Dissertation/Thesis Abstract

Performance of 4x2 Space-Time Parallel Cancellation Scheme in MIMO-OFDM
by Ramachandran, Ganesh, M.S., California State University, Long Beach, 2017, 59; 10603796
Abstract (Summary)

Orthogonal frequency division multiplexing (OFDM) is the dominant interface, which is used extensively for 4G LTE communication systems.

Space-time parallel cancellation (STPC) is employed in conjunction with OFDM, as the scheme provides diversity and coding gain along with inter-carrier interference (ICI) mitigation. ICI may be caused by carrier frequency offset (CFO), by the Doppler spread due to channel time-variation or, to a lesser extent by, sampling frequency offsets (SFOs).

This thesis estimates the bit error rate (BER) using a two-receiver system at the user end to illustrate how spatial resolution can increase efficiency of a mobile communication system. The BER is estimated using the outputs obtained at both receivers and then combining them to receive a better BER as compared to the 4x1 (4 transmitters, 1 receiver) system.

Simulation results show that the BER results for a 4x2 (4 transmitters, 2 receiver) system are much better than a 4x1system with code rate 1 and code rate 0.5 in a COST 207 channel model.

Indexing (document details)
Advisor: Yeh, Hen-Geul Henry
Commitee: Chassiakos, Anastasios, Yang, Hengzhao
School: California State University, Long Beach
Department: Electrical Engineering
School Location: United States -- California
Source: MAI 57/01M(E), Masters Abstracts International
Subjects: Electrical engineering
Publication Number: 10603796
ISBN: 978-0-355-21918-0
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