Nguyen Van Cuong

Monitoring and controlling devices system by GPRS on FPGA platform

From our ideas and the demand to control and to monitor household appliances (eg lights, fans, pumps, shower, etc) anywhere by using mobile handset through GSM technology, this paper is aimed to present a new idea of using the embedded system on FPGA platform with the microprocessor MicroBlaze and the real time operating system FreeRTOS to control and to monitor household appliances through GPRS and using the PIR sensor to carry out monitoring break-in. Due to the strict requirements of the time constraints, the use of resources and the importance of scheduling, real-time operating system (TRTOS) plays a very important role in the development of embedded systems.

A framework for secure remote updating of bitstream on runtime reconfigurable embedded platforms

With the current evolution in run-time reconfigurable computing, runtime reconfigurable platforms are becoming increasingly viable. End users can download an updated version of a bitstream over the Internet and reconfigure the hardware platform partially without affecting the rest of the system like downloading and installing software. However, remote downloading and upgrading of bitstream is vulnerable to spoofing and replay attacks. This paper presents a framework to guarantee a secure and efficient remote updating of FPGA bitstream on runtime reconfigurable embedded platforms which consist of an embedded microprocessor and a runtime reconfigurable FPGA hardware. The framework addresses different issues including bitstream management, compression, encryption and authentication. A prototype system based on Xilinx Spartan-6 LX45 FPGA Altys board is used as a proof of concept for our framework.

Enhancement and FPGA implementation of ANFIS algorithm in digital image processing

Adaptive Neuro Fuzzy Inference System (ANFIS) is a kind of neuro-fuzzy model, combining fuzzy system and neural network. It incorporates the human-like reasoning style of fuzzy systems through the use of fuzzy sets and a linguistic model consisting of a set of IF-THEN fuzzy rules. Based on Takagi-Sugeno Fuzzy Inference System, ANFIS focus on the accuracy and it is widely used in control and identification systems. However, when the fuzzy rule base is large, it proved to be slow because of the computation time. This paper introduces an enhanced algorithm, implemented on FPGA platform, to speed up the standard ANFIS algorithm in digital image processing.

Dynamic mapping of quality adjustable applications on NoC-based reconfigurable platforms

NoC based SoC FPGAs are a promising technology for high performance embedded systems because they provide a good balance between performance, rapid time to market, cost and flexibility. The reconfigurability aspect of FPGAs allows FPGA platforms to adapt themselves to the various processing requirement of applications. On the other hand, many applications are designed in such a way that their quality level can be adjusted to match the processing capability of hardware platforms. In this paper, we consider the problem of mapping quality adjustable applications onto heterogeneous NoC-based dynamically reconfigurable platforms under resource constraints while ensuring the maximum overall quality of service (QoS) of the applications. The parameters such as resource usage efficiency, processing time, communication overhead and quality of service will be considered in the mapping. Simulation results show that the proposed solution is very flexible and can accommodate more applications than existing solutions on the same platform.

A protocol for secure remote update of run-time partially reconfigurable systems based on FPGA

Remote updating for hardware system via the Internet is an advantage of FPGA-based devices. Whereby the system designer or user can change or renew a part of his equipment. However, the problem of communication in an untrusted environment can lead to significant damage: The risks (cloning, reverse engineering) for the Intellectual Property (IP) of designers; damaging devices (from malicious) or losing the properties of the user (by trojan horse). In this paper, we proposed a safe and flexible protocol for secure remote update of run-time partial reconfigurable systems. Our proposed protocol can prevent cloning, reverse engineering, downgrade of the system and can protect key and license of IP cores. We have also proposed a new method to verify keys by using a SHA hash function.