A novel topology multi-stage noise-shaping (MASH) delta-sigma modulator is proposed for 20-km digital mobile fronthaul (MFH) in this article. In the MASH structure, a newly designed feedback unit combined with traditional fourth-order sturdy structure to enhance capacity. The detailed comparison between conventional single (SDSM) and new presented 512/1024 quadrature amplitude modulation (QAM) ...

In this paper, the performance of the portable OpenMP compiler on SDSM JIAJIA is analyzed using SPEC OMPM2001 benchmark. The overheads of parallel execution have been investigated from the aspects of thread management and task schedule, memory access and synchronization. To improve the performance, the page placement and data privatization techniques have been implemented for the optimization o...

Abstract Global efforts to upgrade water, drainage, and sanitation services are hampered by hydrometeorological data-scarcity plus uncertainty about climate change. Intensity–duration–frequency (IDF) tables used routinely design water infrastructure so offer an entry point for adapting engineering standards. This paper begins with a novel procedure guiding downscaling predictor variable selecti...

Emerging system-area networks provide a variety of features that can dramatically reduce network communication overhead. Such features include reduced latency, protected remote memory access, cheap broadcast, and ordering guarantees. In this paper, we evaluate the impact of these features on the implementation of Software Distributed Shared Memory (SDSM), and on the Cashmere system in particula...

Many impact studies require climate change information at a finer resolution than that provided by Global Climate Models (GCMs). In the last 10 years, downscaling techniques, both dynamical (i.e. Regional Climate Model) and statistical methods, have been developed to obtain fine resolution climate change scenarios. In this study, an automated statistical downscaling (ASD) regression-based appro...