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Non-linear log-likelihood ratio quantization techniques for LDPC decoder architecture

A technology of log-likelihood ratio and a posteriori log-likelihood, applied in the field of nonlinear log-likelihood ratio quantization technology for LDPC decoder architecture, which can solve the problems of data retransmission, data unavailability, etc.

Inactive Publication Date: 2019-06-14
QUALCOMM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although the number of errors may be relatively low, even a small number of errors or small levels of distortion may cause the data to be unusable, or in the case of a transmission error, retransmission of the data may have to be done

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  • Non-linear log-likelihood ratio quantization techniques for LDPC decoder architecture
  • Non-linear log-likelihood ratio quantization techniques for LDPC decoder architecture
  • Non-linear log-likelihood ratio quantization techniques for LDPC decoder architecture

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Embodiment Construction

[0035] Aspects of the present disclosure provide apparatus, methods, processing systems and computer program products for encoding New Radio (NR) (New Radio Access Technology). New Radio (NR) may refer to a radio configured to operate according to a new air interface or a fixed transport layer. NR can include enhanced mobile broadband (eMBB) targeting wide bandwidths (e.g., 80 MHz and wider), millimeter wave (mmW) targeting high carrier frequencies (e.g., 60 GHz), non-backward compatible MTC technology targeting massive MTC (mMTC), and ultra-reliable low-latency communication (URLLC) targeting mission-critical tasks. For these general topics, different techniques are considered, such as coding, low density parity check (LDPC) and polarization. An NR cell may refer to a cell operating according to a new air interface or a fixed transport layer. An NR Node B (eg, a 5G Node B) may correspond to one or more Transceiver Points (TRPs).

[0036] In general, certain aspects of the ...

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Abstract

Certain aspects of the present disclosure generally relate to methods and apparatus for decoding low density parity check (LDPC) codes, and more particularly to non-linear log-likelihood ratio quantization techniques for low-density parity-check (LDPC) decoder architecture. Aspects of the present disclosure relate to techniques that enable a posteriori LLRs to be stored in metric storage, utilizing a fixed number of bits, that is less than a fixed number of bits used to represent the a posteriori LLRs in data path processors performing LDPC decoding. In particular, certain aspects relate to non-linear quantization techniques (using a lookup table LUT or hardware such as logic gates) to quantize the bits used to represent the a posteriori LLRs used by data path processors to a reduced number of bits for storage in metric storage.

Description

[0001] Cross References to Related Applications [0002] This application claims priority to U.S. Application No. 15 / 619,232, filed June 9, 2017, which claims priority and benefit from U.S. Provisional Patent No. 62 / 416,589, filed November 2, 2016 . The contents of the above two applications are incorporated herein by reference in their entirety. technical field [0003] In general, certain aspects of the present disclosure relate to methods and apparatus for wireless communications, and more specifically, certain aspects of the present disclosure relate to non-linear Log-likelihood ratio quantization technique. Background technique [0004] Wireless communication systems are widely deployed to provide various types of communication content such as voice, data, and so on. These systems may be multiple-access systems capable of supporting communication with multiple users by sharing available system resources (eg, bandwidth and transmit power). Examples of such multiple a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03M13/11H03M13/00
CPCH03M13/6502H03M13/6575H03M13/6591H03M13/6594H03M13/1111H03M13/114H03M13/116H03M13/1188H04L1/005H04L1/0057H03M13/1105H03M13/1125H04L1/0054
Inventor G·瓦拉特卡尔V·隆克T·J·理查森Y·曹
Owner QUALCOMM INC