FBMC Receiver Window Adjustment for Variable Tail Reception
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Solution Overview
Problem
Conventional methods for receiving FBMC signals fail to accurately determine the start and end positions of the receiving window, leading to incomplete reception of signal main portions, pre-tails, and post-tails, resulting in data loss and decoding errors due to variable tail lengths.
Innovation Solution
A data receiving method that involves obtaining the start and end times of the signal main portion through timing synchronization, determining the lengths of the pre-tail and post-tail, and adjusting the receiving window accordingly to ensure complete reception of the signal main portion, pre-tail, and post-tail.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional symbol synchronization method is used to determine receiving window position, then the main portion of the signal can be determined, but the pre-tail and post-tail cannot be completely covered due to variable tail lengths
Solution Approach 1:
The patent applies preliminary action by determining the lengths of pre-tail and post-tail before establishing the receiving window boundaries. The receiver first obtains tail length information (either from transmitter signaling or local calculation based on filter parameters), then uses this information to accurately position the receiving window to cover the complete signal including variable-length tails, thereby preventing data loss at the boundaries.
2Productivity
If fixed receiving window boundaries are used, then the main portion can be received, but incomplete reception occurs when tail lengths vary
Solution Approach 1:
The patent applies dynamics by making the receiving window boundaries adaptive rather than fixed. The receiver dynamically adjusts the start and end positions of the receiving window based on the determined tail lengths. This dynamic adjustment ensures that the receiving window always covers the complete signal regardless of variable tail lengths, thereby maintaining both receiving efficiency and accuracy.
3Measurement precision
If timing synchronization alone is used, then the signal main portion start and end times can be obtained, but the variable tail lengths cannot be accounted for
Solution Approach 1:
The patent applies universality by creating a receiving window determination mechanism that handles both fixed and variable tail lengths through a unified approach. The system obtains tail length information through multiple possible methods (transmitter signaling or local calculation from filter parameters), then uses this information to universally determine the receiving window boundaries, making the system adaptable to different FBMC configurations and variable tail scenarios.
Data Source
AI summary
A data receiving method and receiver are provided. A receiver determines the length of a pre-tail and the length of a post-tail of a frame by obtaining a start time and an end time of the main part of the signal of the frame at a fixed time, and determines a start time and an end time of a frame receiving window according to the start time and the end time of the main part of the signal of the frame and according to the length of the pre-tail and the length of the post-tail; and receiving a frame between the start time and the end time of the frame receiving window, so that the receiver can accurately and completely receive the main part of the signal and the pre-tail and post-tail of each frame to accurately and completely receive signals.