A forward link repeater delay watermarking (FLRDWM) system and method that enable
accurate position location of mobile stations in areas where repeaters are present
by watermarking repeated signals with repeater information. A repeater watermarks
a forward link signal with a (unique or non-unique) time delay modulation waveform
watermark every time a signal passes through the repeater. A mobile station detects
and/or identifies the time delay watermark on the forward link signal to determine
repeater information that aids the network position determination entity or mobile
station position location system in determining position location using AFLT and/or
A-GPS systems. A forward link time delay watermarking system can be implemented
to achieve low impact on FL and AFLT performance, favorable detection and identification
probabilities, and short time-to-detect/identify.