Quasi-Periodic Pulse Synchronization for Low-Power Communication
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Portable communication devices face power efficiency challenges due to continuous transmitter operation, leading to limited battery life, and existing pulse-based modulation techniques do not effectively manage power consumption during signal transmission and reception.
Innovation Solution
The method involves generating and transmitting quasi-periodic pulse sequences based on substantially periodic pulse sequences, with adjustable pulse rates to optimize power usage by suppressing or inserting pulses within intervals, ensuring efficient power management during transmission and reception.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the transmitter is operated continuously to ensure signal transmission capability, then the communication reliability is improved, but the power consumption increases and battery life decreases
Solution Approach 1:
The transmitter operates in periodic high-power mode to transmit quasi-periodic pulse sequences, followed by low-power mode during intervals between pulses. The receiver similarly alternates between high-power reception mode and low-power idle mode, synchronized with the transmitted pulse sequence timing.
Solution Approach 2:
The system dynamically adjusts the transmitter and receiver operating modes based on the pulse sequence timing. The transmitter switches between high-power transmission and low-power states, while the receiver dynamically transitions between active reception and idle states, optimizing power consumption while maintaining communication capability.
2Duration of action of moving object
If pulse-based modulation is used to reduce power consumption, then the battery life is extended, but the synchronization between transmitter and receiver becomes more complex
Solution Approach 1:
The transmitter transmits a quasi-periodic pulse sequence with a known pattern that the receiver can predict in advance. The receiver uses the known pulse sequence structure to anticipate when pulses will arrive, allowing it to synchronize its high-power reception windows with the expected pulse arrivals without requiring complex real-time synchronization protocols.
Solution Approach 2:
The system employs feedback mechanisms where the receiver detects the transmitted quasi-periodic pulse sequence and adjusts its timing and synchronization based on the detected pulse patterns. This feedback loop enables the receiver to maintain accurate synchronization with the transmitter while operating in periodic low-power mode.
3Power
If the transmitter operates in high-power mode during pulse transmission, then the signal transmission distance is improved, but the overall power efficiency decreases
Solution Approach 1:
The transmitter operates in periodic high-power mode only during the brief intervals when pulses are being transmitted, then switches to low-power mode during the intervals between pulses. This periodic operation allows the system to achieve sufficient transmission power when needed while minimizing overall energy consumption during the majority of the time when no transmission is occurring.
Data Source
AI summary
System and method are disclosed for synchronization of a transmitting device and a receiving device that communicate with each other via pulse modulation. The synchronization technique entails the transmitting device sending one or more quasi-periodic pulse sequences to the receiving device. A quasi-periodic pulse sequence is based on a substantially periodic pulse sequence, and may include some non-periodic pulses or not include some periodic pulses. The transmitting device may transmit frames each including a preamble that comprises one or more quasi-periodic pulse sequences, and a data payload that may comprise data. The receiving device receives the signal, generates samples of the signal, and detects the quasi-periodic pulse sequences in the received signal by analyzing samples based on a sample associated with a pulse and the period associated with the substantially periodic pulse sequence. The receiving device is further able to detect frames based on the detection of the sequence, and extract data therefrom.