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Next generation wireless systems have to be able to efficiently deal with fast fading environments in order to achieve high spectral efficiency. Using multiple-input multiple-output (MIMO) systems and exploiting receive diversity, their spectral efficiency can be greatly increased. Commonly, the channel is estimated via training symbols, before the data detection is carried out based on the previo
Little is known about pediatric surgical disease in resource-poor countries. This study documents the surgical care of children in central Haiti and demonstrates the influence of the 2010 earthquake on pediatric surgical delivery. METHODS: We conducted a retrospective review of operations performed at Partners in Health/Zanmi Lasante hospitals in central Haiti. RESULTS: Of 2,057 operations perfor
Small scale embedded systems and sensors have become a booming research area over the past few years. One of the primary concerns regarding such systems is small scale and efficient code to facilitate small memory footprint requirements and low power consumption. In the communications sector there has been considerable effort put into reducing the scale of protocol stacks and making them more powe
This paper describes four series of physical model experiments conducted to understand the response of the beach to headland structures. Data sets were generated for testing predictive relationships for sand transport in the presence of waves and an external current and testing of model algorithms for simulating salients and tombolos behind nearshore headland structures. The paper summarizes the e
Traditionally, Peak to Average Ratio (PAR) reduction in digital subscriber line (DSL) transmitters focuses on a digitaldomain signal, either at the output of the baseband processing block or at the input of the digital-to-analogue converter (DAC). However, analysis of a DSL transceiver shows that the power dissipation is highly dependent on the PAR at a certain node inside the line driver. Thus, i
