EE Seminar: Semi-blind Turbo Equalization Scheme for LTE Uplink Receiver

~~Speaker: Amit Bar-Or
M.Sc. student under the supervision of Dr. Dan Raphaeli

Wednesday, February 25st, 2015  at  15:30
Room 011, Kitot Bldg., Faculty of Engineering

Semi-blind Turbo Equalization Scheme for LTE Uplink Receiver
Abstract
 
An advanced receiver scheme for LTE uplink is proposed. The scheme combines semi-blind channel estimation and Turbo equalization and is based on an approximate Expectation-Maximization algorithm. The receiver iterates between demodulation of the data symbols using frequency domain soft interference cancellation, Turbo decoding and semi-blind channel estimation that utilizes the soft symbols extracted from the Turbo decoder output. It is shown that using the proposed scheme one can replace most of the dedicated pilots used in the current LTE scheme with data information and obtain significantly better performance with the same bandwidth. Moreover, an efficient implementation of the proposed algorithm utilizing the DFT/FFT properties used in the SC-OFDM scheme is presented.