Toshihiko Yamasaki Tomoyuki Nakayama Tadashi Shibata A low-power switched-current CDMA matched filter employing MOS linear matching cell with on-chip A/D converter. 254-261 2009 42 Integration 2 http://dx.doi.org/10.1016/j.vlsi.2008.09.002 db/journals/integration/integration42.html#YamasakiNS09