In the CDMA Radio Multiplex Transmission, transfer function of line is inferred by using common pilot signal and synchronous detection is performed accordingly. The transmitting end transmits by periodically inserting pilot symbols into one channel only of multiplexed channels. The receiving end infers...http://www.google.de/patents/US6175558?utm_source=gb-gplus-sharePatent US6175558 - CDMA radio multiplex transmitting device and a CDMA radio multiplex receiving device
