<div>Field Programmable Gate Arrays(FPGAs) were invented in the 1980s. Since then the use of FPGAs in many fields has been growing rapidly. Due to the inherent reconfiguration and relatively low development cost FPGA technology has become one of the important components in data processing and communication system.</div><div>The recent development of computing technology affects not only the software but also requires integrating and utilizing a custom logic design on a dedicated hardware platform.</div><div>In this context,this research work analyzes and compares on-chip interfaces of HW/SW communication in the Zynq-7000 all programmable SoC based platform. Several experiments were carried out to evaluate the performance of data communication between the processing system and programmable logic through general purpose(GP), high performance ports (HP) and accelerator coherency port (ACP). The results identified the most effective interfaces for transferring data from the PL to PS and store the data to DRAM memory.</div><div>One conclusion of this work is that, the selection of suitable ports depends on application requirements. For low-bandwidth application GP port is appropriate. For high-speed applications, the high performance port(HP) and Accelerator Coherency Port (ACP) are suitable and works better.The results of this thesis are useful in high performance embedded system design.<br></div><div><br></div><div><br></div>

Low Earth Orbit (LEO) satellite networks have revolutionized space internet access, offering better network performance than previous alternatives. While being the best option for space internet access, it does not yet compete with terrestrial networks in latency and bandwidth. The QUIC transport protocol was developed for Hypertext Transfer Protocol (HTTP) to reduce page load times and work better in low-bandwidth and high-loss networks than the Transmission Control Protocol (TCP). Studies have shown that QUIC performs well for small file sizes, which can be achieved by using compression. This thesis investigates whether combining QUIC as a general data transfer protocol with lossless compression enhances encrypted data transmission in a LEO satellite network. To test this, a program consisting of a client and server deployed on a LEO satellite network emulator is developed, where files with increasing sizes are compressed and sent using both QUIC and TCP in various network conditions. Results indicate that QUIC should be paired with lossless compression for file sizes up to 1MB. It should not be implemented for file sizes above 1MB in low-loss and high-bandwidth conditions, while it can be implemented in medium to poor conditions.