Title:
通信信号処理における簡単化した期待シンボル値算出および干渉除去のための方法と装置
Document Type and Number:
Japanese Patent JP5576870
Kind Code:
B2
Abstract:
A computationally-simplified approach to expected symbol value determination is based on classifying soft bit information corresponding to symbols in a received communication signal as being reliable or unreliable, and computing expected symbol values for the symbols based on the classified soft bit information. Classification can be carried out by quantizing the soft bit information to coarsely indicate whether individual symbol bits are known with high or low probability. Using quantized soft bit information greatly simplifies expected symbol value calculation, yet the calculated values still reflect a scaling corresponding to the underlying reliability of the soft bit information. Where the expected symbol values are computed for interfering symbols in a composite signal that also includes desired signals, preserving the underlying reliability knowledge in this manner effectively scales the amount interference cancellation applied to the composite signal in dependence on the reliability to which the interfering signal values are known.
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Inventors:
Rey Al and Andres
Application Number:
JP2011531451A
Publication Date:
August 20, 2014
Filing Date:
October 09, 2009
Export Citation:
Assignee:
telephone アクチー -- a mullet -- get El M Ericsson (パブル)
International Classes:
H04L27/38; H04J99/00; H04L27/01
Attorney, Agent or Firm:
Yasunari Otsuka
Shiro Takayanagi
Yasuhiro Otsuka
Hideji Kimura
Shimoyama 治
Shiro Takayanagi
Yasuhiro Otsuka
Hideji Kimura
Shimoyama 治