关键词: 多用户辨识, 伪随机码, 数字波束形成, 虚警概率, 漏警概率

Abstract: In the content of traditional digital beamforming (DBF), it cannot implement the identification between the user signals and interferences, although the direction of arrival (DOA) estimation strategy digs out the spacial information of these signals. Similar as the multi-user detection in CDMA mobile communication system, different users are allocated with one pseudo-random (PN) code in the transmitters respectively. Furthermore, the receiver generates the replicas of transmitted PN codes and does correlation calculation with the received signals to harnesses the identification. The simulation illustrates that proposed approach picks up the desired signals and insures the low false alarm rate and missing detection rate.

Key words: multi-user identification, pseudo-random (PN) code, digital beamforming (DBF), false alarm rate, missing detection rate