Invention Application
- Patent Title: NON-UNIFORM QUANTIZATION OF LOG LIKELIHOOD RATIOS
- Patent Title (中): 日志比例的非统一量化
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Application No.: US14983729Application Date: 2015-12-30
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Publication No.: US20160226528A1Publication Date: 2016-08-04
- Inventor: Semih Serbetli , Marinus van Splunter
- Applicant: NXP B.V.
- Priority: EP15153340.3 20150130
- Main IPC: H03M13/45
- IPC: H03M13/45 ; G06F11/10
Abstract:
A method of processing a signal by non-uniform quantization of log likelihood ratios is disclosed. In particular a disclosed method comprising the steps of: receiving (110) a plurality of bits (12); calculating (120) a log likelihood ratio (22), known as a LLR, for each bit; providing (130) a LLR value (22) for each bit based on the calculated LLR; quantizing (140) the LLR values into a plurality of quantization bins, each quantization bin having: a width representative of one or more LLR values; and an index value (32) having a bit length; and associating (150) each bit with the index value (32) that corresponds to its LLR value (22), wherein the width of each quantization bin is non-uniform. This compresses the LLR values (22) in a more efficient manner, requiring lower memory usage and/or lower bandwidth. A chip for a receiver and a communication system comprising one or more receivers are also disclosed.
Public/Granted literature
- US10256846B2 Non-uniform quantization of log likelihood ratios Public/Granted day:2019-04-09
Information query
IPC分类:
