Invention Grant
- Patent Title: Mixed rank downlink compound multi-user interference alignment scheme
- Patent Title (中): 混合下行复合多用户干扰对齐方案
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Application No.: US13822528Application Date: 2011-02-01
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Publication No.: US08929493B2Publication Date: 2015-01-06
- Inventor: Amin Mobasher , Yongkang Jia , Alireza Bayesteh
- Applicant: Amin Mobasher , Yongkang Jia , Alireza Bayesteh
- Applicant Address: CA Waterloo, Ontario
- Assignee: Blackberry Limited
- Current Assignee: Blackberry Limited
- Current Assignee Address: CA Waterloo, Ontario
- Agency: Cantor Colburn LLP
- International Application: PCT/IB2011/050428 WO 20110201
- International Announcement: WO2012/114148 WO 20120830
- Main IPC: H04L1/02
- IPC: H04L1/02 ; H04B7/04 ; H01Q3/26 ; H04W16/28

Abstract:
A method, system and device are provided to enable one or more users to receive mixed-rank data from two transmitters by using an indexed list of linearly independent, predetermined vectors νref={vref1, . . . , vrefM} and channel knowledge H1, H2 from first and second transmitters to compute equivalent channel matrix information Hieq based on the assigned or determined rank of the receiver. With this information, each transmitter selects Li receivers and constructs a transmitted signal by applying a selected precoding matrix to the mixed rank data, thereby eliminating interference to the rest of the receivers in the network so that a receiver can receive transmitted signals from both transmitters.
Public/Granted literature
- US20140219373A1 MIXED RANK DOWNLINK COMPOUND MULTI-USER INTERFERENCE ALIGNMENT SCHEME Public/Granted day:2014-08-07
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