Hosei Matsuoka Yusuke Nakashima Takeshi Yoshimura Acoustic OFDM System and Performance Analysis. 1652-1658 2008 91-A IEICE Transactions 7 http://dx.doi.org/10.1093/ietfec/e91-a.7.1652 db/journals/ieicet/ieicet91a.html#MatsuokaNY08