公开(公告)号：WO1997011536A1

公开(公告)日：1997-03-27

申请号：PCT/US1996015198

申请日：1996-09-23

Applicant: QUALCOMM INCORPORATED

Inventor： QUALCOMM INCORPORATED ,  RAMASASTRY, Jayaram

IPC: H04B07/185

CPC classification number: H04B7/18534

Abstract: Method and apparatus for enhancing diversity in spread spectrum type communication systems by creating pseudo-multipath conditions or links for certain communication signals. The invention provides alternative or additional signal paths (82, 84, 86 and 92, 96, 98, 99), for signals being transferred between gateways (20, 22) and communication system users (16, 18) through one or more satellite repeaters (12, 14). These additional paths are used to establish and maintain adequate signal diversity as well as certain signal links by remote subscribers (16, 18) in heavy urban areas. In further aspects of the invention, diversity enhancers can employ high gain parabolic antennas (76) and tracking mechanisms (100), or passive reflective surfaces (130). Signals can be relayed to subscriber units in canyon type blocked areas (18B, 18C, 18E) or within structures (18D).

Abstract translation: 通过为某些通信信号创建伪多径条件或链路来增强扩频类型通信系统中的分集的方法和装置。 本发明提供了用于通过一个或多个卫星中继器在网关（20,22）和通信系统用户（16,18）之间传送的信号的替代或附加信号路径（82,84,86和92,96,98,99） （12,14）。 这些附加路径用于建立和维护足够的信号分集以及在重型城市地区的远程用户（16,18）的某些信号链路。 在本发明的其它方面，分集增强器可以使用高增益抛物面天线（76）和跟踪机构（100）或无源反射表面（130）。 信号可以中继到峡谷型封闭区域（18B，18C，18E）或结构（18D）内的用户单元。