Title :
BER performance of OFDM system with channel impairments
Author :
Ahmed, Hassan A. ; Sulyman, Ahmed Iyanda ; Hassanein, Hossam S.
Author_Institution :
Electr. & Comput. Eng. Dept., Queen´´s Univ., Kingston, ON, Canada
Abstract :
This paper analyzes the bit error rate (BER) performance of orthogonal frequency division multiplexing (OFDM) system. We derive the BER performance of OFDM system, and quantify the effects of channel impairments such as Doppler shift due to user mobility and high-power amplifier (HPA) distortion when amplifying the transmitted OFDM symbol. It is shown that the resulting inter-carrier interference (ICI) generated by these impairments becomes very significant in OFDM system, and severely degrades its BER performance. Simulation results match well and verify the analysis.
Keywords :
OFDM modulation; error statistics; intercarrier interference; wireless channels; BER performance; Doppler shift; OFDM system; bit error rate; channel impairments; high-power amplifier distortion; intercarrier interference; orthogonal frequency division multiplexing; user mobility; Bit error rate; Computer networks; Degradation; Doppler shift; Frequency estimation; High power amplifiers; Interference; Nonlinear distortion; OFDM; WiMAX;
Conference_Titel :
Local Computer Networks, 2009. LCN 2009. IEEE 34th Conference on
Conference_Location :
Zurich
Print_ISBN :
978-1-4244-4488-5
Electronic_ISBN :
978-1-4244-4487-8
DOI :
10.1109/LCN.2009.5355025
