发明授权
US07325174B2 Pre-processing apparatus using nonuniform quantization of channel reliability value and LDPC decoding system using the same
失效
使用信道可靠性值的非均匀量化的预处理装置和使用其的LDPC解码系统
- 专利标题： Pre-processing apparatus using nonuniform quantization of channel reliability value and LDPC decoding system using the same
- 专利标题（中）： 使用信道可靠性值的非均匀量化的预处理装置和使用其的LDPC解码系统
-
申请号： US10888167申请日： 2004-07-09
-
公开(公告)号： US07325174B2公开(公告)日： 2008-01-29
- 发明人: Eun-A Choi , Nae-Soo Kim , Ji-Won Jung , Sung-Jun Cho , Tae-Gil Lee , Sang-Jin Park , In-Ki Lee
- 申请人： Eun-A Choi , Nae-Soo Kim , Ji-Won Jung , Sung-Jun Cho , Tae-Gil Lee , Sang-Jin Park , In-Ki Lee
- 申请人地址： KR
- 专利权人： Electronics and Telecommunications Research Institute
- 当前专利权人： Electronics and Telecommunications Research Institute
- 当前专利权人地址： KR
- 代理机构： Blakely, Sokoloff, Taylor & Zafman
- 优先权： KR10-2003-0097948 20031226; KR10-2004-0041836 20040608
- 主分类号： G06F11/00
- IPC分类号： G06F11/00
摘要：
The present invention relates to a pre-processing apparatus using nonuniform quantization of a channel reliability value and a low density parity check (LDPC) decoding system. The pre-processing apparatus can present degradation in performance and be embodied simply by performing decoding pre-process by estimating a discrete channel reliability value (Lc*) through nonuniform quantization of a channel reliability value based on a relations between a bit error rate (BER) estimated through a simulation performed in advance and a standard deviation (σ) of channel noise within a predetermined range of noise estimation error and p, and bit-shifting a receiving signal as much as a discrete channel reliability value. The pre-processing apparatus includes: a channel reliability measuring unit, a nonuniform quantizing unit, a sign bit adding unit, a bit shifting unit.
公开/授权文献
信息查询
