Patent · US Active

Method and apparatus of data processing in MIMO system

US8249613B2 · kind B2 · utility

2Cited by

3References

20Claims

0Family size

Assignee

NTT DOCOMO, INC. · JP

Inventors

Jingxiu Liu · Beijing, CN
Xiaoming She · Beijing, CN
Lan Chen · Tokyo, JP
Hidekazu Taoka · Tokyo, JP

Key dates

Filing date	Aug 6, 2008
Grant date	Aug 21, 2012
Priority date	—
Expiry date	May 30, 2031

Classification

Technology area (CPC H)Electricity
CPC primaryH04L2025/03426
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

A method of data processing includes the steps of: dividing user terminals into groups based on channel attributes and service requirements of the user terminals and setting a precoding code word and a cyclic delay for each of the groups; and determining which group a user terminal corresponding to the data to be processed belongs to and processing the data to be processed by the Cyclic Delay Diversity (CDD) precoding based on the precoding code word and the cyclic delay of the group. A data processing apparatus includes a grouping module and a CDD preceding module. By the method and apparatus above, the signal quality in the MIMO system can be improved.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.