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Efficient and robust wireless video delivery is an enabling technology for various applications. The existing wireless video transmission scheme has the cliff effect and it cann't gracefully adapt to channel variations. In this paper, we introduce a pseudo-analog wireless video transmission improvements and design in the hardware. Comparing with the traditional transmission, the linear processing...
The increasing use of digital signal processors (DSPs) in wireless communications and signal processing necessitates the optimization of compilers to support special hardware features. In this paper, we propose a compiler transformation method for zero overhead loop (ZOL). It supports very long instruction word (VLIW), internal branches and the loops whose iterative times are known at runtime and...
In order to improve energy efficiency of computation-intensive workloads in Cloud Radio Access Network (C-RAN), virtualized hardware accelerators (HA) are proposed in this paper. In C-RAN architecture, the base stations (BS) are running in the virtual machines. Virtualization mechanism of HA makes each BS feel like owning a HA exclusively, but actually BSs sharing the HAs. To tackle the problem of...
Xen is a powerful virtualization solution which enables multiple virtual machines to run in a single physical machine isolatedly. Since the hardware resources of a physical machine (e.g., the CPU) are limited and they have to be shared by multiple virtual machines, the performance of virtual machines might be degraded. How to allocate the underlying hardware resources to virtual machines appropriately...
As more and more large firms expect to migrate their legacy IT systems to cloud computing environment, private cloud has been widely adopted as a suitable cloud service deployment model. In contrast to the traditional IT system implementation, private cloud service deployment in the large company has greatly changed the production and delivery of the IT system. Based on the service dominant logic...
Seamless rate adaptation (SRA) is one of the promising rate adaptive schemes for wireless communication system. However, the high complexity of decoding hinders its application. We propose an optimized Application-specific integrated circuit (ASIC) design and implementation for SRA decoder in this paper. In order to balance speed and resource consumption, a partial parallel architecture is used in...
In order to overcome the limitation of traditional data-acquisition card based on PCI bus, a novel data-acquisition system featuring high-speed and high-accuracy is implemented based on real-time industrial internet technology EtherCAT(Ethernet for Control Automation Technology). Without the requirement of a dedicated hardware card of IPC(Industrial PC), such kind of data acquisition system can be...
Recently, IPTV service has attracted significant attentions to both of the ISPs and normal users,and the quality of experience (QoE) from the users point of view is the most improtant evaluation for IPTV service provider. A reasonable peer selection mechanism of P2P based IPTV service can provide the end-users with a better QoE in a limited network resource environment. Therefore, the cross-layer...
Based on the ZigBee wireless network, a park lighting control and child location tracking system is designed in this paper. Considering that there may be a number of children that needs to be tracked concurrently, distributed localization is needed, so an improved RSSI-based algorithm is introduced in this paper. As a goal of our system, the new method, unlike commercial digital-hardware-block based...
A new design of dual-cored embedded video vehicular detection based on ARM processor S3C2410A and TMS320C6211 DSP is presented. It lays emphasis on the design of communication interface between ARM and DSP units, including hardware implementation and software program. Exploiting ARM-Linux as embedded operation system, ARM unit communicates with DSP unit in real time through the host port interface...
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