OAM Reception Apparatus with Interference Compensation
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Solution Overview
Problem
There is no method for receiving signals wirelessly transmitted by a combination of OAM transmission and dual polarized wave transmission with inter-polarization interference compensation.
Innovation Solution
An OAM reception apparatus and method that includes reception antenna elements, an OAM reception unit, and an interference compensation unit, which execute OAM reception processing and interference compensation processing using OAM reception weight vectors, respectively, on vertically and horizontally polarized component signals obtained by polarization separating and down-converting received radio signals, with these units being independent of each other.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If OAM transmission and dual polarized wave transmission are combined, then transmission capacity is improved, but inter-polarization interference occurs
Solution Approach 1:
The reception apparatus segments the reception process into independent OAM reception processing and interference compensation processing. The OAM reception unit processes signals using OAM reception weight vectors, while the interference compensation unit separately compensates for inter-polarization interference, allowing both functions to operate independently and efficiently
Solution Approach 2:
The interference compensation unit acts as an intermediary that specifically targets and removes the harmful inter-polarization interference component from the received signals, allowing the OAM reception unit to process the cleaned signals without contamination from polarization interference
2Device complexity
If spatial demultiplexing processing and inter-polarization interference compensation processing are executed in series, then processing is simplified, but processing time increases
Solution Approach 1:
The patent transforms the static sequential processing structure into a dynamic parallel processing structure. The OAM reception unit and interference compensation unit operate simultaneously on the received signals, with the interference compensation unit processing signals from multiple antenna elements in parallel, thereby reducing total processing time while maintaining structural clarity
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables the reception of signals wirelessly transmitted by a combination of OAM transmission and dual polarized wave transmission with effective inter-polarization interference compensation.
Implementation Method 1
a plurality of reception antenna elements configured to receive a plurality of radio signals respectively transmitted from a plurality of transmission antenna elements
Implementation Method 2
polarization separating and down-conversion on a plurality of reception radio signals
Data Source
AI summary
An OAM reception apparatus (30) includes an OAM reception unit (34) and an interference compensation unit (35C) that are independent of each other. The OAM reception unit (34) and the interference compensation unit (35C) execute “OAM reception processing” and “interference compensation processing”, respectively, based on a plurality of vertical component signals and a plurality of horizontal component signals obtained by performing polarization separating and down-conversion on a plurality of reception radio signals received by a plurality of reception antenna elements (31-1 to 31-4).