RF Signal Reception via Multi-Channel Pilot Compensation
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Solution Overview
Problem
Existing signal transmitting/receiving methods struggle to cope with increased data sizes and the number of broadcasting channels, requiring a technique with higher channel bandwidth efficiency and lower network configuration costs.
Innovation Solution
The method involves outputting service data units across frequency bands, mapping them to symbols, inserting first and second pilot signals into frames to create a time difference between RF channels, and using these pilot signals for channel compensation and decoding during reception.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If existing signal transmitting/receiving methods are used, then current data transmission capabilities are maintained, but channel bandwidth efficiency is insufficient and network configuration costs are high
Solution Approach 1:
The service data units are divided and distributed across multiple RF channels according to frequency bands. Each channel carries a portion of the total data, allowing parallel transmission and improving overall bandwidth efficiency. The segmentation enables flexible resource allocation without requiring complete reconfiguration of the network infrastructure.
Solution Approach 2:
The patent transitions from single-channel sequential transmission to multi-channel parallel transmission by utilizing the frequency dimension. Service data is mapped to different frequency bands and transmitted simultaneously across multiple RF channels, effectively adding a dimensional aspect to the transmission system that improves bandwidth efficiency without proportionally increasing network complexity.
2Measurement precision
If pilot signals are inserted to enable channel compensation, then signal detection and restoration accuracy is improved, but frame structure complexity increases
Solution Approach 1:
Pilot signals are inserted at predetermined positions within the frame structure before actual data transmission. These pilot signals serve as reference markers that enable the receiver to perform channel estimation and compensation in advance, improving signal detection accuracy. The preliminary placement of pilot signals allows the system to adapt to channel conditions without requiring complex real-time processing.
Solution Approach 2:
The pilot signals act as intermediary elements between the transmitted service data and the received signal. By inserting these known reference signals into the frame structure, the receiver can use them as mediators to estimate channel characteristics and compensate for distortions, thereby improving detection accuracy without directly increasing the complexity of the data transmission mechanism.
3Productivity
If service data units are distributed across multiple RF channels with time differences, then channel bandwidth efficiency is improved, but signal synchronization difficulty increases
Solution Approach 1:
The patent employs periodic insertion of pilot signals at regular intervals within each frame and across multiple channels. This periodic structure creates a predictable pattern that facilitates synchronization at the receiver. The regular timing of pilot signals allows the system to maintain synchronization across multiple RF channels while distributing service data units to improve bandwidth efficiency.
Data Source
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AI summary
A method of transmitting/receiving a signal and an apparatus for transmitting/receiving a signal are disclosed. The method of receiving a signal includes receiving signal frames temporally shifted via a plurality of radio frequency (RF) channels, demodulating one of the signal frames using first pilot signals and second pilot signals included in the signal frames and compensating for the channel of the demodulated signal frame and decoding service contents from the signal frame of which the channel is compensated for.