Bootstrap Signal Decoding via Iterative Channel Gain Correction

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Solution Overview

Problem

Current technologies face challenges in accurately decoding bootstrap signals due to inadequate channel gain estimation, which affects maximum-likelihood decoding in broadcast communication systems.

Innovation Solution

An apparatus and method that calculate and correct the relative cyclic shift and channel gain estimate of a received bootstrap signal, using iterative maximum-likelihood decoding with IFFT operations and complex conjugate sequences to improve channel gain accuracy.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If conventional channel gain estimation methods are used for bootstrap signal decoding, then the decoding process can be completed, but the decoding accuracy is insufficient due to inadequate channel gain estimation

Engineering Contradiction:
Improvechannel gain estimation accuracyVSAvoiddecoding reliability
Core Design Contradiction:
Measurement precisionVSReliability

Solution Approach 1:

The patent implements an iterative feedback mechanism where the decoder initially estimates channel gain, decodes the bootstrap signal, extracts signaling information, re-estimates channel gain using the extracted information, and repeats this process. Each iteration refines the channel gain estimation by incorporating newly decoded signaling information, creating a closed-loop feedback system that progressively improves estimation accuracy and decoding reliability

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The patent performs preliminary channel gain estimation before full decoding, uses this initial estimate to decode the bootstrap signal and extract signaling information, then uses this extracted information to refine the channel gain estimation. This preliminary action sequence enables the system to progressively improve estimation accuracy through multiple passes, where each pass builds upon the previous results

Inventive Principle:
Principle #10Preliminary action

2Reliability

If maximum-likelihood decoding is applied to bootstrap signals, then decoding performance can be improved, but accurate channel gain estimation is required which is not available in conventional methods

Engineering Contradiction:
Improvedecoding performanceVSAvoidchannel gain estimation accuracy
Core Design Contradiction:
ReliabilityVSMeasurement precision

Solution Approach 1:

The patent creates a feedback loop where maximum-likelihood decoding is performed using initial channel gain estimates, the decoded signaling information is extracted, and this information is used to refine the channel gain estimates. The refined estimates are then fed back into the maximum-likelihood decoder for improved performance, allowing the system to achieve accurate decoding without requiring perfectly accurate initial channel gain estimates

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The patent makes the channel gain estimation dynamic and adaptive rather than static. The estimation process evolves through multiple iterations, with each iteration updating the channel gain values based on newly decoded signaling information. This dynamic approach allows the system to adapt to the actual channel conditions revealed through decoding, improving both reliability and measurement precision

Inventive Principle:
Principle #15Dynamics

Data Source

PatentUS11032115B2Device and method for decoding bootstrap signal
Publication Date: 2021.06.08 ELECTRONICS & TELECOMM RES INST
  • US11032115B2 patent drawing
  • US11032115B2 patent drawing
  • US11032115B2 patent drawing

AI summary

Disclosed herein are an apparatus and method for decoding a bootstrap signal. The apparatus for decoding a bootstrap signal according to an embodiment of the present invention includes an operation unit for calculating the relative cyclic shift and the channel gain estimate of a received bootstrap signal and correcting the channel gain estimate using the relative cyclic shift, and a decoding unit for decoding the bootstrap signal using the corrected channel gain estimate.