Invention Grant
- Patent Title: Precoding with partially stale feedback
- Patent Title (中): 部分陈旧反馈的预编码
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Application No.: US13414932Application Date: 2012-03-08
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Publication No.: US09363002B2Publication Date: 2016-06-07
- Inventor: Ali S. Khayrallah , Yi-Pin Eric Wang
- Applicant: Ali S. Khayrallah , Yi-Pin Eric Wang
- Applicant Address: SE Stockholm
- Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
- Current Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
- Current Assignee Address: SE Stockholm
- Agency: Patents on Demand, P.A.
- Agent Brian K. Buchheit; Scott M. Garrett
- Main IPC: H04B7/06
- IPC: H04B7/06 ; H04L25/03 ; H04L1/00 ; H04B7/04 ; H04B7/02 ; H04B17/373

Abstract:
A system and method in which a base station treats the Channel State Information (CSI) from wireless terminals as only partially-stale, and exploits this partially-stale CSI to predict the current channel from old estimates of the channel. The predicted channel is then used to design a precoder. The base station shapes the transmitted signal with the precoder so as to match it as closely as possible to the current channel. Particular embodiments thus combine the benefits of the stale feedback scheme with precoding to match the channel. Consequently, the signal received at a terminal is better conditioned, thereby providing a greater overall boost in performance of the communication arrangement between the base station and the terminal. The usage of partially-stale CSI can be important for dense networks with a large number of simple terminals.
Public/Granted literature
- US20130237212A1 PRECODING WITH PARTIALLY STALE FEEDBACK Public/Granted day:2013-09-12
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