Wireless Power Receiver Training Sequence for Faster In-Band Data
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current wireless power transfer methods have low data transfer rates, which hinder authentication capabilities due to the need for transferring large quantities of authentication data, and reducing cycle numbers leads to parasitic resonant behaviors that complicate bit decoding.
Innovation Solution
A power receiver that recognizes a change in frequency to identify a training sequence, determines the impulse response, and cancels its effect during in-band communication, allowing for higher bit rates and minimizing additional circuitry and design costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the number of carrier cycles per data bit is reduced to increase data transfer rate, then the data transfer rate improves, but parasitic resonant behaviors prevail that complicate bit decoding
Solution Approach 1:
The patent applies preliminary action by sending a training sequence before the actual data transmission. This training sequence allows the receiver to pre-determine the impulse response characteristics of the communication channel, so that when data is transmitted at higher rates with fewer cycles per bit, the receiver already has the necessary compensation information to decode the bits accurately despite parasitic resonant behaviors.
Solution Approach 2:
The patent changes the parameter of carrier cycles per data bit from the conventional 512 cycles to a lower number (fewer than 512 cycles), thereby increasing the data transfer rate. This parameter change is made possible by combining it with the training sequence approach that compensates for the resulting bit decoding difficulties caused by parasitic resonances.
2Productivity
If the data transfer rate is increased to accommodate authentication data, then authentication efficiency improves, but echo fluctuations between Tx and Rx worsen
Solution Approach 1:
The training sequence is sent beforehand to establish the impulse response characteristics of the channel, including any echo fluctuations. This preliminary characterization enables the receiver to compensate for echo effects during subsequent authentication data transmission, allowing higher data rates without sacrificing reliability.
Solution Approach 2:
The system uses the training sequence response as feedback to determine the impulse response, which is then used to compensate for channel effects including echo fluctuations during authentication data transmission, maintaining reliability at higher data rates.
3Adaptability or versatility
If conventional wireless power transfer methods are used, then system compatibility is maintained, but data transfer rate remains low
Solution Approach 1:
The patent changes the parameter of carrier cycles per data bit from 512 to a lower value, thereby increasing data transfer rate while maintaining compatibility with existing wireless power transfer systems. The training sequence mechanism ensures that this parameter change does not compromise system interoperability.
Data Source
AI summary
A power receiver is provided herein. The power receiver provides in-band communication with a power transmitter. The power receiver recognizes a change in frequency that identifies a training sequence and determines an impulse response with respect to the training sequence. The power receiver also cancels an effect of the impulse response during the in-band communication.