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1. (WO2018140201) TECHNIQUES AND APPARATUSES FOR TRANSMIT DIVERSITY WHILE MAINTAINING LOW PEAK TO AVERAGE POWER RATIO

Pub. No.:    WO/2018/140201    International Application No.:    PCT/US2018/012267
Publication Date: Fri Aug 03 01:59:59 CEST 2018 International Filing Date: Thu Jan 04 00:59:59 CET 2018
IPC: H04L 27/26
H04B 7/26
H04B 7/06
H04L 5/00
Applicants: QUALCOMM INCORPORATED
Inventors: AKKARAKARAN, Sony
PARK, Seyong
LUO, Tao
ZENG, Wei
XU, Hao
GAAL, Peter
HUANG, Yi
WANG, Renqiu
Title: TECHNIQUES AND APPARATUSES FOR TRANSMIT DIVERSITY WHILE MAINTAINING LOW PEAK TO AVERAGE POWER RATIO
Abstract:
Some techniques and apparatuses described herein may assign resource elements of a particular resource block for transmission by two or more different antennas in a fashion such that the symbols are interleaved in frequency and/or in time, which improves frequency diversity of the two or more different antennas, thereby improving uplink performance of the UE. In some aspects, when the two or more resource blocks are contiguous, then each antenna may produce an interleaved frequency division multiple access (IFDMA) waveform, which may maintain peak to average power ratio (PAPR) properties of a single channel FDMA transmission. Thus, some techniques and apparatuses described herein may achieve transmit diversity and/or frequency diversity of a stream of symbols on two or more antennas without significantly increasing the PAPR of the stream of symbols.