Invention Grant
- Patent Title: Explicit and implicit hybrid beamforming channel sounding
- Patent Title (中): 显式和隐式混合波束成形通道探测
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Application No.: US13691912Application Date: 2012-12-03
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Publication No.: US09055449B2Publication Date: 2015-06-09
- Inventor: Matthew A. Silverman , Jeffrey R. Adams , David Kloper , Yanxin Na , Narayan Vishwanathan , Daniel Wee
- Applicant: Cisco Technology, Inc.
- Applicant Address: US CA San Jose
- Assignee: Cisco Technology, Inc.
- Current Assignee: Cisco Technology, Inc.
- Current Assignee Address: US CA San Jose
- Agency: Edell, Shapiro & Finnan LLC
- Main IPC: H04B1/00
- IPC: H04B1/00 ; H04B15/00 ; H04W16/28

Abstract:
A channel sounding scheme is presented herein that relies on a combination of a first channel sounding procedure and a second channel sounding procedure. The first channel sounding technique is one that involves an exchange of dedicated channel sounding related signals to determine channel conditions between the first wireless communication device and the particular second wireless communication device. The second channel sounding technique is one in which channel conditions are implicitly discovered from any signals transmitted by the particular second wireless communication device to the first wireless communication device. A first wireless communication device computes updates to steering matrix information used for beamforming one or more signal streams to a particular second wireless communication device based on a combination of the first channel sounding technique and the second channel sounding technique.
Public/Granted literature
- US20140154992A1 Explicit and Implicit Hybrid Beamforming Channel Sounding Public/Granted day:2014-06-05
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