used. Using results from image model simulations, we demonstrate the degradation in performance of an equalization system as the sound source moves from its nominal position inside the enclosure. We show that perf...

This paper presents a luminosity conserving and contrast enhancing histogram equalization method for color images. The histogram equalization is one of the ordinary methods employed for enhancing contrast in TV and images for consumer electronics where unwanted subjective deterioration are frequently occur. Although there have been many solutions to overcome the drawback of histogram equalizati...

Filter Bank Multicarrier (FBMC) systems are a class of multicarrier modulation schemes for high speed wireless communication. These systems are known for their low adjacent channel leakage. In this paper we focus on the problem of channel equalization for FBMC systems. Most solutions in the literature use a per subcarrier equalization suffering from an error floor at high signal-to-noise ratios...

Low complexity equalization with LSRQ and GMRES algorithm is compared with traditional equalization methods. As the next generation technologies like LTE and WiMax have a large number of subcarriers the traditional equalization methods like MF, ZF, MMSE, VBLAST, and SAGE which require matrix inversion become highly complex in time and consume a lot of time to equalize the received signal. An al...

The recurrent canonical piecewise linear (RCPL) network is applied to nonlinear blind equalization by generalizing Donoho's minimum entropy deconvolution approach. We rst study the approximation ability of the canonical piecewise linear (CPL) network and the CPL based distribution learning for blind equalization. We then generalize these conclusions to the RCPL network. We show that nonlinear b...

Two basic concepts for point-to-point transmission over multiple-input/multiple-output channels with intersymbol interference (MIMO ISI channels) are reviewed and compared. The approaches can be characterized by the way how they deal with multiuser (spatial equalization) and intersymbol interference (temporal equalization). In MIMO orthogonal frequency division multiplexing, temporal equalizati...

This paper considers the application of iterative equalization and decoding, also known as Turbo equalization, to high frequency (HF) serial-tone modems. The softin soft-out (SISO) equalizer required for this approach is based on a linear filter, since a trellis-based equalizer’s computational complexity is too large for this application. Linear equalization algorithms with SISO capability are ...

In order to respond to the technologic society expectations and satisfying the nowadays search of services who required a high spectral efficiency, emerge an interest about coherent optical systems, that allows multi-level modulation formats and digital signal processing. So, the study of performance of equalization algorithms at digital domain is essential in order to get the best solutions. T...