Title:
プリコーディングで対数-尤度比を決定するための方法および装置
Document Type and Number:
Japanese Patent JP4116562
Kind Code:
B2
Abstract:
An apparatus and method for recovering data transmitted in a wireless communication system is claimed. A plurality of signal points, the signal point including a plurality of modulation symbols from a plurality of coded bits, is received. A first subset of signal points for which a bit is equal to a first value and a second subset of signal points for which the bit is equal to a second value is determined. The first and second subsets are signal points from an expanded signal constellation. The probability that the bit is equal to the first value or the second value is determined as a function of the received signal point. A soft decision symbol may then be determined, based on the probability that the bit is equal to the first value or the second value. The soft decision symbols may be represented as log likelihood ratios.
Inventors:
Gupta, Aroku
Application Number:
JP2003548417A
Publication Date:
July 09, 2008
Filing Date:
November 27, 2002
Export Citation:
Assignee:
QUALCOMM INCORPORATED
International Classes:
H03M13/25; H03M13/39; H04J11/00; H04L1/00; H04L25/03; H04L25/06; H04L27/14; H04L27/26
Domestic Patent References:
| JP2001500713A | ||||
| JP9284348A |
Attorney, Agent or Firm:
Takehiko Suzue
Satoshi Kono
Makoto Nakamura
Yoshihiro Fukuhara
Sadao Muramatsu
Ryo Hashimoto
Satoshi Kono
Makoto Nakamura
Yoshihiro Fukuhara
Sadao Muramatsu
Ryo Hashimoto