Receiving Device Signal Adjustment via Correlation-Based Delay Offset
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Solution Overview
Problem
In mobile communication systems, existing diversity systems like MRC fail to accurately account for noise, interference, and delay offsets between signals received from multiple antennas, leading to suboptimal performance.
Innovation Solution
A method and device that calculate correlation values between signals from multiple antennas to determine a delay offset value, which is then used to adjust the received signals, thereby correcting path delay offsets and improving IRC performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the MRC method is used to combine received signals, then the signal combining is simplified, but the accuracy of noise and interference estimation deteriorates
Solution Approach 1:
The patent segments the signal processing into distinct stages: first calculating correlation values between received signals from multiple antennas, then using these correlation values to determine delay offset values, and finally adjusting the combined signal based on these offsets. This segmentation allows accurate noise and interference estimation to be performed separately from the signal combining process, resolving the contradiction between simplicity and accuracy.
Solution Approach 2:
The patent performs preliminary actions by calculating correlation values and determining delay offset values before the final signal combining process. This preliminary processing of delay offsets ensures that the MRC combining can proceed with simplified operations while the accuracy requirements are met through the pre-calculated correction values.
2Reliability
If delay offset correction is performed using correlation values, then the IRC performance is improved, but the processing complexity increases
Solution Approach 1:
The patent introduces correlation values as an intermediary element that mediates between the raw received signals and the final combined signal. These correlation values serve as a bridge to determine delay offset values, which then adjust the combined signal. This intermediary approach improves IRC performance while keeping the processing complexity manageable by breaking down the correction process into discrete, computable steps.
3Measurement precision
If noise and interference estimation is performed accurately, then the signal quality is improved, but the calculation complexity increases
Solution Approach 1:
The patent changes the parameters used for estimation by focusing on correlation values between signals from different antennas. Instead of performing complex noise and interference estimation directly on the combined signal, the method calculates correlation values as intermediate parameters, which then guide the delay offset determination. This parameter transformation maintains estimation accuracy while reducing calculation complexity.
Data Source
AI summary
The present invention relates to a method and a device for adjusting a signal of a receiving device in a mobile communication system and, more specifically, to a method for adjusting a signal of a receiving device in a mobile communication system, the method comprising the steps of: receiving signals from at least two antennas; calculating at least one correlation value by using the received signals; obtaining a delay difference value between the signals based on the at least one calculated correlation value; and outputting adjusted signals generated by adjusting the received signals based on the obtained delay difference value.