公开(公告)号：DE60025677D1

公开(公告)日：2006-04-13

申请号：DE60025677

申请日：2000-06-07

Applicant: PACE MICRO TECHNOLOGY PLC SHIP

Inventor： NOORALAHIYAN AMIR

IPC: H03J7/18

Abstract: The invention provides a method for searching the frequency range of a digital data receiving device, said method including the steps in one embodiment of firstly identifying and disregarding analogue carrier frequencies in the range, then proceeding to estimate the initial starting frequency for a digital carrier by dynamic real-time pre-processing of the spectrum profile and then obtaining successive samples of the frequency range from the start position for the carrier until the centre frequency for the carrier is located. In one embodiment the method includes the prediction of the centre frequency estimations of all digital carriers for respective channels in the range prior to the search commencing. The method reduces the possibility of locking to analogue carriers, and can reduce the time required to perform a search in comparison to the current digital carrier frequency "search & lock" procedure

公开(公告)号：DE60025677T2

公开(公告)日：2006-08-17

申请号：DE60025677

申请日：2000-06-07

Applicant: PACE MICRO TECHNOLOGY PLC SHIP

Inventor： NOORALAHIYAN AMIR

IPC: H03J7/18

Abstract: The invention provides a method for searching the frequency range of a digital data receiving device, said method including the steps in one embodiment of firstly identifying and disregarding analogue carrier frequencies in the range, then proceeding to estimate the initial starting frequency for a digital carrier by dynamic real-time pre-processing of the spectrum profile and then obtaining successive samples of the frequency range from the start position for the carrier until the centre frequency for the carrier is located. In one embodiment the method includes the prediction of the centre frequency estimations of all digital carriers for respective channels in the range prior to the search commencing. The method reduces the possibility of locking to analogue carriers, and can reduce the time required to perform a search in comparison to the current digital carrier frequency "search & lock" procedure