The high Peak to Average Power Ratio (PAPR) of Orthogonal Frequency Division Multiplexing (OFDM) and MIMO-OFDM systems reduces the system efficiency. In this paper, an extension of Tone Reservation (TR) method is introduced for PAPR reduction in Space Frequency Block Coded OFDM (SFBC-OFDM) systems. The proposed algorithm is based on a time domain kernel which is added to the signal of the anten...

complies with the regulations of the University and meets the accepted standards with respect to originality and quality. In this thesis, we investigate different types of robust schemes for transmission of medical images with concealed patient information as a watermark. In these schemes, spatial domain digital watermarking technique is adapted to embed the patient information as a watermark i...

that cardiac decompensation can be avoided in MCD-deficient patients. Finally, by analogy with fatty acid oxidation disorders such as medium-chain acyl-CoA dehydrogenase deficiency (13), one may conclude that knowledge of the diagnosis will improve outcome because early intervention is then possible in catabolic episodes that otherwise may lead to metabolic derange-ment. It therefore seems reas...

n engl j med 357;14 www.nejm.org october 4, 2007 1365 decade. They’ve been able to do so by offering greater speed and efficiency in conducting clinical trials than academic groups can, but questions have been raised about their qualifications, ethics, accountability, and degree of independence from their pharmaceutical-industry clients. Annual CRO-industry revenues have increased from about $7...

Anxiety is one of the most common childhood disorders. The prevalence anxiety during lifetime has been estimated to be about 29 per cent and average age its onset 11 years. COVID-19 pandemic had a significant impact on public mental health. Therefore, monitoring oversight population health crises such as an immediate priority. A pre-experimental research design was used collect data from 100 Sc...

In this article, we propose and assess an iterative pilot-data-aided channel estimation scheme for space frequency block coding relay-assisted OFDM-based systems. The relay node (RN) employs the equalise-and-forward protocol, and both the base station (BS) and the RN are equipped with antenna arrays, whereas the user terminal (UT) is a single-antenna device. The channel estimation method uses t...

The deployment of small-cells within the boundaries of amacrocell is considered to be an effective solution to cope with the current trend of higher data rates and improved system capacity. In the current heterogeneous configuration with the mass deployment of small-cells, it is preferred that these two cell types will coexist over the same spectrum, because acquiring additional spectrum licens...