In this paper, a new reconfigurable processor for channel estimation in Orthogonal Frequency Division Multiplexing systems (OFDM) is proposed. The channel estimation algorithms are discussed and compared following the computational complexity criteria and the signal performances. Some representative algorithms are chosen to illustrate the different techniques of channel estimation, and are implemented. The processor CERA (Channel Estimation Reconfigurable Architecture) offers a wide flexibility and can manage the arithmetic operations of the channel estimation algorithms, in addition to those of other functionalities of the baseband OFDM system. It is compared, in terms of silicon area and power consumption, with other dedicated units in order to estimate the processor flexibility overhead.
Silencer selection has long been a burdensome, and occasionally iterative process. It is typically done based on tested sound attenuation values obtained using large facilities and costly equipment - making the process time-consuming and unsustainable. Fortunately, Finite Element Analysis
(FEA) continues to become a more viable intermediary step between design and construction. COMSOL Multiphysics(r) is an FEA solver and simulation software. COMSOL's acoustics module can determine full octave decibel values of Transmission Loss.This paper goes through parameters and model setup
in the COMSOL environment as well as the practicality and convenience of using such a software. It also investigates the reliability of such methods of acoustic analysis compared to empirical data, where it may fall short, and identifies areas in need of more analysis.
Embedded platforms are projected to integrate hundreds of cores in the near future, and expanding the interconnection network remains a key challenge. We propose SNet, a new Scalable NETwork paradigm that extends the NoCs area to include a software/hardware dynamic routing mechanism. To design routing pathways among communicating processes, it uses a distributed, adaptive, non-supervised routing method based on the ACO algorithm (Ant Colony Optimization). A small footprint hardware unit called DMC speeds up data transfer (Direct Management of Communications). SNet has the benefit of being extremely versatile, allowing for the creation of a broad range of routing topologies to meet the needs of various applications. We provide the DMC module in this work and assess SNet performance by executing a large number of test cases.
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