Invention Grant
- Patent Title: Methods and apparatus for communicating information using non-coherent and coherent modulation
- Patent Title (中): 使用非相干和相干调制来传达信息的方法和装置
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Application No.: US12578251Application Date: 2009-10-13
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Publication No.: US08331488B2Publication Date: 2012-12-11
- Inventor: Cyril Measson , Alberto Vigato , Saurabh Tavildar , Junyi Li , Thomas Richardson , Xinzhou Wu
- Applicant: Cyril Measson , Alberto Vigato , Saurabh Tavildar , Junyi Li , Thomas Richardson , Xinzhou Wu
- Applicant Address: US CA San Diego
- Assignee: QUALCOMM Incorporated
- Current Assignee: QUALCOMM Incorporated
- Current Assignee Address: US CA San Diego
- Agent James O'Hare; Paul S. Holdaway
- Main IPC: H04L27/04
- IPC: H04L27/04

Abstract:
Non-coherent modulation is used to communicate coding information via pilot signals using a first subset of resources, and coherent modulation is used to generate data signals. This allows for a stronger global code while keeping individual signaling complexity low. First and second communications devices communicate information using a set of communications resources. By performing non-coherent demodulation on pilot signals received on a first subset of the set of communications resources coding information is recovered. First and second channel estimates are generated from the pilot signals received on the first subset of the communications resources. Coherent demodulation is performed on data signals received on a second subset of the set of communications resources using the first and second channel estimates and the coding information to recover information communicated by the first communications device and to recover separate information communicated by the second communications device.
Public/Granted literature
- US20110085620A1 METHODS AND APPARATUS FOR COMMUNICATING INFORMATION USING NON-COHERENT AND COHERENT MODULATION Public/Granted day:2011-04-14
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