Title:
RECEIVER
Document Type and Number:
WIPO Patent Application WO/2013/065821
Kind Code:
A1
Abstract:
In order to improve the accuracy of estimating a covariance matrix (RI+N) on the basis of a data signal, in this interference rejection combining (IRC) receiver (10): a data signal is configured in such a manner as to be transmitted in a pair of space frequency block codes (SFBCs) comprising two resource elements; an estimated covariance matrix (RI+N) is configured in such a manner as to include a first covariance matrix (RI+N) (2m) comprising desired signal components in even-numbered resource elements in the pair of SFBCs, and a second covariance matrix (RI+N) (2m + 1) comprising desired signal components in odd-numbered resource elements in space frequency block coding scheme units; and a covariance matrix averaging unit (13) and a covariance matrix generation unit (16) are configured in such a manner as to perform an averaging process on the elements inside the first covariance matrix (RI+N) (2m) and the elements inside the second covariance matrix (RI+N) (2m + 1), as a predetermined process.
Inventors:
SAGAE YUTA (JP)
OHWATARI YUSUKE (JP)
MIKI NOBUHIKO (JP)
OHWATARI YUSUKE (JP)
MIKI NOBUHIKO (JP)
Application Number:
PCT/JP2012/078470
Publication Date:
May 10, 2013
Filing Date:
November 02, 2012
Export Citation:
Assignee:
NTT DOCOMO INC (JP)
International Classes:
H04J99/00; H04B7/02; H04B7/08; H04J11/00
Other References:
RENESAS MOBILE EUROPE: "Interference aware receiver modeling at system level", 3GPP TSG-RAN WG1#65 R1-111562, 9 May 2011 (2011-05-09) - 13 May 2011 (2011-05-13), BARCELONA, SPAIN, XP050491209
NTT DOCOMO: "Reference receiver structure for interference mitigation on Enhanced performance requirement for LTE UE", 3GPP TSG-RAN WG4#60BIS R4-115213, 10 October 2011 (2011-10-10) - 14 October 2011 (2011-10-14), ZHUHAI, CN, XP050544275
NTT DOCOMO: "Influence of Channel Estimation Error on MMSE-IRC Receiver", 3GPP TSG-RAN WG1#65 RL-111639, 9 May 2011 (2011-05-09) - 13 May 2011 (2011-05-13), BARCELONA, SPAIN, XP050491275
YUSUKE OWATARI ET AL.: "Investigation of Interference Rejection Combining Receiver to Suppress Inter-cell Interference in LTE- Advanced Downlink", IEICE TECHNICAL REPORT, 14 July 2011 (2011-07-14), XP008173049
YUSUKE OWATARI ET AL.: "Investigation on Interference Rejection Combining Receiver in Asynchronous Network for LTE-Advanced Downlink", IEICE TECHNICAL REPORT, 19 October 2011 (2011-10-19), pages 273 - 278, XP008173050
YUSUKE OHWATARI ET AL.: "Performance of Advanced Receiver Employing Interference Rejection Combining to Suppress Inter-Cell Interference in LTE-Advanced Downlink", VEHICULAR TECHNOLOGY CONFERENCE (VTC FALL), 5 September 2011 (2011-09-05), XP032029680
3GPP: "Reference receiver structure for interference mitigation on Enhanced performance requirement for LTE UE (3GP PR4-115213)", 3GPP, 10 October 2011 (2011-10-10) - 14 October 2011 (2011-10-14)
NTT DOCOMO: "Reference receiver structure for interference mitigation on Enhanced performance requirement for LTE UE", 3GPP TSG-RAN WG4#60BIS R4-115213, 10 October 2011 (2011-10-10) - 14 October 2011 (2011-10-14), ZHUHAI, CN, XP050544275
NTT DOCOMO: "Influence of Channel Estimation Error on MMSE-IRC Receiver", 3GPP TSG-RAN WG1#65 RL-111639, 9 May 2011 (2011-05-09) - 13 May 2011 (2011-05-13), BARCELONA, SPAIN, XP050491275
YUSUKE OWATARI ET AL.: "Investigation of Interference Rejection Combining Receiver to Suppress Inter-cell Interference in LTE- Advanced Downlink", IEICE TECHNICAL REPORT, 14 July 2011 (2011-07-14), XP008173049
YUSUKE OWATARI ET AL.: "Investigation on Interference Rejection Combining Receiver in Asynchronous Network for LTE-Advanced Downlink", IEICE TECHNICAL REPORT, 19 October 2011 (2011-10-19), pages 273 - 278, XP008173050
YUSUKE OHWATARI ET AL.: "Performance of Advanced Receiver Employing Interference Rejection Combining to Suppress Inter-Cell Interference in LTE-Advanced Downlink", VEHICULAR TECHNOLOGY CONFERENCE (VTC FALL), 5 September 2011 (2011-09-05), XP032029680
3GPP: "Reference receiver structure for interference mitigation on Enhanced performance requirement for LTE UE (3GP PR4-115213)", 3GPP, 10 October 2011 (2011-10-10) - 14 October 2011 (2011-10-14)
Attorney, Agent or Firm:
MIYOSHI, Hidekazu et al. (JP)
Hidekazu Miyoshi (JP)
Hidekazu Miyoshi (JP)
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