Title:
ORTHOGONAL PROJECTION PRECODING AND DECODING METHOD AND EQUIPMENT BY USING PART CSI FEEDBACK
Document Type and Number:
WIPO Patent Application WO/2009/094797
Kind Code:
A9
Abstract:
Orthogonal projection precoding and decoding methods and equipment by using part csi feedback are disclosed in the present invention. The precoding equipment in the present invention is used in a system which includes a base station and several mobile stations, the equipment includes: information receiving unit for receiving part Channel State Information (CSI); calculating unit for calculating the orthogonal projection matrix of part CSI of all the other mobile stations except for the mobile station to the precoding matrix of the mobile station; and data generating unit for precoding the data flow of the mobile station. The decoder of the present invention includes: receiving unit for receiving the data of information related to the orthocomplemented space of part CSI of a mobile station and all the other mobile stations except for the mobile station; filter unit for filtering the receiving data for obtaining part CSI of the mobile station; and projection unit for projecting part CSI of the mobile station to the orthocomplemented space of part CSI of all the other mobile stations. The corresponding precoding and decoding methods are also disclosed.
Inventors:
WANG LEI (CN)
WU KEYING (CN)
WU KEYING (CN)
Application Number:
PCT/CN2008/000157
Publication Date:
August 26, 2010
Filing Date:
January 22, 2008
Export Citation:
Assignee:
ALCATEL LUCENT SHANGHAI BELL (CN)
ALCATEL LUCENT (FR)
WANG LEI (CN)
WU KEYING (CN)
ALCATEL LUCENT (FR)
WANG LEI (CN)
WU KEYING (CN)
International Classes:
H04Q7/20
Attorney, Agent or Firm:
CHINA SCIENCE PATENT & TRADEMARK AGENT LTD (Bldg. BTsinghua Tongfang Hi-Tech Plaza,No.1, Wangzhuang Rd.,Haidian District, Beijing 3, CN)
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