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1. (WO2018141282) LOW PEAK-TO-AVERAGE POWER RATIO PRECODED REFERENCE SIGNAL DESIGN FOR MULTIPLE-INPUT, MULTIPLE-OUTPUT TRANSMISSIONS

Pub. No.:    WO/2018/141282    International Application No.:    PCT/CN2018/075242
Publication Date: Fri Aug 10 01:59:59 CEST 2018 International Filing Date: Tue Feb 06 00:59:59 CET 2018
IPC: H04W 72/04
Applicants: QUALCOMM INCORPORATED
PARK, Se Yong
ZENG, Wei
MANOLAKOS, Alexandros
AKKARAKARAN, Sony
HUANG, Yi
WANG, Renqiu
XU, Hao
ZHANG, Yu
SORIAGA, Joseph Binamira
JI, Tingfang
GAAL, Peter
Inventors: PARK, Se Yong
ZENG, Wei
MANOLAKOS, Alexandros
AKKARAKARAN, Sony
HUANG, Yi
WANG, Renqiu
XU, Hao
ZHANG, Yu
SORIAGA, Joseph Binamira
JI, Tingfang
GAAL, Peter
Title: LOW PEAK-TO-AVERAGE POWER RATIO PRECODED REFERENCE SIGNAL DESIGN FOR MULTIPLE-INPUT, MULTIPLE-OUTPUT TRANSMISSIONS
Abstract:
Methods, systems, and devices for wireless communication are described that support a low peak-to-average power ratio (PAPR) precoded reference signal design for multiple-input, multiple-output (MIMO) transmissions. A user equipment (UE) may identify multiple sets of symbols associated with different reference signal waveforms, where each reference signal waveform may be associated with a low PAPR. In some cases, different single-carrier reference signal waveforms may be mapped to subsets of frequency resources through frequency division multiplexing (FDM) for a transmission on a single antenna. However, the addition of single-carrier waveforms through FDM for a transmission via an antenna may result in an uplink transmission having a high PAPR (e.g., as compared to single-carrier waveforms). The UE may reduce the PAPR of the uplink transmission by multiplexing the reference signal waveforms in the time domain (e.g., using time division multiplexing (TDM)).