EP0869645A3

Phase and amplitude correction in a multicarrier receiver

Abstract

A multicarrier receiver uses a two stage correction process. The first stage derives phase and amplitude correction signals from the reference symbols in the received signal; the second stage applies a blind tracking algorithm, to derive phase and amplitude correction signals from the payload.

EP0869645A3, drawing sheet 1 — Sheet 1 of 1

Term

Term ended

Projected expiry passed 18 March 2018, 8.5 years ago.

1 sheet

Sheet 1

Every citation, both waysCites: the store holds 5 of 6

Citations
Document	Relation	Office	Category	Cited during	Relevant claims
EP0499560A1	Cites	European Patent Office (EPO)	A	Search report	1-12
EP0734132A2	Cites	European Patent Office (EPO)	X	Search report	1-5,7-11
EP0762702A1	Cites	European Patent Office (EPO)	X	Search report	1-5,7-11
EP0762703A1	Cites	European Patent Office (EPO)	XY	Search report	1-5,7-11
WO9600472A1	Cites	World Intellectual Property Organization (WIPO)	Y	Search report	6,12
MIGNONE, MORELLO: "CD3-OFDM: a novel demodulation scheme for fixed and mobile receivers", IEEE TRANSACTIONS ON COMMUNICATIONS, vol. 44, no. 9, September 1996 (1996-09-01), NEW YORK, US, pages 1144 - 1151, XP000628336, ISSN: 0090-6778	Non-patent	–	–	Search report	–
LUISE, REGGIANNINI: "Carrier frequency acquisition and tracking for OFDM systems", IEEE TRANSACTIONS ON COMMUNICATIONS, vol. 44, no. 11, November 1996 (1996-11-01), NEW YORK, US, pages 1590 - 1598, XP002081217, ISSN: 0090-6778	Non-patent	–	–	Search report	–
MENG-HAN HSIEG, CHE-HO WEI: "Channel estimation for OFDM systems based on comb-type pilot arrangement in frequency selective fading channels", IEEE TRANSACTIONS ON CONSUMER ELECTRONICS, vol. 44, no. 1, February 1998 (1998-02-01), New York, US, pages 217 - 225, XP000779270, ISSN: 0098-3063	Non-patent	–	–	Search report	–
RINNE, RENFORS: "Pilot spacing in orthogonal frequency division multiplexing systems on practical channels", IEEE TRANSACTIONS ON CONSUMER ELECTRONICS, vol. 42, no. 4, November 1996 (1996-11-01), New York, US, pages 959 - 962, XP000688713, ISSN: 0098-3063	Non-patent	–	–	Search report	–

7 members in 4 offices

This recordMember, by publication datePriority claim

Priority claims4

Priority claims
Document	Office	Kind	Date
9798197	Japan	A	1997-03-31
9798197	Japan	–	1997-03-31
9798197	–	–	–
JP19970097981	–	–	–

Members7

Family members, oldest first
Document	Office	Kind
JPH10215235A	Japan	A	1998-08-11
EP0869645A2	European Patent Office (EPO)	A2	1998-10-07
CN1202775A	China	A	1998-12-23
US6198781B1	United States of America	B1	2001-03-06
EP0869645A3This record	European Patent Office (EPO)	A3	2001-05-16
JP3405507B2	Japan	B2	2003-05-12
CN1187942C	China	C	2005-02-02

10 legal events, as the office reported them to INPADOC

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Events

Legal events, newest first
	Event	Code
2005-08-03	Application deemed to be withdrawnWithdrawn18D	18D
2005-06-17	Information on the status of an ep patent application or granted ep patentGrantedSTATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWNSTAA	STAA
2002-03-06	First examination report despatched17Q	17Q
2002-02-13	Designation fees paidDE FR GBAKX	AKX
2002-01-09	Request for examination filed17P	17P
2001-05-16	Designated contracting statesAK	AK
2001-05-16	Request for extension of the european patentAL;LT;LV;MK;RO;SIAX	AX
2001-03-30	Search report despatchedORIGINAL CODE: 0009013PUAL	PUAL
1998-10-07	Designated contracting statesAK	AK
1998-08-21	Public reference made under article 153(3) epc to a published international application that has entered the european phaseORIGINAL CODE: 0009012PUAI	PUAI