Title :
Analysis of intercarrier and interblock interferences in wireless OFDM systems
Author :
Wu, Hsiao-Chun ; Gu, Guoxiang
Author_Institution :
Dept. of Electr. & Comput. Eng., Louisiana State Univ., USA
Abstract :
OFDM has been applied in the current wireless communications since it has the advantage over the conventional single-carrier BPSK, QPSK, QAM and MSK modulation schemes when enduring the nonflat fading. However, intercarrier-interference (ICI) and interblock interference (IBI) due to the Doppler effect, noncoherent phase and carrier frequency and multipath fadings limit the capability of OFDM systems. In this paper, a new generalized mathematical model for intercarrier and interblock interferences is derived for wireless OFDM systems, in which Doppler effect, carrier frequency drift, multipath fading, and cyclic prefix coding are all considered.
Keywords :
Doppler effect; OFDM modulation; cyclic codes; fading channels; mathematical analysis; multipath channels; radio networks; radiofrequency interference; Doppler effect; carrier frequency drift; cyclic prefix coding; interblock interference; intercarrier interference; multipath fading; orthogonal frequency division multiplexing; wireless OFDM system; wireless communication; Binary phase shift keying; Demodulation; Doppler effect; Interference; Laboratories; Local oscillators; OFDM modulation; Quadrature amplitude modulation; Signal analysis; Signal processing;
Conference_Titel :
Global Telecommunications Conference, 2003. GLOBECOM '03. IEEE
Print_ISBN :
0-7803-7974-8
DOI :
10.1109/GLOCOM.2003.1258346
