"AC-OFDM"@en . _:b13444428 . . "1" . _:b10645623 . . _:b12897619 . _:b13905366 . _:b9193543 . _:b13918384 . _:b10639177 . _:b4004305 . _:b14368255 . _:b14393451 . _:b10639178 . _:b14442912 . _:b10205135 . _:b7013581 . _:b9150625 .