SIGNAL PROCESSING METHOD AND DEVICE

Title:

SIGNAL PROCESSING METHOD AND DEVICE

Document Type and Number:

WIPO Patent Application WO/2017/193834

Kind Code:

A1

Abstract:

The present invention provides a signal processing method, comprising: performing QAM modulation on a bit block to output N/2 QAM symbols, the bit block comprising a plurality of bits; conjugating the N/2 QAM symbols to output N/2 conjugated symbols; and sequentially mapping the N/2 QAM symbols to the first to N/2th subcarriers, and sequentially mapping the N/2 conjugated symbols to the (N/2+1)th to Nth subcarriers according to a mapping order opposite to that of the N/2 QAM symbols, wherein N is the number of subcarriers. Because the two subcarriers occupied by a QAM symbol and a conjugated symbol have a symmetrical relationship, the reliability of wireless signal transmission is improved under the condition that I/Q is not balanced.

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WO/2005/067241	SYMBOL DE-MAPPING METHODS IN MULTIPLE-INPUT MULTIPLE-OUTPUT SYSTEMS
WO/2010/032119	A HIERARCHICAL QUADRATURE (QAM) TRANSMISSION SCHEME
WO/2015/147442	256 QAM-BASED RESOURCE ALLOCATION METHOD AND BASE STATION THEREOF

Inventors:

WANG YI (CN)
HUANG LEI (CN)
SHI ZHENYU (CN)

Application Number:

PCT/CN2017/082500

Publication Date:

November 16, 2017

Filing Date:

April 28, 2017

Export Citation:

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Assignee:

HUAWEI TECH CO LTD (CN)

International Classes:

H04L27/34

Foreign References:

CN102714648A	2012-10-03
CN1909404A	2007-02-07
CN103916356A	2014-07-09
US6904098B1	2005-06-07

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