Title:
CHANNEL EQUALIZATION METHOD AND SYSTEM BASED ON TIME-DOMAIN CHANNEL ESTIMATION
Document Type and Number:
WIPO Patent Application WO/2015/123989
Kind Code:
A1
Abstract:
Disclosed are a channel equalization method and system based on time-domain channel estimation. The method comprises: firstly, inserting a training sequence into a transmission end signal; then, performing channel equalization of the received training sequence part on a reception end by using a filter, and updating a filter coefficient; and filtering a data signal in a time domain by using the filter updated in the previous step, so as to implement channel equalization. In the present invention, channel equalization is performed by using a training sequence and a time-domain filter. A frame structure of a training sequence part is formed by M sequences and 0 sequences in an interleave manner, which helps the time-domain filter equalize polarization crosstalk a signal meets, so as to unlock polarization multiplexing; in addition, a coefficient of the time-domain filter is updated by using an RLS algorithm, the algorithm complexity is low, computation time can be saved, the sensitivity to a modulation format is absent, and the applicability is wide.
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Inventors:
ZHANG FAN (CN)
WANG DAN (CN)
DING RUI (CN)
WANG DAN (CN)
DING RUI (CN)
Application Number:
PCT/CN2014/086212
Publication Date:
August 27, 2015
Filing Date:
September 10, 2014
Export Citation:
Assignee:
UNIV BEIJING (CN)
International Classes:
H04L25/03; H04L25/02
Foreign References:
| CN1350406A | 2002-05-22 | |||
| CN103812806A | 2014-05-21 | |||
| CN1913396A | 2007-02-14 | |||
| CN1845487A | 2006-10-11 |
Attorney, Agent or Firm:
BEIJING JOYSHINE INTELLECTUAL PROPERTY OFFICE (CN)
北京君尚知识产权代理事务所(普通合伙） (CN)
北京君尚知识产权代理事务所(普通合伙） (CN)
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