Adaptive channel coding using polarization

一种编码、信道的技术，应用在调整信道编码、应用多位奇偶校验位的检错编码、不等/自适应防错等方向，能够解决固定奇偶校验矩阵不是有效等问题

Active Publication Date: 2017-08-29
QUALCOMM INC
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  • Claims
  • Application Information

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Problems solved by technology

However, a fixed parity-check matrix may not be effective in a wide variety of noisy channel types

Method used

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  • Adaptive channel coding using polarization
  • Adaptive channel coding using polarization
  • Adaptive channel coding using polarization

Examples

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Embodiment Construction

[0046] The described features generally relate to improved systems, methods or apparatus for adaptive channel coding using polarization. A wireless device can adaptively select a parity check matrix to increase the reliability of signal transmission on a noisy channel. For example, polar codes can be used to "dynamically" build parity check matrices based on dynamic channel settings and signal-to-noise ratio (SNR) levels. Polar codes are low-complexity capable implementation codes for point-to-point discrete memoryless channels. Adaptive polar codes may be generated based on mutual information profiles of polar subchannels of the noisy channel.

[0047] Wireless transmissions may be sent on noisy channels. Noisy channels can be exploited using the conditional distribution P Y|X (y|x), where the input random variable X takes values ​​from the input alphabet and the output random variable Y takes values ​​from the output alphabet. In one example, the input alphabet is a bina...

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Abstract

Methods, systems, and devices are described for wireless communications at a wireless device. A wireless device may adaptively select a parity check matrix to increase the reliability of signal transmission by adapting to different channel statistics and channel types (e.g., erasure channels, channels with additive white Gaussian noise, and channels with discrete or continuous alphabets). For example, polarization codes (i.e., codes based on rows of a polarization matrix) may be used to construct parity check matrices on-the-fly given an estimation of dynamic channel conditions or diverse channel structures. The channel may be decomposed into polarized sub-channels corresponding to the polarization codes, and mutual information profiles may be determined for each of the polarized sub-channels. The parity check matrix corresponding to the polarization codes may be constructed based on the mutual information profile of all polarized sub-channels. The wireless device may encode or decode data based on the constructed parity check matrix.

Description

[0001] cross reference [0002] This patent application claims U.S. Patent Application No. 14 / 826,742, filed August 14, 2015, by Goela et al., entitled "Adaptive ChannelCoding Using Polarization"; and Goela et al., filed January 9, 2015 , U.S. Provisional Patent Application No. 62 / 101,864, entitled "Adaptive Channel Coding Using Polarization," each of which is assigned to the assignee thereon. technical field [0003] The following relates generally to wireless communications and, more specifically, to adaptive channel coding using polarization. Background technique [0004] Wireless communication systems are widely deployed to provide various types of communication content such as voice, video, packet data, messaging, broadcast, and so on. These systems may be multiple-access systems capable of supporting communication with multiple users by sharing available system resources (eg, time, frequency and power). Examples of such multiple-access systems include Code Division M...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03M13/11H03M13/13H03M13/35H04L1/00
CPCH03M13/1111H03M13/1191H03M13/13H03M13/353H04L1/0009H04L1/0041H04L1/0057H04B1/123H04B7/0413
Inventor N·戈拉V·纳拉姆帕蒂埃卡姆巴拉姆R·坦德拉J·B·索里阿加
Owner QUALCOMM INC
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