Adaptive acquisition of PN sequences for DSSS communications

作     者：Kim, CJ Lee, HJ Lee, HS 

作者机构：ETRI Taejon 305600 South Korea Korea Adv Inst Sci & Technol Dept Elect Engn Taejon 305701 South Korea 

出 版 物：《IEEE TRANSACTIONS ON COMMUNICATIONS》 (IEEE Trans Commun)

年 卷 期：1998年第46卷第8期

页      面：993-996页

核心收录：

学科分类：0810[工学-信息与通信工程] 0808[工学-电气工程] 08[工学] 

主　　题：adaptive acquisition pseudonoise sequence spread-spectrum communication 

摘      要：Since the received signal levels in mobile communications are unknown and location 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 low detection probability for a selected threshold value. In this letter we present an adaptive acquisition scheme for PN sequences which estimate the background power level, multiply it with threshold coefficient to keep the false alarms constant, and use it as a threshold.