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Recent technologies enable electronic and RF circuits in communication devices and radar to be miniaturized and become physically smaller in size. Antenna design has been one of the key limiting constraints to the development of small communication terminals and also in meeting next generation and radar requirements. Multiple antenna technologies (MATs) have gained much attention in the last few years...
Modern radio communication systems have to provide higher and higher data rates. Multiple antenna technologies (MATs) have gained much attention in the last few years because of the huge gain. MATs can enhance the communication reliability and the channel capacity levels. Furthermore, multiple antenna systems can have a big contribution to reduce the interference both in the uplink and the downlink...
Modern radio communication systems have to provide higher and higher data rates. As conventional methods like using more bandwidth or higher order modulation types are limited. Multiple antenna systems or Multiple Input, Multiple Output (MIMO) gives a significant enhancement to data rate and channel capacity. The interest in MIMO antenna systems has exploded over the last years because of their potential...
Aim: Cirrhosis represents a common histological pathway for a wide variety of chronic liver diseases. Hepatitis C virus (HCV) is the most important cause of liver cirrhosis in Egypt. Although cirrhosis has been regarded as a relative contraindication for laparoscopic cholecystectomy (LC) as a result of bleeding complications and subsequent liver failure, several reports support the safety of LC in...
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