5G Decoding False Alarm Detection via Path Metric Averaging
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Solution Overview
Problem
In 5G wireless communication systems, false alarms occur due to noise in the channel, leading to erroneous decoding success determinations, which existing techniques struggle to effectively mitigate.
Innovation Solution
An apparatus and method in a receiving node that uses a detection metric based on the average of path metrics to determine decoding success and performs energy detection to decide on decoding, thereby reducing false alarms and preventing block error rate loss.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If energy detection is used to determine decoding success, then false alarm rate increases, but decoding reliability decreases
Solution Approach 1:
The patent introduces path metrics as an intermediary measure between energy detection and decoding success determination. Instead of directly using energy detection results, the system calculates path metrics for multiple decoding paths and uses these as a more reliable indicator of actual decoding success, thereby reducing false alarms while maintaining decoding reliability
Solution Approach 2:
The patent changes the detection parameter from simple energy level to path metric values. By computing path metrics that reflect the actual decoding process quality rather than just signal energy, the system achieves more accurate false alarm detection without compromising decoding reliability
2Stability of the object's composition
If path metrics of multiple decoding paths are averaged, then detection stability improves, but computational complexity increases
Solution Approach 1:
The patent applies partial action by selecting only the top L decoding paths with the highest metrics for averaging, rather than processing all possible decoding paths. This partial processing approach achieves sufficient detection stability while significantly reducing computational complexity compared to exhaustive path evaluation
Solution Approach 2:
The patent transforms the detection approach by changing from evaluating all possible paths to evaluating a limited set of top-L paths. This parameter change in the scope of evaluation maintains detection stability through averaging while controlling computational complexity through the limited path set
Data Source
AI summary
The present disclosure relates to a 5th (5G) generation) or pre-5G communication system for supporting a higher data transmission rate beyond a 4th (4G) generation communication system such as long term evolution (LTE). The present disclosure relates to false alarm detection of detecting in a wireless communication system, and an operating method of a receiving node may include receiving a signal from a transmitting node, obtaining a plurality of decoding paths by decoding bits contained in the received signal, and determining whether the decoding is successful based on a detection metric determined based on values representing path metrics of the plurality of the decoding paths.