Title:
BASE STATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2008/041677
Kind Code:
A1
Abstract:
A base station device includes: a plurality of antennas; first precoding processing
means for multiplying a common pilot channel by a first weight; second precoding
processing means for multiplying the common pilot channel by a second weight
which is orthogonal to the first weight; and synthesis means which synthesizes
the common pilot channel multiplied by the first weight and the common pilot channel
multiplied by the second weight. The synthesized common pilot channel is transmitted
from the plurality of antennas.
Inventors:
HIGUCHI KENICHI (JP)
KISHIYAMA YOSHIHISA (JP)
SAWAHASHI MAMORU (JP)
KISHIYAMA YOSHIHISA (JP)
SAWAHASHI MAMORU (JP)
Application Number:
PCT/JP2007/069212
Publication Date:
April 10, 2008
Filing Date:
October 01, 2007
Export Citation:
Assignee:
NTT DOCOMO INC (JP)
HIGUCHI KENICHI (JP)
KISHIYAMA YOSHIHISA (JP)
SAWAHASHI MAMORU (JP)
HIGUCHI KENICHI (JP)
KISHIYAMA YOSHIHISA (JP)
SAWAHASHI MAMORU (JP)
International Classes:
H04J99/00; H04B7/02; H04B7/04; H04B7/10
Foreign References:
| JP2003134094A | 2003-05-09 | |||
| JP2006272343A | 2006-10-12 |
Other References:
NTT DOCOMO: "Physical Channels and Multiplexing in Evolved UTRA Downlink", 3GPP TSG RAN WG1 AD HOC ON LTE, vol. R1-050590, 21 June 2005 (2005-06-21), pages 1 - 24, XP003002909
HUA ZHANG YE LI: "A Tracking Approach for Precoded MIMO-OFDM Systems with Low Data Rate CSI Feedback", PERSONAL, INDOOR AND MOBILE RADIO COMMUNICATIONS, 2005. PIMRC 2005. IEEE, vol. 16TH, 14 September 2005 (2005-09-14), pages 241 - 245, XP010926819
LOVE D.J. AND HEATH R.W.: "Limited feedback unitary precoding for orthogonal space-time block codes", SIGNAL PROCESSING, IEEE TRANSACTIONS USEE ALSO ACOUSTICS, SPEECH, AND SIGNAL PROCESSING, IEEE TRANSACTIONS], vol. 53, no. 1, January 2005 (2005-01-01), pages 64 - 73, XP011123807
V.TAROKH; H.JAFARKHANI; R.CALDERBANK: "Space-Time Block Coding for Wireless Communications: Performance Results", IEEE J. SELECT. AREAS COMMUN., vol. 17, no. 3, March 1999 (1999-03-01), pages 451 - 460, XP002161389, DOI: doi:10.1109/49.753730
See also references of EP 2068479A4
HUA ZHANG YE LI: "A Tracking Approach for Precoded MIMO-OFDM Systems with Low Data Rate CSI Feedback", PERSONAL, INDOOR AND MOBILE RADIO COMMUNICATIONS, 2005. PIMRC 2005. IEEE, vol. 16TH, 14 September 2005 (2005-09-14), pages 241 - 245, XP010926819
LOVE D.J. AND HEATH R.W.: "Limited feedback unitary precoding for orthogonal space-time block codes", SIGNAL PROCESSING, IEEE TRANSACTIONS USEE ALSO ACOUSTICS, SPEECH, AND SIGNAL PROCESSING, IEEE TRANSACTIONS], vol. 53, no. 1, January 2005 (2005-01-01), pages 64 - 73, XP011123807
V.TAROKH; H.JAFARKHANI; R.CALDERBANK: "Space-Time Block Coding for Wireless Communications: Performance Results", IEEE J. SELECT. AREAS COMMUN., vol. 17, no. 3, March 1999 (1999-03-01), pages 451 - 460, XP002161389, DOI: doi:10.1109/49.753730
See also references of EP 2068479A4
Attorney, Agent or Firm:
ITOH, Tadahiko (Yebisu Garden Place Tower20-3, Ebisu 4-chom, Shibuya-Ku Tokyo 32, JP)
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