Invention Grant
- Patent Title: Quadrature modulation rotating training sequence
- Patent Title (中): 正交调制旋转训练序列
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Application No.: US11684566Application Date: 2007-03-09
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Publication No.: US08428175B2Publication Date: 2013-04-23
- Inventor: Rabih Chrabieh
- Applicant: Rabih Chrabieh
- Applicant Address: US CA San Diego
- Assignee: QUALCOMM Incorporated
- Current Assignee: QUALCOMM Incorporated
- Current Assignee Address: US CA San Diego
- Agency: Qualcomm Patent Group
- Agent James H. Yancey, Jr.
- Main IPC: H04L27/00
- IPC: H04L27/00

Abstract:
A system and method are provided for transmitting a rotating training sequence. A rotating training signal is generated in quadrature modulation transmitter. The rotating training signal includes training information sent via an in-phase (I) modulation path, as well as training information sent via a quadrature (Q) modulation path. The rotating training signal may be generated by initially sending training information via the I modulation path, and subsequently sending training information via the Q modulation path. The training information sent via the I modulation path may include a first symbol having a reference phase (e.g., 0 degrees or 180 degrees). Then, the training information sent via the Q modulation path would include a second symbol having a phase that is ±90 from the reference phase.
Public/Granted literature
- US20080219338A1 QUADRATURE MODULATION ROTATING TRAINING SEQUENCE Public/Granted day:2008-09-11
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