Pulse or digital communications – Spread spectrum – Direct sequence
Reexamination Certificate
2006-09-08
2010-06-15
Bocure, Tesfaldet (Department: 2611)
Pulse or digital communications
Spread spectrum
Direct sequence
C370S342000
Reexamination Certificate
active
07738532
ABSTRACT:
This invention discloses a channel estimation method for partial IC in TD-SCDMA intra-frequency cell, Specifically IC or de-correlation multi-user detection is utilized. Partial IC is implemented to realize the joint detection of the channel in several intra-frequency cells. As to n cells, the detailed procedures go as follows:At first, n 2×128 memories are established, just as s1, s2, s3. . . sn, in order to store the complex serial. Midamble codes of the received signal constitute the 128-chip data. Step 1: The data taken from Midamble codes of the received signals undergo the Partial IC process of the residual past in the first cell. The process of channel estimation in the first cell is undertaken. Afterwards, the received signals of UE from the 1stcell are recovered. The channel of the other cells is estimated from the received signals and the received signals of corresponding Midamble code is recovered to repeat the above procedures, until the completion of the process of the received signal, and it comes to Step (n+1). Iteration once is finished from Step 1 to Step (n+1), in which n processes are involved and one process is correspondent to one cell. The iteration after m times will finalize the channel estimation.
REFERENCES:
patent: 6961365 (2005-11-01), Li et al.
patent: 7489732 (2009-02-01), Cheng
patent: 2005/0286613 (2005-12-01), Wang et al.
patent: 2006/0280273 (2006-12-01), Mueller-Weinfurtner
patent: 2008/0123611 (2008-05-01), Wang et al.
patent: 2008/0229367 (2008-09-01), Cheng et al.
Cheng Jian
Luo Liyun
Bocure Tesfaldet
Spreadtrum Communications Inc.
LandOfFree
Method and apparatus of channel estimation in an... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus of channel estimation in an..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus of channel estimation in an... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4221204