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On the Effect of Time-Domain Per-Subcarrier Equalization for Band-Limited OQAM Based Multi-Carrier Modulation Systems

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4 Author(s)
Kunishima, H. ; Grad. Sch. of Inf. Sci. & Electr. Eng., Kyushu Univ., Fukuoka ; Koga, H. ; Muta, O. ; Akaiwa, Y.

As a method to realize an orthogonal multicarrier transmission, offset quadrature amplitude modulation based multi-carrier modulation (OQAM-MCM) has been known, where each subcarrier is strictly band-limited by a filter. Objective of this paper is to discuss the use of OQAM-MCM system instead of orthogonal frequency division multiplexing (OFDM) system as a countermeasure against frequency-selective fading. We investigate the performance of OQAM-MCM system with a small number of subcarriers employing a simplified time-domain per-subcarrier equalizer. Computer simulation results show that OQAM-MCM system can achieve both better spectrum efficiency and lower bit error rate (BER) performance than those of OFDM systems with insufficient guard interval (GI), when a time-domain per-subcarrier equalizer is used in both systems.

Published in:

Vehicular Technology Conference, 2008. VTC Spring 2008. IEEE

Date of Conference:

11-14 May 2008