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The Journal of The Korea Institute of Intelligent Transport Systems Vol.5 No.3 pp.29-39
Super-Orthogonal STTC 전송 행렬을 이용한 STF-OFDM 시스템의 성능
Performance Evaluation of Space Time Frequency OFDM System using Super-Orthogonal Space Time Trllis Code Transmission Matrix
Abstract
In this paper, we propose an efficient method to detect the signal and evaluate performance of the system in frequency selective fading channel. We combine proposed system with OFDM (Orthogonal Frequency Division Multiplexing) to improve performance of the system. First, we study the SOSTTC-OFDM system using two transmit antenna and one receive antenna, and compare performance of the proposed space-time coded OFDM with that of previous system. We expand this system to the system using four transmit antennas with the proposed decoding method. Simulation results show that the proposed decoding method can detect the signal efficiently, and we identify that the performance of the proposed system is shown with varying doppler frequency in frequency selective fading channel.
