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We investigate a coordinated scheduling problem in a two-cell network where in each cell, two users are scheduled for simultaneous communication. Zero-forcing (ZF) beamforming is employed at each base station to suppress both intra- and inter-cell interference. The coordinated scheduling/beamforming problem is formulated as finding proper scheduling decisions and hence beamformers across the network...
QR Decomposition (QRD) is a typical matrix decomposition algorithm that shares many common features with other algorithms such as LU and Cholesky decomposition. The principle can be realized in a large number of valid processing sequences that differ significantly in the number of memory accesses and computations, and hence, the overall implementation energy. With modern low power embedded processors...
In recent years, many SDR base band processors have been proposed to meet the high performance and programmability requirement for emerging wireless communications. To be able to support hundreds of Mbps or even Gbps wireless communications, such SDR base band processors often have massive parallel computation capability. This promising processing capability may also be exploited for other types of...
With the soaring development cost of deep sub-micron silicon and the fast-growing diversity in wireless communications, software defined baseband becomes more and more important for handheld devices. However, most software defined receivers reported in previous literatures are still far away from fulfilling the requirement of emerging wireless standards such as the LTE-Advanced. The category-E User...
Advanced handheld applications are demanding for implementations of higher energy efficiency and higher performance. In typical implementations, the finite precision information is only known after fixed-point refinement, once the data-flow has been frozen. Instead, in this paper we suggest the propagation of finite precision information to drive data-flow transformations in order to achieve a higher...
The number of High performance computing (HPC) clusters is rising. They are playing an important role in grid computational. As more users and projects rely on HPC clusters, high availability are requirements for a fast growing adoption and use. In this paper, we are developing software that monitors HPC clusters while users' batch jobs execute, and actively performs corrective actions to handle routine...
High performance computing (HPC) facilities such as HPC clusters, as building blocks of Grid computing, are playing an important role in computational Grid. HPC monitoring in HPC cluster systems presents an important challenge because HPC cluster environments are volatile, heterogeneous, not reliable and are managed by different middleware and systems. In this paper, we propose an HPC cluster monitoring...
Emerging SDR baseband platforms are usually based on multiple DLP+ILP processors with massive parallelism. Although these platforms would theoretically enable advanced SDR signal processing, existing work implemented basic systems and simple algorithms. Importantly, MIMO is not fully supported in most implementations. Implemented MIMO but with a simple linear detector. Our work explores the feasibility...
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