Multi-Antenna Relay Interference Cancellation
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Solution Overview
Problem
Multi-antenna relay devices face significant interference issues due to feedback signals from multiple transmitting antennas, leading to signal oscillation and reduced communication service quality.
Innovation Solution
The implementation of interference cancellation units between receiving and transmitting antennas, which generate and cancel estimated interference signals in real-time using processing units with delay, filter coefficient generation, and modeling units, to minimize signal interference across all channels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple transmitting/receiving antennas are adopted to achieve high transmission rate, then transmission rate is improved, but feedback signals and interference signals significantly increase causing oscillation problems
Solution Approach 1:
The patent converts harmful feedback signals into useful information by using them to generate interference cancellation signals. The received signal containing feedback is processed to extract interference components, which are then used to create cancellation signals that eliminate the harmful feedback effects, transforming the problem into a solution.
Solution Approach 2:
The patent introduces an intermediary interference cancellation unit that mediates between the receiving antenna and the signal processing chain. This unit receives the contaminated signal, extracts interference components, generates cancellation signals, and outputs cleaned signals, acting as a mediator that separates useful information from harmful feedback.
2Quantity of substance
If multiple transmitting/receiving antennas are adopted to achieve large bit transmission, then data capacity is improved, but interference signals from multiple paths increase making it difficult to cope with oscillation problems
Solution Approach 1:
The patent converts harmful multi-path interference signals into useful cancellation signals by processing the received signal to extract interference components and generating corresponding cancellation signals that eliminate the harmful effects while preserving the useful data transmission capability.
Solution Approach 2:
The patent segments the received signal into useful signal components and harmful interference components through the interference cancellation unit. By separating and independently processing these components, the system can maintain high data capacity while selectively eliminating interference from multiple paths.
3Reliability
If real-time interference cancellation is implemented across all channels, then signal quality is improved, but device complexity increases due to multiple processing units
Solution Approach 1:
The patent implements a universal interference cancellation unit that can process multiple channels simultaneously. This multi-functional unit handles interference cancellation across all channels through a unified processing architecture, avoiding the need for separate processing units for each channel and thereby reducing overall device complexity while maintaining signal quality.
Data Source
AI summary
Provided is a multi-antenna relay device. The multi-antenna relay device having first to n-th (n is a natural number of 2 or more) channel formed between receiving antennas and transmitting antennas corresponding to each other, comprising: first to n-th channel interference cancellation units, respectively, included in a corresponding channel among the first to n-th channels and canceling first to n-th channel interference signals corresponding to signals radiated through the first to n-th channels from signal input into the corresponding channel in real time.