Engineering Electrical

Yi Shen Yeh

+1-619-***-**** adevgq@r.postjobfree.com LinkedIn: www.linkedin.com/in/yishenyeh

EDUCATION

University of California, San Diego September 2018 - June 2020 Master of Science in Electrical and Computer Engineering GPA 3.3+

• Relevant Coursework: Coding Theory, Modern Communication Networks, Digital Communications, Wireless Sensing National Taipei University September 2014 - January 2018 Bachelor of Engineering in Communication Engineering, GPA 3.9+

• Relevant Coursework: OOP, Communications IC Design, Robotics, Multimedia SP, VLSI SKILLS

• MATLAB (Proficient)

• C/C++ (Experienced)

• English(Fluent)/ Mandarin (Native)

• OFDM, OTFS, CDMA, 802.11

• ISI, MAI, ICI

• MFSK Frequency Hopping/Jamming

• 5GNR LDPC, Source Coding

• Wireless Sensing, Radar, Beamforming

• FMCW, NFC

THESIS

Optimization of Read Thresholds in NAND Flash Memory for LDPC Codes September 2019 - Now

• Using maximum mutual information (MMI) to optimize the positioning and quantity of read thresholds in NAND Flash memory.

• Employed the discretized Density Evolution (DE) and Gaussian approximation method to optimize the read threshold voltages while comparing with the performance of actual QC-LDPC codes decoded via belief propagation

• Implement the 802.11n QC LDPC code of rate 2/3 and length 1,944 encoder/decoder PUBLICATION

• Yeh, Yi-Shen; Fazeli, Arman; and Siegel, Paul H. ``Optimization of Read Thresholds in MLC NAND Memory for LDPC Codes," to appear in Proceedings of Non-Volatile Memories Workshop (NVMW), March 2020. RESEARCH

Concurrent mmWave Communication and Radar for Vehicles February - April 2020

• Combined RADAR to the system without interrupting existing communication link while maintaining RADAR accuracy in range and velocity estimation to near CRLB and with resolution of 60cm and 1.28m/s

• Applied symplectic fast Fourier transform (SFFT) to implement orthogonal time frequency space (OTFS) on top of the conventional OFDM link that increases robustness under high Doppler scenarios

• Used 8x8 phased array with multi-beam along side our self-designed hierarchical space spanning algorithm to efficiently sweep FoV while maintaining constant communication with BS at 6.96% higher throughput Design of Non-Coherent MFSK Fast Frequency Hopping Receiver for Low Energy Consumption, July - October 2019

• Design the low power consuming receiver for NCMFSK FFH system using 2-pole Butterworth bandpass filters compared against the ideal matched filter. The performance loss at bit error rate at is approximately 1.2 dB for binary case

• Evaluate the fast frequency hopping combining loss which ranges from 1 to 3 db loss with 3 to 9 number of hops per symbol

• Test the performance of the system with the presence of a partial-band jammer and compute the worst case jamming fraction

• Proposes the adoption of Multi-Pattern Frequency Hopping (MPFH) system to mitigate the effects of a follower-jammer ENGINEERING EXPERIENCE

Combating MAI and ISI on DS-CDMA System in Non-Gaussian Environment using a Network of Kalman Filter, Spring 2019

• Assumes the DS-CDMA systems with multipath fading channel, along with the effects of MAI and ISI

• Refine the CDMA system to match the state-space model assumed by the Kalman filter and implement it using MATLAB

• Model the impulsive non-Gaussian noise environment using -contaminated model

• Employ the extended Network of Kalman Filters (NKF) detector to detect impulsive noise and model it using weighted sum of Gaussians (WSG)

• Compare the performance of extended NKF in respect to SRN with conventional RAKE receiver and Recursive Least Square (RLS) Implementing a basic 802.11 Tx/Rx Packet Processing System of IEEE 802.11-2007, Fall 2018

• Implemented an OFDM modulation/demodulation system to process packets

• Perform packet detection and packet synchronization using STF/LTF cross-correlation results

• Correct for fine and coarse carrier frequency offset (CFO) as well as sampling frequency offset (SFO) using LTSs and pilots LEADERSHIP EXPERIENCE

Vice President, Student Association, National Taipei University, New Taipei City, Taiwan September 2015 - June 2017 Chair, Island Model United Nations Conference 2017, National Taipei University, New Taipei City, Taiwan February 2017 MEMBERSHIP & ACHIEVEMENTS

STAR Group member at UCSD Center for Memory and Recording Research (CMRR) September 2019 - Now Citi Bank Pan Asia Model United Nations 2015 & 2016 - Best Diplomacy Award Dec 2015 & Dec 2016 10−3

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