OFDM/OQAM-IOTA System With Odd/Even Center Preamble Structure 


Vol. 30,  No. 12, pp. 1153-1160, Dec.  2005


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  Abstract

OFDM/OQAM(Offset QAM)-IOTA system requires the IOTA(Isotropic Orthogonal Transform Algorithm) function that has superior localization property in time and frequency domain instead of guard interval used for conventional OFDM/QAM system to be robust to multipath channel. Therefore, OFDM/OQAM-IOTA system has more spectral efficiency than conventional OFDM/QAM system. But, when channel estimation scheme for conventional OFDM/QAM system is applied straightforwardly to OFDM/OQAM-IOTA system, an intrinsic Inter-Symbol-Interference is observed. So suitable preamble structure for the channel estimation scheme of OFDM/ OQAM-IOTA system is required. In this paper, we propose a new preamble structure that is appropriate to OFDM/OQAM-IOTA system and then perform ideal channel estimation and practical channel estimation in low-to-medium mobile speed and compare them with conventional OFDM/QAM system. Simulation results show that OFDM/OQAM-IOTA system with proposed preamble structure has 1.5 dB Eb/N0 gain on Target BER 10^(-3) and about 25% transmission rate gain against the conventional OFDM/QAM system considering quarter of FFT size as guard interval size.

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  Cite this article

[IEEE Style]

S. Kang, J. Heo, K. Chang, "OFDM/OQAM-IOTA System With Odd/Even Center Preamble Structure," The Journal of Korean Institute of Communications and Information Sciences, vol. 30, no. 12, pp. 1153-1160, 2005. DOI: .

[ACM Style]

SeungWon Kang, Joo Heo, and KyungHi Chang. 2005. OFDM/OQAM-IOTA System With Odd/Even Center Preamble Structure. The Journal of Korean Institute of Communications and Information Sciences, 30, 12, (2005), 1153-1160. DOI: .

[KICS Style]

SeungWon Kang, Joo Heo, KyungHi Chang, "OFDM/OQAM-IOTA System With Odd/Even Center Preamble Structure," The Journal of Korean Institute of Communications and Information Sciences, vol. 30, no. 12, pp. 1153-1160, 12. 2005.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880