Hiroyuki Kobashi Mayumi Osato Takao Hara Minoru Okada Heiichi Yamamoto Signal Cancellation for Satellite Frequency Reuse by Carrier Super-Positioning Multi-level Modulation. 1025-1030 2006 conf/iscc/2006 ISCC http://doi.ieeecomputersociety.org/10.1109/ISCC.2006.145 db/conf/iscc/iscc2006.html#KobashiOHOY06