Title:
TRANSMISSION SYSTEM, TRANSMISSION METHOD, TRANSMITTER, RECEIVER, AND DECODING METHOD
Document Type and Number:
WIPO Patent Application WO/2007/145188
Kind Code:
A1
Abstract:
A transmission system achieving both the effect of orthogonality between temporal
block codes in a distorted transmission channel and the effect of path diversity.
The transmission system comprises a transmitter for transmitting a signal by
multiplying a code which is a temporal block code composed of time-series symbols
by an information signal (S[n]), transmitting the product signal, multiplying
the temporal block codes by the information signal, multiplexing the codes along
the time axis, and transmitting the multiplexed codes and a receiver having a
reception filter. In the transmission system, the characteristics of the reception
filter are set to those of an adjoint matrix HH of a matrix H which is the
impulse response matrix of the transmission channel, and the temporal block
code is set to the unique code E_i[n] represented by the eigenvector of the matrix
HHH expressing the connection system composed of the transmission
channel and the reception filter.
Inventors:
FURUKAWA HIROSHI (JP)
Application Number:
PCT/JP2007/061772
Publication Date:
December 21, 2007
Filing Date:
June 12, 2007
Export Citation:
Assignee:
UNIV KYUSHU NAT UNIV CORP (JP)
FURUKAWA HIROSHI (JP)
FURUKAWA HIROSHI (JP)
International Classes:
H04B1/707; H04B7/04; H04J11/00; H04J13/00; H04J99/00
Foreign References:
| JP2004235916A | 2004-08-19 | |||
| JP2005328310A | 2005-11-24 |
Other References:
KAZUMI MIYASHITA ET AL.: "High Data-rate Transmission with Eigenbeam-space Division Multiplexing (E-SDM) In a MIMO Channel", VEHICULAR TECHNOLOGY CONFERENCE, 2002. PROCEEDINGS. VTC 2002-FALL. 2002 IEEE 56TH, vol. 3, 24 September 2002 (2002-09-24), XP010608639
I. GHAURI; D. SLOCK: "Linear receivers for DS-CDMA downlink exploiting orthogonality of spreading sequences", PROC. ASILOMAR CONFERENCE ON SIGNALS, SYSTEMS AND COMPUTERS, vol. 1, November 1998 (1998-11-01), pages 650 - 654, XP010324192, DOI: doi:10.1109/ACSSC.1998.750943
K. HOOLI; M. LATVA-AHO; M. JUNTTI: "Multiple access interference suppression in CDMA with linear chip equalizers in WCDMA downlink receivers", PROC. GLOBECOM 99, VOL. GENERAL CONFERENCE (PART A, December 1999 (1999-12-01), pages 467 - 471
F. ADACHI; T. SATO; T. ITAGAKI: "Performance of multicode DS-CDMA using frequency domain equalization in a frequency selective fading channel", ELECTRONICS LETTERS, vol. 39, no. 2, January 2003 (2003-01-01), pages 239 - 241
F. ADACHI; K. TAKEDA; H. TOMEBA: "Frequency-Domain Pre-Equalization for Multicode Direct Sequence Spread Spectrum Signal Transmission", IEICE TRANS. COMM., vol. E88-B, no. 7, July 2005 (2005-07-01), pages 3078 - 3081, XP001231895, DOI: doi:10.1093/ietcom/e88-b.7.3078
I. GHAURI; D. SLOCK: "Linear receivers for DS-CDMA downlink exploiting orthogonality of spreading sequences", PROC. ASILOMAR CONFERENCE ON SIGNALS, SYSTEMS AND COMPUTERS, vol. 1, November 1998 (1998-11-01), pages 650 - 654, XP010324192, DOI: doi:10.1109/ACSSC.1998.750943
K. HOOLI; M. LATVA-AHO; M. JUNTTI: "Multiple access interference suppression in CDMA with linear chip equalizers in WCDMA downlink receivers", PROC. GLOBECOM 99, VOL. GENERAL CONFERENCE (PART A, December 1999 (1999-12-01), pages 467 - 471
F. ADACHI; T. SATO; T. ITAGAKI: "Performance of multicode DS-CDMA using frequency domain equalization in a frequency selective fading channel", ELECTRONICS LETTERS, vol. 39, no. 2, January 2003 (2003-01-01), pages 239 - 241
F. ADACHI; K. TAKEDA; H. TOMEBA: "Frequency-Domain Pre-Equalization for Multicode Direct Sequence Spread Spectrum Signal Transmission", IEICE TRANS. COMM., vol. E88-B, no. 7, July 2005 (2005-07-01), pages 3078 - 3081, XP001231895, DOI: doi:10.1093/ietcom/e88-b.7.3078
Attorney, Agent or Firm:
HADATE, Koji (FUKUOKA8-33, Momochihama 3-choume, Sawara-ku, Fukuoka-sh, Fukuoka 01, JP)
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