28 April 2004 Analysis and optimization of OFDM performance over fading and AWGN channel
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Proceedings Volume 5284, Wireless Communications and Networks; (2004) https://doi.org/10.1117/12.523489
Event: Asia-Pacific Optical and Wireless Communications, 2003, Wuhan, China
Abstract
Most wireless system now relies on the use of Orthogonal Frequency Division Multiplexing (OFDM) because of its high data rate and its capability to combat the multi-path interference. In this paper, we investigate how the guard Interval (GI) length dealing with the delayed waves creating by the multi-path fading environment, affect the system performance. We will compare the performances of the system by measuring Bit Error Rate (BER) with QPSK as modulation scheme over multi-path fading and Add White Gaussian Noise (AWGN) in different delay environments. Furthers we will try to determine the optimum values of the GI parameter to achieve a good performance according to the existing delay. The simulations result shows that the GI depends strongly on the maximum delay spread.
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Mohammed Bakir, Mohammed Bakir, Waiyun Li, Waiyun Li, Messaouda Belhachat, Messaouda Belhachat, Shouzheng Zhu, Shouzheng Zhu, Jingao Liu, Jingao Liu, } "Analysis and optimization of OFDM performance over fading and AWGN channel", Proc. SPIE 5284, Wireless Communications and Networks, (28 April 2004); doi: 10.1117/12.523489; https://doi.org/10.1117/12.523489
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