Adaptive acquisition of PN sequences for DSSS communications
Chang‐Joo Kim, Hyuckjae Lee, Hwang-Soo Lee · IEEE Transactions on Communications · 1998
Since the received signal levels in mobile communications are unknown and the location is varying, acquisition schemes for pseudonoise (PN) sequences with fixed thresholds cannot provide satisfactory performance. This fixed-threshold scheme may cause too many false alarms or result in a low detection probability for a selected threshold value. We present an adaptive acquisition scheme for PN sequences which estimate the background power level, multiply it with a threshold coefficient to keep the false alarms constant, and use it as a threshold.