Invention Grant
US09246564B2 Generating precoders for use in optimising transmission capacity between an eNodeBb and UE in a DL MU-MIMO communications system
有权
生成用于优化DL MU-MIMO通信系统中eNodeBb和UE之间的传输容量的预编码器
- Patent Title: Generating precoders for use in optimising transmission capacity between an eNodeBb and UE in a DL MU-MIMO communications system
- Patent Title (中): 生成用于优化DL MU-MIMO通信系统中eNodeBb和UE之间的传输容量的预编码器
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Application No.: US14404122Application Date: 2013-04-12
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Publication No.: US09246564B2Publication Date: 2016-01-26
- Inventor: Yasushi Maruta , Duong Pham
- Applicant: NEC Corporation
- Applicant Address: JP Tokyo
- Assignee: NEC CORPORATION
- Current Assignee: NEC CORPORATION
- Current Assignee Address: JP Tokyo
- Agency: Young & Thompson
- Priority: AU2012902211 20120528
- International Application: PCT/JP2013/061691 WO 20130412
- International Announcement: WO2013/179806 WO 20131205
- Main IPC: H04B7/04
- IPC: H04B7/04 ; H04B7/06
Abstract:
This method of generating precoders is used in optimising transmission capacity between an eNodeB and UEs in a DL MU-MIMO communication system. The method includes the steps of computing correlation values between pairs of precoding matrices (PMs) of the reported precoding matrix indicators (PMIs) (step 40), selecting a PM pair having a minimum correlation value (step 42). If the minimum correlation value is less than a lower threshold Tmin, the method uses a PM corresponding to the received PMI (step 44). If the minimum correlation value is greater than Tmin and less than an upper threshold Tmax, the method includes the steps of computing correlation values of the reported PMI and Channel Matrices (CMs) from a fixed codebook of representative CMs (step 48), selecting a CM pair having a maximum correlation value (step 52), and computing precoders from the selected CM pair (step 54).
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