WIRELESS COMMUNICATION METHOD AND RECEIVER

WIPO Patent Application WO/2007/023917

A1

[PROBLEMS] In OFDM communication scheme, the estimation of a propagation path is to be performed with high precision even in the vicinity of an edge of a sector, and even if there exist any terminals that cannot perform MIMO reception, a preamble pattern, which prevents the communication performance of the whole system from degrading, is to be generated and transmitted. [MEANS FOR SOLVING PROBLEMS] A wireless communication method using OFDM communication scheme, wherein code sequences are generated in such a manner that a code sequence, which is used for estimating a propagation path in one of an arbitrary set of sectors, is orthogonal to a code sequence used for estimating a propagation path in another sector and that parts of the components of the code sequences are orthogonal to each other, and wherein both in a case of performing the data communication of a single channel using a single or a plurality of antennas and in a case of performing the data communications of a plurality of channels using a plurality of antennas, the same method is used to assign the generated code sequences to a subcarrier, and symbols are transmitted to mobile station apparatuses existing in the respective sectors.

HAMAGUCHI YASUHIRO
SHITARA SHOICHI
KUBOTA MINORU

PCT/JP2006/316644

March 01, 2007

August 24, 2006

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SHARP KK (JP)
HAMAGUCHI YASUHIRO
SHITARA SHOICHI
KUBOTA MINORU

H04J99/00; H04B7/06; H04J11/00

JP2005094255A	2005-04-07
JP2005124125A	2005-05-12
JP2005506757A	2005-03-03

NTT DOCOMO: "Pilot Channel and Scrambling Code in Evolved UTRA Downlink", 3GPP R1-050589, 21 June 2005 (2005-06-21), pages 1 - 24

FUKUCHI, Takeo (Shibuya-ku, Tokyo, JP)

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