WIRELESS COMMUNICATION SYSTEM AND RECEIVING DEVICE

Title:

WIRELESS COMMUNICATION SYSTEM AND RECEIVING DEVICE

Document Type and Number:

WIPO Patent Application WO/2016/186000

Kind Code:

A1

Abstract:

The objective of the present invention is to improve a transmission rate by selecting an appropriate modulation scheme and code rate, even in an environment having a high antenna correlation or an environment having contamination by a narrow bandwidth interference signal. The receiving device of the present invention is a receiving device in which encoded bits are generated by subjecting an information bit input to an error correction coding process, and in which a modulated signal comprising the encoded bits that have been digitally modulated is received, characterized in that the receiving device is provided with: a demodulating means which calculates, from the received signal, a log likelihood ratio for the encoded bits that have been subjected to error correction coding; a means for calculating an average mutual information quantity in relation to the log likelihood ratio for the encoded bits; a means for calculating a transmission margin from the average mutual information quantity and a demodulating unit input mutual information quantity or a demodulating unit output mutual information quantity satisfying a required bit error rate; and an error correction coding means which supports error correction coding from the log likelihood ratio for the input encoded bits.

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Inventors:

HOSHI DAIKI (JP)
NAKADA TATSUHIRO (JP)
ITO KEI (JP)

Application Number:

PCT/JP2016/064157

Publication Date:

November 24, 2016

Filing Date:

May 12, 2016

Export Citation:

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Assignee:

HITACHI INT ELECTRIC INC (JP)

International Classes:

H04L1/00; H03M13/45; H04L27/00

Domestic Patent References:

WO2013162867A1

2013-10-31

Foreign References:

US20110261868A1	2011-10-27
JP2009152877A	2009-07-09
JP2010087707A	2010-04-15
JP2010514276A	2010-04-30

Other References:

TOBIAS LINDSTROM JENSEN ET AL.: "Mutual Information Metricsfor Fast Link Adaptation in IEEE 802.11n", 2008 IEEE INTERNATIONAL CONFERENCE ON COMMUNICATIONS, 2008, pages 4910 - 4915, XP031266241

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