Invention Application
- Patent Title: ADAPTIVE CYCLIC-SHIFT BASED MULTIPLEXING
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Application No.: US15488881Application Date: 2017-04-17
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Publication No.: US20180097534A1Publication Date: 2018-04-05
- Inventor: Alexandros MANOLAKOS , June NAMGOONG , Yang YANG , Jing JIANG
- Applicant: QUALCOMM Incorporated
- Main IPC: H04B1/10
- IPC: H04B1/10 ; H04L5/00 ; H04B7/0413 ; H04L27/26 ; H04B7/08 ; H04L25/02 ; H04B7/06

Abstract:
Aspects of the present disclosure provide techniques for using cyclic-shifts in code division multiplexing to shift transmitted signals (e.g., reference signals, control signals, and/or data) from different antenna ports of the transmitting device. Particularly, for multiple-input multiple-output (MIMO) systems that multiply the capacity of a radio link by using multiple transmit and receive antennas to exploit multipath propagation, aspects of the present disclosure minimize interference at the receiving device by separating the signals from different antenna ports based on the channel impulse response (or delay spread) of each antenna port of the channel. In some examples, the transmitting device may maximize resource utilization by interleaving the reference signals, control signals, and/or data from a plurality of antenna ports while maintaining adequate spacing between each signal.
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