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Application portability between different multicore architecture-parallel programming paradigm/tool pairs is a big problem nowadays leading often to a complete rewrite of an application when switching from an architecture-paradigm pair to another. This is caused by a wide variety of architectural properties requiring different optimization techniques for different architectures, typically hiding the...
Distributed antenna systems (DASs) have been proposed for use in high-data-rate wireless communications. Connecting the central unit to remote antenna units, radio over fiber (RoF) links become essential parts of the DAS. One of the major problems in the RoF links is the nonlinear distortion experienced in its optoelectronic devices. This paper considers the adaptive compensation of the nonlinear...
In multiple-input multiple-output (MIMO) systems, the requirement for orthogonal pilot sets grows linearly with the number of transmit antennas. The channel estimators based on multiplexed pilot subcarriers used in the current systems such as WiMAX and LTE consume bandwidth allocated for data transmission. An alternative approach based on superimposing the pilots onto the data subcarriers offers a...
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