Analysis and optimization of OFDM performance over fading and AWGN channel

Mohammed Bakir; Waiyun Li; Messaouda Belhachat; Shouzheng Zhu; Jingao Liu

doi:10.1117/12.523489

28 April 2004 Analysis and optimization of OFDM performance over fading and AWGN channel

Mohammed Bakir, Waiyun Li, Messaouda Belhachat, Shouzheng Zhu, Jingao Liu

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.

Citation Download Citation

Mohammed Bakir, Waiyun Li, Messaouda Belhachat, Shouzheng Zhu, and Jingao Liu "Analysis and optimization of OFDM performance over fading and AWGN channel", Proc. SPIE 5284, Wireless Communications and Networks, (28 April 2004); https://doi.org/10.1117/12.523489

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available