Title:
UPLINK BURST EQUALIZING METHOD IN BROAD WIDE ACCESS SYSTEM
Document Type and Number:
WIPO Patent Application WO/2005/064830
Kind Code:
A1
Abstract:
An equalizing method of uplink burst in the way of using pre-training sequence and burst equalization together in Broad Wide Access System, that is, before transferring user data, train the equalizer, then begin transferring user data, equalizer track the changing radio channel using the decision user data as reference; If the channel change exceeds the tracking range of equalizer, such as error rate exceeds threshold (1) but not exceeds threshold (2), then performing burst equalizing; If the channel change exceeds the range of equalizing for the equalizer, such as error rate exceeds the threshold (2), then perform training again. The present invention use the combination of pre-training and burst equalization, by setting different threshold to switch, greatly extend the time interval of pre-training process, reduce the number of pre-training, and increase the available band; the increased burst equalizing process greatly reduce the requirement for condition of system (for example, the time interval between statistic channel or burst is very short), which improve the applying occasion of product.
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Inventors:
SUN CHANGYIN (CN)
WANG YUNFENG (CN)
WANG YUNFENG (CN)
Application Number:
PCT/CN2003/001128
Publication Date:
July 14, 2005
Filing Date:
December 26, 2003
Export Citation:
Assignee:
ZTE CORP (CN)
SUN CHANGYIN (CN)
WANG YUNFENG (CN)
SUN CHANGYIN (CN)
WANG YUNFENG (CN)
International Classes:
H04J3/06; H04J3/14; H04L25/03; (IPC1-7): H04J3/14
Domestic Patent References:
| WO2001097475A1 | 2001-12-20 |
Foreign References:
| US5970092A | 1999-10-19 | |||
| CN1158033A | 1997-08-27 |
Attorney, Agent or Firm:
BEIJING LEADER PATENT AGENCY CO.,LTD (No.13 Huayuanlu Haidian District, Beijing 8, CN)
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