Title:
TRANSMITTING/RECEIVING APPARATUS AND TRANSMITTING/RECEIVING METHOD
Document Type and Number:
WIPO Patent Application WO/2007/037008
Kind Code:
A1
Abstract:
A transmitting apparatus for data-modulating and transmitting a bit sequence of
binary data, wherein an HPSK data modulating part uses three successive bits (d0,d1,d2)
to produce two symbols consisting of I and Q complex components, and further data-modulates
the two symbols such that the phase difference therebetween is 90 degrees, thereby
sequentially generating and wireless-transmitting symbols having the same
signal point variation pattern as the HPSK spread sequence.
Inventors:
YANO TETSUYA (JP)
OBUCHI KAZUHISA (JP)
OBUCHI KAZUHISA (JP)
Application Number:
PCT/JP2005/017968
Publication Date:
April 05, 2007
Filing Date:
September 29, 2005
Export Citation:
Assignee:
FUJITSU LTD (JP)
YANO TETSUYA (JP)
OBUCHI KAZUHISA (JP)
YANO TETSUYA (JP)
OBUCHI KAZUHISA (JP)
International Classes:
H03M13/25; H03M13/29; H04B1/707; H04L1/00; H04L27/20; H04L27/36
Foreign References:
| JP2004080734A | 2004-03-11 | |||
| JP2002502163A | 2002-01-22 | |||
| JPH0983600A | 1997-03-28 |
Other References:
YAMAZATO T ET AL: "Performance evaluation of modified HPSK for wideband CDMA.", SPREAD SPECTRUM TECHNIQUES AND APPLICATIONS, 2000 IEEE SIXTH INTERNATIONAL SYMPOSIUM., vol. 2, 8 September 2000 (2000-09-08), pages 751 - 755, XP010516680
APARIN V ET AL: "Analysis of cross modulation in W-CDMA receivers.", MICROWAVE SYMPOSIUM DIGEST, IEEE MTT-S INTERNATIONAL., vol. 2, 11 June 2004 (2004-06-11), pages 787 - 790, XP010728218
ZEQIANG C ET AL: "An improved peak-to-average power ratio reduction scheme for HPSK in cdma2000.", PERSONAL, INDOOR AND MOBILE RADIO COMMUNICATIONS., vol. 2, 10 September 2003 (2003-09-10), pages 1876 - 1879, XP010678798
APARIN V ET AL: "Analysis of cross modulation in W-CDMA receivers.", MICROWAVE SYMPOSIUM DIGEST, IEEE MTT-S INTERNATIONAL., vol. 2, 11 June 2004 (2004-06-11), pages 787 - 790, XP010728218
ZEQIANG C ET AL: "An improved peak-to-average power ratio reduction scheme for HPSK in cdma2000.", PERSONAL, INDOOR AND MOBILE RADIO COMMUNICATIONS., vol. 2, 10 September 2003 (2003-09-10), pages 1876 - 1879, XP010678798
Attorney, Agent or Firm:
SAITO, Chimoto (Koei-Palace 202 14-10, Makuharihongo 1-chome, Hanamigawa-k, Chiba-shi Chiba, JP)
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