Reception Device Multipath Delay Wave Removal
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Solution Overview
Problem
Existing reception device technologies require physical changes to the transmitting/receiving system to improve reception states in difficult positions, which is time-consuming and troublesome.
Innovation Solution
A reception device equipped with a sensor unit that detects internal and external states, a reception unit that adjusts operations based on sensor information, and includes a waveform estimation unit, filter, and delay wave removal unit to improve reception without physical system changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If base station configuration is physically changed to increase reception coverage, then reception state in difficult positions is improved, but system complexity and implementation time increase
Solution Approach 1:
The patent replaces physical mechanical changes (adding base stations) with signal processing operations (multipath removal, gain control, resampling) to improve reception quality. The reception device uses software-based algorithms to eliminate multipath interference and correct sampling frequency errors, achieving improved reception without physical infrastructure changes.
Solution Approach 2:
The patent changes signal processing parameters dynamically based on reception conditions. It adjusts gain control parameters, resampling frequency parameters, and multipath removal parameters according to detected reception state, enabling adaptive optimization without physical system changes.
2Reliability
If base station is increased to improve reception status, then reception coverage is improved, but implementation time and cost increase
Solution Approach 1:
The patent substitutes physical infrastructure deployment with software-based signal processing. Instead of time-consuming base station installation and configuration, the system immediately applies multipath removal, gain control, and resampling algorithms to improve reception, reducing implementation time from months to minutes.
3Reliability
If gain control response speed is increased for moving bodies, then reception stability is improved, but energy consumption increases
Solution Approach 1:
The patent implements dynamic gain control where the response speed is automatically adjusted based on detected motion state. For moving bodies, a faster response speed is applied to maintain reception stability during motion. For stationary devices, a slower response speed is used to reduce energy consumption. This dynamic adaptation optimizes both performance and energy efficiency.
Solution Approach 2:
The patent changes the gain control response speed parameter based on motion detection results. When motion is detected, the response speed parameter is increased to track signal variations. When stationary, the parameter is decreased to minimize energy usage, achieving context-dependent optimization.
Data Source
AI summary
The present technology relates to a reception device, a receiving method, and a program capable of improving a reception state.A delay wave by multipath is estimated on the basis of sensor information detected by a sensor unit, a replica of the delay wave is generated by a sum of products of a coefficient for each delay wave and a signal of a reception wave according to delay time on the basis of the estimated delay wave by the multipath, and the generated replica of the delay wave is subtracted from the signal of the reception wave, thereby removing the delay wave from the signal of the reception wave. The present technology may be applied to a receiver which receives a broadcast wave.