WIRELESS COMMUNICATION BASE STATION APPARATUS, WIRELESS COMMUNICATION MOBILE STATION APPARATUS AND PILOT SIGNAL SEQUENCE ALLOCATING METHOD IN MULTICARRIER COMMUNICATION

Title:

WIRELESS COMMUNICATION BASE STATION APPARATUS, WIRELESS COMMUNICATION MOBILE STATION APPARATUS AND PILOT SIGNAL SEQUENCE ALLOCATING METHOD IN MULTICARRIER COMMUNICATION

Document Type and Number:

WIPO Patent Application WO/2007/013560

Kind Code:

A1

Abstract:

A wireless communication apparatus wherein even if the number of sectors or cells is increased in a multicarrier communication, the orthogonality between the pilot signal sequences between adjacent sectors or cells can be prevented from collapsing due to a frequency selectivity fading, thereby improving the reception characteristic. In this apparatus, modulating parts (102-1 to 102-m) modulate encoded data to generate data symbols, and a pilot symbol generating part (103) modulates a received pilot signal sequence to generate pilot symbols. A multiplexing part (104) time multiplexes the pilot symbols and the data symbols. OVSF sequences are used as the pilot signal sequences. The pilot symbol generating part (103) receives an OVSF sequence, among a plurality of OVSF sequences having the same sequence length but being orthogonal to each other, which is orthogonal to an OVSF sequence used as a pilot signal sequence in an adjacent sector and which is orthogonal to that OVSF sequence in a unit shorter than the sequence length.

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Inventors:

NISHIO AKIHIKO
HOSHINO MASAYUKI
IMAMURA DAICHI

Application Number:

PCT/JP2006/314902

Publication Date:

February 01, 2007

Filing Date:

July 27, 2006

Export Citation:

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Assignee:

MATSUSHITA ELECTRIC IND CO LTD (JP)
NISHIO AKIHIKO
HOSHINO MASAYUKI
IMAMURA DAICHI

International Classes:

H04J1/02; H04J11/00; H04J13/00; H04J13/20; H04W16/02; H04W16/30; H04W72/04; H04W88/08

Foreign References:

JP2004208254A	2004-07-22
JP2005220616A	2005-08-18

Other References:

NTT DOCOMO: "Pilot Channel and Scrambling Code in Evolved UTRA Downlink", 3GPP TSG RAN AD HOCON LTE, SOPHIA ANTIPOLIS, FRANCE, 20 June 2005 (2005-06-20) - 21 June 2005 (2005-06-21), pages 1 - 4, XP003001798, Retrieved from the Internet

Attorney, Agent or Firm:

WASHIDA, Kimihito (Shintoshicenter Bldg. 24-1, Tsurumaki 1-chome, Tama-sh, Tokyo 34, JP)

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