Timing Pilot Synchronization for Spectrally Efficient Signal Reception
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Solution Overview
Problem
Existing communications methods and systems are overly power hungry and spectrally inefficient, failing to effectively address issues of power consumption and spectral efficiency in electronic communications.
Innovation Solution
The system employs a low-complexity, highly-spectrally-efficient communication method that includes a mapper, pulse shaping filter, timing pilot insertion, transmitter and receiver front-ends, filter circuits, equalization, and sequence estimation to optimize signal processing, utilizing partial response pulse shaping and timing pilot synchronization for improved performance in the presence of non-linearity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If conventional communications methods are used, then system complexity is manageable, but spectral efficiency is poor and power consumption is high
Solution Approach 1:
The system dynamically adjusts filter parameters and equalization settings based on channel conditions to optimize spectral efficiency while managing complexity through adaptive rather than static configurations
Solution Approach 2:
The patent changes key parameters including pulse shaping filter characteristics, equalization coefficients, and timing synchronization parameters to achieve high spectral efficiency while maintaining manageable system complexity through optimized parameter selection
2Use of energy by moving object
If conventional communications methods are used, then implementation is straightforward, but power consumption is excessive
Solution Approach 1:
The system performs preliminary timing synchronization and frequency offset correction before main data processing to reduce overall power consumption by preparing signals in advance and avoiding repeated processing
Solution Approach 2:
The patent extracts and processes only the essential signal components needed for communication, removing unnecessary processing steps to reduce power consumption while maintaining implementation feasibility
3Quantity of substance
If highly-spectrally-efficient modulation is used, then spectral efficiency improves, but performance degrades in non-linear environments
Solution Approach 1:
The patent converts the harmful effect of non-linearity into a benefit by using decision feedback equalization that specifically compensates for non-linear distortion, thereby maintaining high spectral efficiency while improving reliability in non-linear environments
Solution Approach 2:
The system employs decision feedback equalization where previous symbol decisions are fed back to compensate for inter-symbol interference and non-linear distortion, improving performance in non-linear environments while maintaining spectral efficiency
4Measurement precision
If complex equalization and sequence estimation are used, then bit-error rate improves, but computational complexity increases
Solution Approach 1:
The equalization and sequence estimation processes are segmented into separate functional blocks that can be processed independently, reducing computational complexity while maintaining bit-error rate performance through systematic processing stages
Data Source
AI summary
Methods and systems are provided for timing synchronization for reception of highly-spectrally efficient communications. An example method may include, filtering, in a receiver, a received inter-symbol correlated (ISC) signal to generate a filtered ISC signal. The method may further include locking to a timing pilot signal of the filtered ISC signal. The timing pilot signal may include a sub-harmonic frequency of a clock signal associated with the received ISC signal. A timing pilot estimate signal of the timing pilot signal may be generated. The timing pilot estimate signal may be cancelled from the filtered partial response signal to generate an output ISC signal. The timing pilot signal includes a signal at ±(1/n*Fbaud), where n is an integer greater than 2, and Fbaud is a symbol rate of the clock signal. The clock signal may be recovered from the filtered ISC signal.