Performance analysis of Orthogonal-frequency-division-multiplexing (OFDM) based on Channel Estimation Technique
Date
2013-09
Authors
Bhandari, Indu
Journal Title
Journal ISSN
Volume Title
Publisher
Pulchowk Campus
Abstract
In order to achieve the potential advantages of OFDM based systems, the channel
coefficients should be estimated with minimum error. Orthogonal frequency
division multiplexing (OFDM) is a method to transmit multi carrier in wireless
environment, and can also be seen as a multi-carrier digital modulation or multicarrier
digital multiplexing technology. Channel estimation plays a vital role in
OFDM system. The channel estimation technique that can be pilot based or blind
based can be helpful to improve the performance of OFDM system. The channel
estimation technique for OFDM systems based on pilot arrangements is
investigated. A different algorithm for both estimating channel at pilot
frequencies and interpolating the channel is performed. The Performance
comparison of all schemes by measuring bit error rate and mean square error
using different modulation techniques like QPSK, and 16-QAM is discussed.
Simulation results show the performance of different type channel estimation
techniques under various channel condition and modulation technique.
Description
In order to achieve the potential advantages of OFDM based systems, the channel
coefficients should be estimated with minimum error. Orthogonal frequency
division multiplexing (OFDM) is a method to transmit multi carrier in wireless
environment, and can also be seen as a multi-carrier digital modulation or multicarrier
digital multiplexing technology.
Keywords
Amplitude Modulation (QAM),, Quadrature Phase Shift Key (QPSK),, Phase Shift, Key (QPSK),, Binary Phase Shift Key (BPSK),, Inter-symbol Interference.
Citation
Master of Science in Information and Communication Engineering