Title:
MOBILE STATION DEVICE AND METHOD FOR SIGNAL DETECTION AND CHANNEL ESTIMATION
Document Type and Number:
WIPO Patent Application WO/2011/158757
Kind Code:
A1
Abstract:
Throughput characteristics are improved by removing interference from other cells without requiring complex processing. A reception unit and a signal detection and channel estimation unit (61) are provided. The reception unit receives a reception signal including signal components from a plurality of base station devices (BS), and the signal detection and channel estimation unit (61) conducts, for the reception signal, signal detection and channel estimation processing based on a factor graph. The signal detection and channel estimation unit (61) estimates, at the symbol level, interference components from a base station device of another cell other than a desired base station device included in the reception signal, and reuses the interference components in the signal detection and channel estimation processing based on the factor graph.
Inventors:
ABE TETSUSHI (JP)
TYRRELL ALEXANDER (DE)
GUNTHER AUER (DE)
TYRRELL ALEXANDER (DE)
GUNTHER AUER (DE)
Application Number:
PCT/JP2011/063397
Publication Date:
December 22, 2011
Filing Date:
June 10, 2011
Export Citation:
Assignee:
NTT DOCOMO INC (JP)
ABE TETSUSHI (JP)
TYRRELL ALEXANDER (DE)
GUNTHER AUER (DE)
ABE TETSUSHI (JP)
TYRRELL ALEXANDER (DE)
GUNTHER AUER (DE)
International Classes:
H04J99/00; H04B7/04
Foreign References:
| JP2007282120A | 2007-10-25 |
Other References:
TSUYOSHI KASHIMA ET AL.: "Recursive Channel Estimation based on the factor graph for Iterative-MAP Receiver of MIMO-OFDM Mobile Communications", IEICE TECHNICAL REPORT, vol. 105, no. 623, 22 February 2006 (2006-02-22), pages 97 - 102
HIROSHI SUZUKI: "Equalization, Interference Cancellation, and MIMO Transmission Technologies in Radio Communications", IEICE TECHNICAL REPORT, vol. 109, no. 305, 19 November 2009 (2009-11-19), pages 97 - 102
YUTAKA MURAKAMI ET AL.: "LDPC coded VIP-MIMO Spatial Multiplexing Systems", IEICE TECHNICAL REPORT, vol. 107, no. 192, 16 August 2007 (2007-08-16), pages 123 - 128
HIROSHI SUZUKI: "Equalization, Interference Cancellation, and MIMO Transmission Technologies in Radio Communications", IEICE TECHNICAL REPORT, vol. 109, no. 305, 19 November 2009 (2009-11-19), pages 97 - 102
YUTAKA MURAKAMI ET AL.: "LDPC coded VIP-MIMO Spatial Multiplexing Systems", IEICE TECHNICAL REPORT, vol. 107, no. 192, 16 August 2007 (2007-08-16), pages 123 - 128
Attorney, Agent or Firm:
AOKI, Hiroyoshi et al. (JP)
Hiroyoshi Aoki (JP)
Hiroyoshi Aoki (JP)
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