Title:
LIKELIHOOD VALUE CALCULATION DEVICE, LIKELIHOOD VALUE CALCULATION METHOD, AND RADIO SYSTEM
Document Type and Number:
WIPO Patent Application WO/2010/140448
Kind Code:
A1
Abstract:
A likelihood value calculation device comprises a likelihood value calculation unit (201) to which an equalization signal of a modulation signal is input, and which calculates a provisional likelihood value so that a bit value at each signal point becomes zero, with respect to each bit position, from the input equalization signal in accordance with a first control signal; an arithmetic inversion unit (202) which directly outputs the provisional likelihood value output from the likelihood value calculation unit (201) for each bit position in accordance with a second control signal, or which performs arithmetic inversion to the provisional likelihood value output from the likelihood value calculation unit (201) and outputs the inverted likelihood value; and an operation control unit (200) which retains control patterns for controlling the performances of at least the likelihood value calculation unit (201) and the arithmetic inversion unit (202) for respective combinations of radio systems and modulation systems, and generates the first and second control signals in accordance with a control pattern designated from the control patterns.
Inventors:
IGURA HIROYUKI (JP)
Application Number:
PCT/JP2010/057988
Publication Date:
December 09, 2010
Filing Date:
May 12, 2010
Export Citation:
Assignee:
NEC CORP (JP)
IGURA HIROYUKI (JP)
IGURA HIROYUKI (JP)
International Classes:
H03M13/25; H04L27/34
Domestic Patent References:
| WO2008038749A1 | 2008-04-03 |
Foreign References:
| JPH11275164A | 1999-10-08 | |||
| JP2008193729A | 2008-08-21 |
Other References:
D. SEETHALER ET AL.: "Low-complexity soft demodulation of MIMO-BICM using the line-search detector", PROCEEDINGS OF 2005 IEEE INTERNATIONAL CONFERENCE ON COMMUNICATIONS (ICC 2005), vol. 4, 2005, pages 2447 - 2451, XP010825613, DOI: doi:10.1109/ICC.2005.1494775
Attorney, Agent or Firm:
MIYAZAKI, Teruo et al. (JP)
Akio Miyazaki (JP)
Akio Miyazaki (JP)
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