COMMUNICATION LINE QUALITY ESTIMATION APPARATUS, TRANSMITTER AND RECEIVER

WIPO Patent Application WO/2014/129031

A1

The objective of the invention is to provide a communication line quality estimation apparatus that can implement communication line quality estimation with a simple processing and with a high degree of precision. A communication line quality estimation apparatus of a receiver, which receives, from a transmitter, signals including known signals for which the relationship in phase between the transmitter and the receiver is known, comprises: a pilot addition unit (40), a first power calculation unit (41) and a first averaging unit (42) that accumulatively add and average the power values of noise components obtained by addition or subtraction in a specified combination of the known signals; a second power calculation unit (43) and a second averaging unit (44) that accumulatively add and average the power values of the known signals; and a power ratio calculation unit (45) that estimates a communication line quality by use of a noise signal power value received from the first averaging unit (42) and a received signal power value received from the second averaging unit (44).

HIGASHINAKA MASATSUGU (JP)

PCT/JP2013/081056

August 28, 2014

November 18, 2013

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MITSUBISHI ELECTRIC CORP (JP)

H04J11/00

EP1555761A1	2005-07-20
JP2011139202A	2011-07-14
JP2000216748A	2000-08-04
US20070281700A1	2007-12-06
JP4129004B2	2008-07-30

TENG YUANRUN ET AL.: "Proposal of Grouping Adaptive Modulation Method for Burst Mode OFDM Transmission System", IEICE TRANSACTIONS ON COMMUNICATIONS, vol. E86-B, no. 1, pages 257 - 265, XP008180370

SAKAI, HIROAKI (JP)
Hiroaki Sakai (JP)

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