LEO constellation GNSS (Global Navigation Satellite System) signals design and performance evaluation, advanced error control coding in data channels, spectrum spreading waveform, synchronization algorithms, link budget analysis, interference analysis,radio frequency system level design and analysis. One patent.

5G Analog-mixed-digital front-end architecture in chip design and verification, multi-channel timing calibration, transceiver performance analysis and interference mitigation in Carrier Aggregation mode, DVT (Design Verification Testing) for high speed ADC/DAC, and 3GPP LTE/NR RF/RRM (Radio Resource Management) testing methodology, test cases design and solution 1 non-provisional patent filing

5G NR FR2 System Design. Phased Array and Virtual Array Algorithms. New Automotive Radar Systems with Interference Resistance.

5G Radio Front-End Signal Processing

Design and performance engineering in support of marketing and sales (proposal activities), and new product R&D with digital signal processing and high speed data convertion as well RF system analysis and design, for commercial communication satellites.Payload design of commercial communication satellites- C-band, Ku-band and Ka-band payload design and performance analysis for proposal activities- Development and training of analysis tools including spur analysis, gain-loss level distribution, MPT (Mass, Power and Thermal), etc., using Matlab and MS VBA (Visual Basic for Applications)Satellite digital payload R&D- Direct sampling receiver and direct synthesis transmitter design using Gsps wideband ADC/DAC- Digital channelization filter bank with application to digital satellite payload- RF front-end incl. solutions to key issues such as phase noise characterization, aggregation, and integration for satellite payload frequency generation, and multiport Power amplifier (MPA)- Resource management design and requirement specification (SDN and NFV, PEP, IP protocols, etc.)- Switching network design and digital beamforming network design based on switching network theory for ASIC and FPGA implementation with one patent application- 4 patents granted (US9882632, US9917623, US10200922, US10284283)

Research in 4G Celullar LTE-Advanced technology and standard development (Project Leader). - Multiple Access in IMT-A network system (project leader and manager)- Intercell interference cancellation, design and development of hardware platform for proof of concept demo, L2S mapping based simulation for performance evaluation- TD-LTE network planning technology - PTP product line (modulation and coding solution)- MU-MIMO, CoMP and Carrier Aggregation- 2 patents developed and pending

Wireless RF-analog-digital system design and testing in Kit & Solution Development Division- Responsible in RFFE system architectural specification, simulation and testing for Cadence’s product “RF Kit” (elected as one of the “Product of the year” of 2007 by EDN magazine)- Conception and implementation of level diagram tool for RFIC dynamic RF budgeting analysis- platform using Simulink-Virtuoso simulators (Spectre-RF and AMS-Designer) for RFFE circuit design and verification by co-simulation- IEEE 802.11b PHY-MAC design kit development (VHDL) Received an "Organizational Award"

- Advanced digital signal processing (multi-rate DSP)- RF system specification research and development, algorithm design with Matlab simulation - RF-mixed-digital ASIC design and verification

- Advanced CDMA system specification research and development and 3GPP2 activities- Wireless system design (IP-based services and applications): prototyping, field trial, demo- System level solution design and promotion for specific customers with wireless Internet access- Advanced channel coding (leading a team in successful Turbo Product Coding IC products development, from FPGA to an ASIC in CMOS 0.18um using Synopsys design flow)

Senior Principal Staff Satellite System Engineer (Grade A3), and Manager of Spatial Transmission Group- Modem and FEC product research, specification development (QPSK/8PSK/16-QAM, RS+VD, Turbo coding, etc.), involved in several contracted projects Intel-1188, Race-II Flash-TV- Satellite multimedia communication systems, satellite rural telephone system, DTV transmission via satellite, ATM, Intelsat IDR/IBS - Design and specification (proposed air interface solution to SkyBridge system, for both forward and return links with original block Turbo codes solution)Consultative activities with Alcatel Espace in on-board memory coding solution and with Alcatel Submarine in optic fiber FEC solution- Inventor of 8 granted PCT patents

- Researching in Error Correcting Coding techniques- 2 Mbps Soft Decision Viterbi hardware decoder design under contract with Ministry of Post & Telecommunication; - Unequal Error Protecting Coding under Chinese NSF grant;- Teaching a master degree course: Information Theory and Coding Techniques, with publication of a textbook “Information theory and coding techniques”, Beijing, Electronic Industry Press, September 1994, ISBN7-5053-2455-1 TP.722