公开(公告)号：CA2208830A1

公开(公告)日：1998-02-22

申请号：CA2208830

申请日：1997-06-25

Applicant: LUCENT TECHNOLOGIES INC

Inventor： PAPADOPOULOS HARALABOS ,  SUNDBERG CARL-ERIK WILHELM

IPC: H04J1/00 ,  H04H20/30 ,  H04J11/00 ,  H04B7/00 ,  H04L27/32 ,  H04B1/62 ,  H04B1/66

Abstract: In a system for simulcasting digitally modulated and analog FM signals over the same FM frequency band, the effect of the analog FM signal on the digitally modulated signal in the simulcast is calculated and canceled from the latter signal before its transmission. As a result, the digital transmission is free from interference from the analog FM signal. Moreover, the digital transmission is designed in such a manner that the interference caused thereby to the analog FM signal is kept at a minimal level.

公开(公告)号：CA2208830C

公开(公告)日：2001-04-03

申请号：CA2208830

申请日：1997-06-25

Applicant: LUCENT TECHNOLOGIES INC

Inventor： SUNDBERG CARL-ERIK WILHELM ,  PAPADOPOULOS HARALABOS

IPC: H04J1/00 ,  H04H20/30 ,  H04J11/00 ,  H04B7/00 ,  H04L27/32 ,  H04B1/62 ,  H04B1/66

Abstract: In a system for simulcasting digitally modulated and analog FM signals over the same FM frequency band, the effect of the analog FM signal on the digitally modulated signal in the simulcast is calculated and canceled from the latter signal before its transmission. As a result, the digital transmission is free from interference from the analog FM signal. Moreover, the digital transmission is designed in such a manner that the interference caused thereby to the analog FM signal is kept at a minimal level.