公开(公告)号：CA2004808C

公开(公告)日：1995-01-10

申请号：CA2004808

申请日：1989-12-06

Applicant: INTERDIGITAL TECH CORP

Inventor： KAEWELL JOHN D JR ,  SCHREIER NICHOLAS C ,  ROLLER JAMES J

IPC: H04B7/24 ,  H04B7/08 ,  H04B7/26 ,  H04Q7/00 ,  H04Q7/20 ,  H01Q1/00

Abstract: A spatial diversity system for digital mobile telephone networks which comprises at least two antennas, one antenna being part of a primary (or master) unit and the other being part of a diversity (or slave) unit, each unit having processing means to detect the "quality" of digital audo signals received by their respective antennas, the "quality" comprising link quality, AGC level and parity errors; the primary unit being capable of comparing the "quality" of the audio signals received by each antenna, selecting the higher "quality" signal and transmitting the higher "quality" signal to the telephone network.

公开(公告)号：DE3940690C2

公开(公告)日：2001-02-08

申请号：DE3940690

申请日：1989-12-08

Applicant: INTERDIGITAL TECH CORP

Inventor： KAEWELL JOHN DAVID ,  SCHREIER NICHOLAS C ,  ROLLER JAMES J

IPC: H04B7/24 ,  H04B7/08 ,  H04B7/26 ,  H04Q7/00 ,  H04Q7/20 ,  H04B7/04

Abstract: A spatial diversity system for digital mobile telephone networks which comprises at least two antennas, one antenna being part of a primary (or master) unit and the other being part of a diversity (or slave) unit, each unit having processing means to detect the "quality" of digital audio signals received by their respective antennas, the "quality" comprising link quality, AGC level and parity errors; the primary unit being capable of comparing the "quality" of the audio signals received by each antenna, selecting the higher "quality" signal and transmitting the higher "quality" signal to the telephone network.