Pengcheng Liu

Experience

• 

  Bright Oceans Inter-Telecom Corporation

  Jun 2006 - Sept 2007

  Student Intern (Telecommunication Software)

  Worked on the development of a 𝐌𝐮𝐥𝐭𝐢-𝐓𝐞𝐜𝐡𝐧𝐨𝐥𝐨𝐠𝐲 𝐍𝐞𝐭𝐰𝐨𝐫𝐤 𝐌𝐚𝐧𝐚𝐠𝐞𝐦𝐞𝐧𝐭 𝐒𝐲𝐬𝐭𝐞𝐦 (𝐍𝐌𝐒), focusing on implementing optical transport manager adapters for Ericsson and Nokia platforms. Maintained and optimised the experimental network environment using 𝐕𝐋𝐀𝐍, 𝐑𝐈𝐏, and 𝐎𝐒𝐏𝐅 protocols to support integration testing and performance evaluation. 𝑲𝒆𝒚 𝑹𝒆𝒔𝒑𝒐𝒏𝒔𝒊𝒃𝒊𝒍𝒊𝒕𝒊𝒆𝒔: • Developed and tested the 𝐑𝐞𝐦𝐨𝐭𝐞 𝐓𝐫𝐚𝐧𝐬𝐩𝐨𝐫𝐭 𝐔𝐧𝐢𝐭 (𝐑𝐓𝐔) for protocol transfer integration into a comprehensive network management system, ensuring compliance with the 𝐓𝐌𝐅𝟖𝟏𝟒 𝐬𝐭𝐚𝐧𝐝𝐚𝐫𝐝 for reliable and efficient data communication.• Designed and implemented a 𝐍𝐨𝐫𝐭𝐡 𝐈𝐧𝐭𝐞𝐫𝐟𝐚𝐜𝐞 𝐭𝐞𝐬𝐭 𝐭𝐨𝐨𝐥 for an 𝐄𝐥𝐞𝐦𝐞𝐧𝐭 𝐌𝐚𝐧𝐚𝐠𝐞𝐦𝐞𝐧𝐭 𝐒𝐲𝐬𝐭𝐞𝐦 (𝐄𝐌𝐒),integrating multiple technologies including 𝐂𝐎𝐑𝐁𝐀, 𝐬𝐨𝐜𝐤𝐞𝐭 𝐩𝐫𝐨𝐠𝐫𝐚𝐦𝐦𝐢𝐧𝐠 and𝐝𝐚𝐭𝐚𝐛𝐚𝐬𝐞 𝐢𝐧𝐭𝐞𝐫𝐚𝐜𝐭𝐢𝐨𝐧𝐬 toenable seamless performance evaluation and integration testing. Show less

• 

  China Potevio Institute of Technology Co., Ltd

  Jul 2009 - Jun 2013

  Software Engineer (Telecommunications)

  Worked on the development of the 𝟑𝐆 𝐑𝐍𝐂 (𝐑𝐚𝐝𝐢𝐨 𝐍𝐞𝐭𝐰𝐨𝐫𝐤 𝐂𝐨𝐧𝐭𝐫𝐨𝐥𝐥𝐞𝐫) 𝐇𝐢𝐠𝐡-𝐀𝐯𝐚𝐢𝐥𝐚𝐛𝐢𝐥𝐢𝐭𝐲 𝐏𝐥𝐚𝐭𝐟𝐨𝐫𝐦 and 𝐋𝐓𝐄 𝐂𝐨𝐫𝐞 𝐍𝐞𝐭𝐰𝐨𝐫𝐤 𝐬𝐲𝐬𝐭𝐞𝐦𝐬. Focused on the 𝐬𝐢𝐠𝐧𝐚𝐥𝐢𝐧𝐠 𝐢𝐧𝐭𝐞𝐫𝐚𝐜𝐭𝐢𝐨𝐧𝐬 within the 𝐄𝐯𝐨𝐥𝐯𝐞𝐝 𝐏𝐚𝐜𝐤𝐞𝐭 𝐂𝐨𝐫𝐞 (𝐄𝐏𝐂) 𝐚𝐧𝐝 𝐋𝐚𝐲𝐞𝐫 𝟐 𝐩𝐫𝐨𝐭𝐨𝐜𝐨𝐥 𝐢𝐦𝐩𝐥𝐞𝐦𝐞𝐧𝐭𝐚𝐭𝐢𝐨𝐧. Evaluated EPC performance by simulating eNodeB behaviour under high-load scenarios. Maintained and optimised the experimental network environment, including VLAN and EIGRP configurations, to support system testing and validation.𝑲𝒆𝒚 𝑹𝒆𝒔𝒑𝒐𝒏𝒔𝒊𝒃𝒊𝒍𝒊𝒕𝒊𝒆𝒔: • Developed a 𝐡𝐢𝐠𝐡-𝐚𝐯𝐚𝐢𝐥𝐚𝐛𝐢𝐥𝐢𝐭𝐲 𝐩𝐥𝐚𝐭𝐟𝐨𝐫𝐦 for 𝐑𝐚𝐝𝐢𝐨 𝐍𝐞𝐭𝐰𝐨𝐫𝐤 𝐂𝐨𝐧𝐭𝐫𝐨𝐥𝐥𝐞𝐫𝐬 (𝐑𝐍𝐂) on 𝐕𝐱𝐖𝐨𝐫𝐤𝐬, focusing on robust system performance, fault tolerance and reliability. • Developed a 𝐑𝐚𝐝𝐢𝐨 𝐒𝐢𝐠𝐧𝐚𝐥𝐢𝐧𝐠 𝐂𝐚𝐥𝐥 𝐓𝐫𝐚𝐜𝐞 system on 𝐖𝐢𝐧𝐝 𝐑𝐢𝐯𝐞𝐫 𝐋𝐢𝐧𝐮𝐱, enhancing real-time network monitoring, analysis, and troubleshooting capabilities. • Built 𝐞𝐋𝐨𝐚𝐝𝐁𝐨𝐱, a custom 𝐄𝐏𝐂 𝐩𝐞𝐫𝐟𝐨𝐫𝐦𝐚𝐧𝐜𝐞 𝐭𝐞𝐬𝐭𝐢𝐧𝐠 𝐭𝐨𝐨𝐥 capable of simulating large-scale traffic from eNodeBs and Application Servers, enabling rigorous stress testing of 4G network infrastructure. • Designed and validated the 𝐓𝐃-𝐋𝐓𝐄 𝐓𝐫𝐮𝐧𝐤𝐞𝐝 𝐑𝐚𝐝𝐢𝐨 𝐒𝐲𝐬𝐭𝐞𝐦 network architecture for the Beijing Data Network, achieving high-efficiency, low-latency communication performance. • Customised and maintained an 𝐒𝐈𝐏 𝐩𝐫𝐨𝐭𝐨𝐜𝐨𝐥 𝐬𝐭𝐚𝐜𝐤 using 𝐎𝐒𝐈𝐏, ensuring seamless integration with a proprietary Switch Control Centre to optimize call signalling reliability and system interoperability. Show less

• 

  Dublin City University

  Dec 2014 - Nov 2021

  𝐏𝐚𝐭𝐡𝐟𝐢𝐧𝐝𝐞𝐫 (https://pathfinderpuck.com) addresses the critical challenge of firefighter 𝐧𝐚𝐯𝐢𝐠𝐚𝐭𝐢𝐨𝐧 in burning buildings under near-zero visibility conditions. The solution involves the 𝐫𝐞𝐚𝐥-𝐭𝐢𝐦𝐞 deployment of bespoke IoT infrastructure within the building, forming a self-organising wireless mesh network operating in the 𝐒𝐮𝐛-𝟏 𝐆𝐇𝐳 𝐛𝐚𝐧𝐝. A key objective of the system is to enable communication between the locally deployed network and the wider internet, thereby extending its operational scope to cloud-based services and remote monitoring.𝑲𝒆𝒚 𝑹𝒆𝒔𝒑𝒐𝒏𝒔𝒊𝒃𝒊𝒍𝒊𝒕𝒊𝒆𝒔: • Designed and optimised 𝐒𝐮𝐛-𝟏 𝐆𝐡𝐳 analogue front-end circuits using 𝐄𝐚𝐠𝐥𝐞, including impedance matching networks and balun configurations, to maximise transmission efficiency. • Developed a 𝐒𝐮𝐛-𝟏 𝐦𝐞𝐬𝐡 𝐧𝐞𝐭𝐰𝐨𝐫𝐤 leveraging 𝐎𝐩𝐞𝐧𝐭𝐡𝐫𝐞𝐚𝐝, enabling 𝐥𝐨𝐰-𝐩𝐨𝐰𝐞𝐫 wireless communications. • Conducted 𝐚𝐧𝐭𝐞𝐧𝐧𝐚 𝐬𝐢𝐦𝐮𝐥𝐚𝐭𝐢𝐨𝐧𝐬 𝐚𝐧𝐝 𝐞𝐯𝐚𝐥𝐮𝐚𝐭𝐢𝐨𝐧𝐬 (FPC Dipole, PCB inverted-F, etc.) using HFSS. • Built comprehensive 𝐭𝐞𝐬𝐭 𝐭𝐨𝐨𝐥 𝐬𝐮𝐢𝐭𝐞𝐬 (including Wireshark Plugin and Mesh Network Topology Monitor) for realtime performance analysis and troubleshooting of mesh networking systems. • Engineered 𝐔𝐥𝐭𝐫𝐚-𝐰𝐢𝐝𝐞𝐛𝐚𝐧𝐝 (𝐔𝐖𝐁) 𝐥𝐨𝐜𝐚𝐥𝐢𝐳𝐚𝐭𝐢𝐨𝐧 𝐬𝐨𝐥𝐮𝐭𝐢𝐨𝐧𝐬, implementing 𝐓𝐰𝐨-𝐖𝐚𝐲 𝐑𝐚𝐧𝐠𝐢𝐧𝐠 (𝐓𝐖𝐑) and 𝐓𝐢𝐦𝐞 𝐃𝐢𝐟𝐟𝐞𝐫𝐞𝐧𝐜𝐞 𝐨𝐟 𝐀𝐫𝐫𝐢𝐯𝐚𝐥 (𝐓𝐃𝐨𝐀) 𝐚𝐥𝐠𝐨𝐫𝐢𝐭𝐡𝐦 for high-precision proximity measurements.𝑻𝒆𝒄𝒉𝒏𝒐𝒍𝒐𝒈𝒊𝒆𝒔: • TI CC2650, TI CC1352, Qorvo DW1000, STM32F ARM, • Raspberry Pi 4 (Linux), • Eagle, HFSS, ADS, Matlab, • Openthread mesh network, • C/C++/Java. Show less 𝐈𝐍𝐏𝐔𝐓(I𝑛-𝑁e𝑡w𝑜r𝑘 𝑃r𝑜g𝑟a𝑚m𝑎b𝑖l𝑖t𝑦 𝑓o𝑟 𝑁e𝑥t-G𝑒n𝑒r𝑎t𝑖o𝑛 𝑃e𝑟s𝑜n𝑎l C𝑙o𝑢d S𝑒r𝑣i𝑐e𝑠) focuses on designing a 𝐧𝐨𝐯𝐞𝐥 𝐢𝐧𝐟𝐫𝐚𝐬𝐭𝐫𝐮𝐜𝐭𝐮𝐫𝐞 and paradigm to support Future Internet personal cloud services with enhanced scalability, sustainability, and innovative added-value capabilities. A key objective of the project is to ensure 𝐞𝐧𝐞𝐫𝐠𝐲 𝐞𝐟𝐟𝐢𝐜𝐢𝐞𝐧𝐜𝐲 and 𝐬𝐮𝐬𝐭𝐚𝐢𝐧𝐚𝐛𝐢𝐥𝐢𝐭𝐲 of the proposed architecture, aligning with the goals of 𝐠𝐫𝐞𝐞𝐧 𝐜𝐨𝐦𝐩𝐮𝐭𝐢𝐧𝐠 and 𝐧𝐞𝐱𝐭-𝐠𝐞𝐧𝐞𝐫𝐚𝐭𝐢𝐨𝐧 network infrastructure.𝑲𝒆𝒚 𝑹𝒆𝒔𝒑𝒐𝒏𝒔𝒊𝒃𝒊𝒍𝒊𝒕𝒊𝒆𝒔: • Developed a 𝐡𝐢𝐠𝐡-𝐬𝐩𝐞𝐞𝐝 𝐒𝐃𝐍 𝐬𝐰𝐢𝐭𝐜𝐡 (40Gbps) using 𝐅𝐏𝐆𝐀 platform, implementing the 𝐝𝐚𝐭𝐚 𝐩𝐥𝐚𝐧𝐞 on the 𝐏𝐋 and the 𝐜𝐨𝐧𝐭𝐫𝐨𝐥 𝐩𝐥𝐚𝐧𝐞 on the 𝐏𝐒 to achieve 𝐥𝐨𝐰-𝐥𝐚𝐭𝐞𝐧𝐜𝐲 and 𝐡𝐢𝐠𝐡-𝐭𝐡𝐫𝐨𝐮𝐠𝐡𝐩𝐮𝐭 performance. • Analysed and enhanced PLL stability, integrating 𝐝𝐲𝐧𝐚𝐦𝐢𝐜 𝐟𝐫𝐞𝐪𝐮𝐞𝐧𝐜𝐲 𝐬𝐜𝐚𝐥𝐢𝐧𝐠 into the FPGA switch design to optimize energy efficiency without compromising system reliability. • Designed and implemented an 𝐅𝐏𝐆𝐀-𝐛𝐚𝐬𝐞𝐝 𝐜𝐢𝐩𝐡𝐞𝐫 𝐞𝐧𝐠𝐢𝐧𝐞 to provide 𝐡𝐚𝐫𝐝𝐰𝐚𝐫𝐞-𝐚𝐜𝐜𝐞𝐥𝐞𝐫𝐚𝐭𝐞𝐝 𝐬𝐞𝐜𝐮𝐫𝐢𝐭𝐲 𝐬𝐞𝐫𝐯𝐢𝐜𝐞𝐬, ensuring secure and efficient data handling. • Researched and developed 𝐞𝐧𝐞𝐫𝐠𝐲 𝐜𝐨𝐧𝐭𝐫𝐨𝐥 𝐩𝐨𝐥𝐢𝐜𝐢𝐞𝐬 𝐚𝐧𝐝 𝐚𝐥𝐠𝐨𝐫𝐢𝐭𝐡𝐦𝐬 to improve the energy efficiency of green networking devices, 𝐛𝐚𝐥𝐚𝐧𝐜𝐢𝐧𝐠 𝐩𝐞𝐫𝐟𝐨𝐫𝐦𝐚𝐧𝐜𝐞 𝐚𝐧𝐝 𝐩𝐨𝐰𝐞𝐫 𝐜𝐨𝐧𝐬𝐮𝐦𝐩𝐭𝐢𝐨𝐧. • Created an 𝐨𝐧𝐥𝐢𝐧𝐞 𝐞𝐧𝐞𝐫𝐠𝐲-𝐞𝐟𝐟𝐢𝐜𝐢𝐞𝐧𝐭 𝐫𝐞𝐬𝐨𝐮𝐫𝐜𝐞 𝐚𝐥𝐥𝐨𝐜𝐚𝐭𝐢𝐨𝐧 𝐚𝐥𝐠𝐨𝐫𝐢𝐭𝐡𝐦 to optimize 𝐜𝐨𝐦𝐩𝐮𝐭𝐢𝐧𝐠 𝐫𝐞𝐬𝐨𝐮𝐫𝐜𝐞𝐬 across 𝐜𝐥𝐨𝐮𝐝, 𝐞𝐝𝐠𝐞 and 𝐟𝐨𝐠 environments.𝑻𝒆𝒄𝒉𝒏𝒐𝒍𝒐𝒈𝒚: • Xilinx Virtex-II, Virtex-5, Zynq 7000, • Verilog, C/C++, • ISE, Modelsim, Vivado, HLS, • Cipher Algorithms • Cloud, Edge Computing, Fog Computing. Show less

  • Postdoctoral Researcher

    Sept 2018 - Nov 2021

  • Postgraduate Researcher

    Dec 2014 - Sept 2018
• 

  CommScope

  Dec 2021 - now

  Staff Software Engineer

  My role focuses on the 𝐝𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 𝐚𝐧𝐝 𝐨𝐩𝐭𝐢𝐦𝐢𝐬𝐚𝐭𝐢𝐨𝐧 of 𝐡𝐢𝐠𝐡-𝐩𝐞𝐫𝐟𝐨𝐫𝐦𝐚𝐧𝐜𝐞 embedded software systems for next-generation 𝐃𝐎𝐂𝐒𝐈𝐒 communication products. I work on 𝐚𝐜𝐜𝐞𝐥𝐞𝐫𝐚𝐭𝐢𝐧𝐠 data processing, improving system 𝐫𝐞𝐥𝐢𝐚𝐛𝐢𝐥𝐢𝐭𝐲, and 𝐞𝐧𝐡𝐚𝐧𝐜𝐢𝐧𝐠 𝐨𝐯𝐞𝐫𝐚𝐥𝐥 𝐞𝐟𝐟𝐢𝐜𝐢𝐞𝐧𝐜𝐲 across 𝐦𝐮𝐥𝐭𝐢-𝐜𝐨𝐫𝐞 𝐂𝐏𝐔, 𝐀𝐑𝐌, and 𝐃𝐒𝐏 platforms.I am involved in implementing 𝐡𝐢𝐠𝐡-𝐬𝐩𝐞𝐞𝐝 data processing, streamlining real-time data handling processes, and 𝐨𝐩𝐭𝐢𝐦𝐢𝐬𝐢𝐧𝐠 system-level software to support low-latency, high-throughput communication. Additionally, I have contributed to improving task scheduling across multi-core architectures and collaborated closely with hardware teams to integrate advanced technologies into production systems.𝑻𝒆𝒄𝒉𝒏𝒐𝒍𝒐𝒈𝒊𝒆𝒔: • x86, ARMv8, ConnX DSP• AVX512, NEON, SIMD, Vectorization, Intrinsics• DPDK• C/C++, Python, Shell, Assembly Show less