Southwest Jiaotong University School of Mathematics


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Title of talk: Pilot design strategies for channel estimation in doubly-selective wireless channels

Abstract: High quality channel estimation is very crucial for reliable data transmission in wireless communications.  In this talk, I will discuss about various channel estimation techniques for wireless communications. Specifically, I will focus on some useful pilot design techniques for doubly-selective channels (both time-varying and frequency-selective wireless channels) which are modelled using the the parsimonious basis expansion model (BEM).  Two types of pilot-based channel estimation methods will be presented for the single-carrier single-input-single-output (SISO) communications, one based on data-pilot time-multiplexed design, and the other based on data-dependent superimposed pilot design. Next, multi-carrier communication, specifically, orthogonal frequency-division multiplexing (OFDM) communication will be considered for very high mobility wireless environment (such as high-speed train communications). The challenges in high Doppler channels will be discussed briefly, and some suitable pilot design strategies will be discussed.

Speaker Biography

Kushal Anand received his Bachelors in Electronic Engineering from the Indian Institute of Technology (Indian School of Mines), Dhanbad, India, Master’s in Engineering (M.Eng.) and PhD from the School of Electrical and Electronic Engineering (EEE), Nanyang Technological University (NTU), Singapore. Currently, he is a post-doctoral research staff with the School of EEE, NTU. His research interests include transmission techniques for high mobility wireless channels, interference management in wireless networks with imperfect channel information, MIMO transceiver designs, multi-user wireless communications and signal processing.

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