A METHOD AND APPARATUS FOR, MULTI-USER CODE CHANNEL ACTIVATION DETECTION IN WIRELESS COMMUNICATION SYSTEM

Title:

A METHOD AND APPARATUS FOR, MULTI-USER CODE CHANNEL ACTIVATION DETECTION IN WIRELESS COMMUNICATION SYSTEM

Document Type and Number:

WIPO Patent Application WO/2004/107624

Kind Code:

A1

Abstract:

The present invention provides a method for multi-user code channel activation detection in wireless communication system , comprising the steps: receiving a wireless signal comprising a signal of the at least two users among said multi-users ; separating the data and training sequences in said wireless signal ; making a channel estimation according to said separated training sequence to abtain estimated channel response obtaining activated channel response window according to said estimated channel response ; obtaining a distributed spread-spectrum code which may correpond to said activated channel response window . According to said estimated channel response and corresponding distributed spreadspectrum code , obtaining spread-spectrum code activated code channel which may correpond to said activated channel response window making a multi-user detection for said obtained activated code channel , whereby realizing a receiver's blind or semi-blind detection.

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Inventors:

KANG SHAOLI (CN)
CHENG LUBANG (CN)
WANG YINGMIN (CN)

Application Number:

PCT/CN2004/000561

Publication Date:

December 09, 2004

Filing Date:

May 28, 2004

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Assignee:

DA TANG MOBILE COMM EQUIPMENT (CN)
KANG SHAOLI (CN)
CHENG LUBANG (CN)
WANG YINGMIN (CN)

International Classes:

H04B1/707; H04J13/16; (IPC1-7): H04J13/00

Domestic Patent References:

WO2002033982A2	2002-04-25
WO2001058041A2	2001-08-09

Foreign References:

US20020176386A1	2002-11-28
JP2001308824A	2001-11-02
EP0844747A1	1998-05-27

Other References:

See also references of EP 1628422A4
KANG SHAO-LI: "Performance of active codes detection algorithms for the downlink of TD-SCDMA system", PROCEEDINGS/2002 IEEE INTERNATIONAL SYMPOSIUM ON CIRCUITS AND SYSTEMS, pages 1 - 613

Attorney, Agent or Firm:

DEQI INTELLECTUAL PROPERTY LAW CORPORATION (No.1 Zhichun Road Haidian District, Beijing 3, CN)

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