Invention Grant
- Patent Title: Phase rotation for preambles within multiple user, multiple access, and/or MIMO wireless communications
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Application No.: US14585305Application Date: 2014-12-30
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Publication No.: US09276790B2Publication Date: 2016-03-01
- Inventor: Jun Zheng , Min Chuin Hoo , Vinko Erceg
- Applicant: BROADCOM CORPORATION
- Applicant Address: US CA Irvine
- Assignee: BROADCOM CORPORATION
- Current Assignee: BROADCOM CORPORATION
- Current Assignee Address: US CA Irvine
- Agency: Garlick & Markison
- Agent Shayne X. Short
- Main IPC: H04L27/20
- IPC: H04L27/20 ; H04L27/26 ; H04L5/00 ; H04L25/03

Abstract:
Phase rotation for preambles within multiple user, multiple access, and/or MIMO wireless communications. An appropriately designed phase rotation vector and/or appropriately designed cyclic shift delays (CSDs) are applied to respective sub-band components of the preamble. With appropriately designed CSDs, certain fields within the preamble are not modified. For example, a legacy short training field (L-STF) of the preamble is not changed when using appropriately designed CSDs. The respective CSDs may be implemented as integer multiples of a common CSD (e.g., 0×CSD, 1×CSD, 2×CSD, etc. such that one of the values of such a CSD vector may be zero [0], another may be the common CSD itself, etc.). Also, by employing an appropriately designed phase rotation vector and integer multiples of a CSD to a preamble, the respective peak to average power ratio (PAPR) between different respective fields within the preamble may be minimized.
Public/Granted literature
- US20150117569A1 Phase rotation for preambles within multiple user, multiple access, and/or MIMO wireless communications Public/Granted day:2015-04-30
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