Highlights:

Skills:

System wireless engineer 07/2018 - 03/2019
Collision Communications, , United States
Project: MU-MIMO precoding (beamforming) for 4G LTE/5G FDD mode • Goal: predict downlink CSI from uplink channel observation in an FDD MU-MIMO system explore the possibility of MU-MIMO downlink beamforming without CSI feedback MU-MIMO downlink SINR analysis with estimation error in CSI
3D MIMO channel modelling for MU-MIMO sub-6GHz system - an approach combines 3GPP 3D GSCM, Ray Tracing & physical parameters extraction of multipath components to support FDD MU-MIMO beamforming - support spatial consistency, time varying (MS mobility) & large bandwidth channel • multi-dimensional SAGE algorithm development & system simulation for MU-MIMO downlink Beamforming - SAGE (Space-alternating generalized expectation-maximization) joint processing for extraction of the channel parameters - explore the scenarios of FDD channel reciprocity to support FDD beamforming - analyze the feasibility of FDD downlink CSI prediction w.r.t. resolution capability of MU-MIMO system and channel sparsity of channel in spatial-temporal-doppler domain - compare sum capacity of different precoders: Zero Forcing precoder based on predicted downlink CSI, LTE codebook, AoA based precoder • MU-MIMO downlink SINR outage probability analysis with linear precoder (zero-forcing) - analyze downlink SINR distribution with channel estimation error in MU-MIMO - numerical calculation of SINR and data rate for link layer scheduling--

Georgia Insititute of Technology 01/2009 - 5/2018
, , United States
Degree: Doctoral Degree
Major:Electrical Engineering
I have graduated from Ga tech on May 2018 and got a new job in Nashua. Now I am availabel for looking for a new job.

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