发明授权
- 专利标题: Apparatus, method and receiving terminal for LDPC decoding
- 专利标题(中): 用于LDPC解码的装置,方法和接收终端
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申请号: US13327997申请日: 2011-12-16
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公开(公告)号: US09008238B2公开(公告)日: 2015-04-14
- 发明人: Dalin Zhu , Ming Lei
- 申请人: Dalin Zhu , Ming Lei
- 申请人地址: CN Beijing
- 专利权人: NEC (China) Co., Ltd.
- 当前专利权人: NEC (China) Co., Ltd.
- 当前专利权人地址: CN Beijing
- 代理机构: Sughrue Mion, PLLC
- 优先权: CN201110034988 20110127
- 主分类号: H04L27/06
- IPC分类号: H04L27/06 ; H04L25/02 ; H04L1/00
摘要:
An apparatus and a method for Low-density parity-check (LDPC) decoding are provided. The apparatus for LDPC decoding comprises a post effective noise variance estimation unit for estimating a post effective noise variance based on a preamble in a received signal, an LLR calculation unit for calculating an LLR based on the estimated post effective noise variance, and a decoding unit for performing LDPC decoding based on the calculated LLR. The post effective noise variance estimation unit comprises a channel frequency response estimation unit for estimating a channel frequency response based on the preamble in the received signal, a noise variance estimation unit for estimating a noise variance based on the preamble in the received signal, and a post effective noise variance calculation unit for calculating the post effective noise variance based on the channel frequency response and the noise variance.