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High data rate transmission using minimum energy coding wth ultra wide band modulation

A high data rate, ultra-wideband technology, applied in the field of data transmission, can solve the problems of limited output power of the transmitter, inter-symbol interference, etc.

Pending Publication Date: 2021-09-14
NXP BV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, one disadvantage of UWB is the limited permitted transmitter output power, which allows a range of only a few meters
Another problem with UWB is intersymbol interference due to multipath propagation

Method used

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  • High data rate transmission using minimum energy coding wth ultra wide band modulation
  • High data rate transmission using minimum energy coding wth ultra wide band modulation
  • High data rate transmission using minimum energy coding wth ultra wide band modulation

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Embodiment Construction

[0036] Various embodiments described herein enable improved UWB communications with a combination of source word encoding and OOK modulation. By encoding the source word as a codeword with very few logic high bits (in one example embodiment, one logic high bit), the codeword duty cycle is reduced below an adjustment threshold permitting the use of higher peak transmit power. In particular, UWB regulations define low duty cycle (LDC) mitigation techniques that define a duty cycle threshold below which higher maximum peak power is permitted. In one example embodiment, operating at a codeword duty cycle of less than 0.5% permits an increase in peak transmit power of approximately 10 dB to 20 dB. By enabling higher peak power operation, the need for forward or backward error correction is also eliminated in various embodiments, further saving system operating power. Furthermore, operating with very few logic high bits per codeword (eg, one logic high bit per codeword in one examp...

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Abstract

A method for high data rate transmission using minimum energy coding with Ultra Wide Band modulation includes encoding each of a plurality of sourcewords into a respective codeword. Each respective codeword includes a single logic-high bit. A codeword duty cycle is less than a low duty cycle threshold, wherein the codeword duty cycle is based on a bit length of the codeword. Each respective codeword is modulated with an On-Off-Keying (OOK) modulation to form a respective modulated codeword, wherein a transmission of each modulated codeword occurs only for the single logic-high bit in each respective codeword.

Description

technical field [0001] The present disclosure relates generally to data transmission, and more particularly to improving the transmission and reception of ultra-wideband (UWB) modulated data with a combination of source word encoding and additional modulation protocols. Background technique [0002] UWB is a data transmission standard that can be used without a license. UWB offers a very wide bandwidth, enabling data rates of several GBit / s with extremely high immunity to noise. However, one disadvantage of UWB is the limited permitted transmitter output power, which allows a range of only a few meters. Another problem with UWB is intersymbol interference due to multipath propagation. [0003] Many applications would benefit from improved transmission range, transmission data rate, low transmission energy and / or low intersymbol interference. For example, Internet of Things (IoT) devices often require greater range than just a few meters, while operating with limited energ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L27/04
CPCH04L27/04H04L25/4902H04B1/7176H04L25/03343H04B1/7183H04B2201/71636H04B1/69H04B7/0473H04B2001/6912
Inventor 简-彼得·斯考特
Owner NXP BV