October 2023 to present, Senior Lecturer in the School of CSEE, University of Essex, UK. 

December 2019 to September 2023, Lecturer in the School of CSEE, University of Essex, UK. 

January 2018 to November 2019, Senior Research Fellow in 5G Innovation Centre, University of Surrey, UK. 

July 2008 to December 2017, Research Associate & Research Fellow (since November 2014), School of Electrical and Electronic Engineering, Nanyang Technological University (NTU), Singapore.

• June 2014, PhD awarded from School of EEE, NTU. Thesis title: Perfect- and Quasi- Complementary Sequences (see Contents & Abstract), advised by Prof Yong Liang Guan. Note: Complementary sequences have found numerous applications in wireless communications such as PAPR reduction, optimal channel estimation, information hiding, interference-free multiuser communications, etc. In this thesis, I have studied fundamental limits, algebraic constructions, and practical applications of perfect- and quasi- complementary sequences. Major contributions of this PhD thesis include:

  • 1. A derived "generalized Levenshtein bound" which is tighter than the celebrated Welch bound for quasi-complementary sequence sets; A novel weight vector for a tighter Levenshtein bound which settles an open problem left by the Russian Information Theorist Vladimir Levenshtein in 1999;

    2. Two new algebraic constructions of perfect-complementary sequences for peak-to-mean power control in MC-CDMA and OFDM systems; Identification of odd-length binary Z-complementary pairs (OBZCPs), each displaying the closest correlation properties to that of the celebrated Golay complementary pairs; 

    3. A novel receiver design for interference-free MC-CDMA systems with perfect-complementary sequences. This settles a long-standing open problem on the orthogonality loss of such MC-CDMA systems (with traditional matched-filter based receiver) in fractional-delay channels.

• May 2012 to February 2013,  Visitor in the University of Melbourne (UoM) [hosted by Prof. Udaya Parampalli].

• June 2013 to July 2013, Visiting PhD student in the Hong Kong University of Science and Technology (HKUST) (hosted by Prof. Wai Ho Mow). 

July 2007, Master's Degree in the Department of Electronic Engineering from Tsinghua University, advised by Prof. Huazhong Yang. Thesis title: The Multistage Decoding Technique for DRM Receiver [Note: Digital Radio Mondiale (DRM ) is a set of digital audio broadcasting technologies using OFDM technique and designed to work over the bands currently used for AM broadcasting, particularly shortwave. My M.Sc thesis presented a reconfigurable ASIC CODEC (implemented using Verilog HDL) for multilevel coding (MLC) and multistage decoding (MSD) based on Viterbi decoder]. 

July 2004, Bachelor Degree in the School of Electronics and Information Engineering from Huazhong University of Science and Technology (HUST).