Multi-user multiple-input multiple-output (MU-MIMO) systems provide a significantly increased capacity and spectral efficiency by exploiting the benefits of space division multiple access (SDMA). The channel state information (CSI) at the base station (BS) is used to precode the transmit signals and to simplify the processing at the users’ terminals. If perfect CSI is available at the transmitt...

PURPOSE To investigate the expression of CDC25B, which is a member of the cyclin-dependent kinase activating phosphatase family, in diffuse astrocytoma (DA), anaplastic astrocytoma (AA), glioblastoma multiforme (GBM), pilocytic astrocytoma (PA) and reactive gliosis (RG). Also, to study the relationship of the expression level of CDC25B with clinical parameters and with p53 and Ki-67 proliferati...

INTRODUCTION Orthotopic liver transplantation (OLT) is accompanied by a significant postoperative infection risk. Immunosuppression to prevent rejection increases the susceptibility to infections, mainly by impairing the adaptive immune system. Genetic polymorphisms in the lectin complement pathway of the donor have recently been identified as important risk determinants of clinically significa...

INTRODUCTION Coagulation-free dialysis, also commonly known as "heparin-free" dialysis, can be a challenging procedure as it increases the risk of clotting the dialysis circuit. Utilizing a better saline flushing technique can lead to improved patient outcomes as well as huge financial benefits to the health institution. The purpose of this study was to compare the effectiveness of continuous s...

Accurate phasing of MRS spectra is often difficult unless time varying phase effects produced by gradient-induced eddy currents that persist during data acquisition are eliminated. This effect is particularly problematic in 1H-CSI spectra where frequency shifts produced by static field inhomogeneity and phase shifts produced by eddy currents combine. In this paper we present a method that corre...

Transmit channel side information (Tx-CSI), particularly the mean and covariance, helps to increase MIMO wireless capacity. We formulate a dynamic Tx-CSI framework, using outdated channel measurements and channel statistics, to create an effective channel mean and covariance and establish the capacity expression given such Tx-CSI. We then derive the asymptotic capacity-optimal input signal at l...

In this paper, the general wiretap channel with channel state information (CSI) at the transmitter and noiseless feedback is investigated, where the feedback is from the legitimate receiver to the transmitter, and the CSI is available at the transmitter in a causal or noncausal manner. The capacity-equivocation regions are determined for this model in both causal and noncausal cases, and the re...

This paper investigates the Diversity Multiplexing Tradeoff (DMT) of the generalized quantizeand-forward (GQF) relaying scheme over the slow fading half-duplex multiple-access relay channel (HD-MARC). The compress-and-forward (CF) scheme has been shown to achieve the optimal DMT when the channel state information (CSI) of the relay-destination link is available at the relay. However, having the...