An improvement to a code-division-multiple-access (CDMA) system employing spread-spectrum modulation, with the CDMA system having a base station (BS) and a plurality of remote stations. The base station has a BS-spread-spectrum transmitter and a BS-spread-spectrum receiver. A remote station has an RS-spread-spectrum...http://www.google.de/patents/US20080062951?utm_source=gb-gplus-sharePatent US20080062951 - Collision detection
