Title:
通信システムにおける多重レベル符号化方法及び多重レベル復号化方法並びに通信システムにおける多重レベル符号化装置並びに通信システムにおける多重レベル符号化方法のソフトウェアを記憶した装置
Document Type and Number:
Japanese Patent JP5153036
Kind Code:
B2
Abstract:
Improved techniques for multilevel coding of a stream of information bits in a communication system are disclosed. The stream of information bits is separated into portions, and each of the portions is associated with a different level of the multilevel coding. At least one code is applied to the portion of the information bits of each level in a designated subset of the full set of levels, such that the portions of the information bits for levels in the designated subset are coded while the portions of the information bits for levels not in the designated subset are uncoded. Both the coded portions of the information bits and the uncoded portions of the information bits are used to select modulation symbols for transmission in the system. Advantageously, the invention provides improved coding gain relative to conventional techniques, and can be configured to provide unequal error protection as well as time diversity for transmissions in the system.
Inventors:
Shi Young Chang
Filin roux
Filin roux
Application Number:
JP2001106868A
Publication Date:
February 27, 2013
Filing Date:
April 05, 2001
Export Citation:
Assignee:
Alcatel-Lucent USA Inc.
International Classes:
H03M13/05; H04L27/34; H03M13/15; H04B14/04; H04L1/00
Domestic Patent References:
| JP5260104A | ||||
| JP6292160A | ||||
| JP5175941A | ||||
| JP63237628A | ||||
| JP6350661A | ||||
| JP6216958A | ||||
| JP62243431A |
Other References:
M.C.Chiu et.al,Low-decoding-complexity TDM coded modulation with unequal error protection,Communications, IEE Proceedings,1997年12月,Vol.144 No.6 ,pp.372-380
Attorney, Agent or Firm:
Okabe
Koji Yoshizawa
Koji Yoshizawa