公开(公告)号：AT518314T

公开(公告)日：2011-08-15

申请号：AT02749726

申请日：2002-06-28

Applicant: QUALCOMM INC

Inventor： JOSHI ABHAY ,  GLAZKO SERGUEI ,  NEUFELD ARTHUR

IPC: H04B1/707 ,  H04B1/7073 ,  H04B1/7075 ,  H04Q7/38

Abstract: Systems and techniques are disclosed wherein a gated pilot signal can be acquired faster by checking the neighbor pilot signals of the target pilot signal. A subscriber station may frequency lock onto a wrong pilot burst because a partial correlation exists between the wrong pilot burst and an adjacent pilot burst. Comparing the strength of the target pilot signal with the strength of neighbor pilot signals enables the selection of the strongest pilot signal before the timely process of frequency locking and demodulation are initiated. Grouping pilot signals with the same symbol sequence and a pseudo-random noise increment apart enables quick acquisition of a gated pilot signal.

公开(公告)号：AT386371T

公开(公告)日：2008-03-15

申请号：AT02768494

申请日：2002-08-08

Applicant: QUALCOMM INC

Inventor： JOSHI ABHAY ,  NEUFELD ARTHUR

IPC: H04B1/7073 ,  H04B1/7075 ,  H04B1/7077 ,  H04B1/709

Abstract: Systems and techniques to acquire a gated pilot signal by searching for a first gated pilot signal, deriving timing information from the search for the first gated pilot signal, and searching for a second gated pilot signal using the timing information. This can be implemented in a variety of fashions including a receiver with a searcher configured to generate a bit sequence, a correlator configured to correlate a received signal with the bit sequence, and a processor configured to detect a first gated pilot signal as a function of the correlation, derive timing information from the first gated pilot signal, and detect a second gated pilot signal by using the timing information to control the bit sequence generated by the searcher.

公开(公告)号：HK1068736A1

公开(公告)日：2005-04-29

申请号：HK05100789

申请日：2005-01-31

Applicant: QUALCOMM INC

Inventor： AMERGA MESSAY ,  JOSHI ABHAY ,  LEVIN MARK

IPC: H04B1/00 ,  H04B1/7117 ,  H04B7/08 ,  H04B7/26

Abstract: A method for assigning tracking elements includes sorting a list of potential assignments according to a diversity criterion. In one example, a list of received signal instances is sorted first according to a measure of energy and then sorted again according to the diversity criterion. In a further embodiment, a demodulation element may be labeled available for assignment yet continue to output demodulated symbols in a locked state. Applications to a mobile station of a CDMA system for cellular telephony are discussed.

公开(公告)号：BR0210581A

公开(公告)日：2004-06-08

申请号：BR0210581

申请日：2002-06-28

Applicant: QUALCOMM INC

Inventor： JOSHI ABHAY ,  GLAZKO SERGUEI ,  NEUFELD ARTHUR JAMES

IPC: H04B1/7073 ,  H04B1/7075 ,  H04Q7/38 ,  H04B1/707

Abstract: Systems and techniques are disclosed wherein a gated pilot signal can be acquired faster by checking the neighbor pilot signals of the target pilot signal. A subscriber station may frequency lock onto a wrong pilot burst because a partial correlation exists between the wrong pilot burst and an adjacent pilot burst. Comparing the strength of the target pilot signal with the strength of neighbor pilot signals enables the selection of the strongest pilot signal before the timely process of frequency locking and demodulation are initiated. Grouping pilot signals with the same symbol sequence and a pseudo-random noise increment apart enables quick acquisition of a gated pilot signal.