NLOS identification and ranging methods in indoor IR-UWB systems
Impulse radio ultra-wideband (IR-UWB) is a promising communication technology. With the advantages of high accuracy, great anti-interference performance, high data rates, and low power consumption, it is drawing more and more attention and is becoming a hot research area for future communication...
Saved in:
Main Author: | |
---|---|
Other Authors: | |
Format: | Theses and Dissertations |
Language: | English |
Published: |
2016
|
Subjects: | |
Online Access: | http://hdl.handle.net/10356/68765 |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
Institution: | Nanyang Technological University |
Language: | English |
id |
sg-ntu-dr.10356-68765 |
---|---|
record_format |
dspace |
spelling |
sg-ntu-dr.10356-687652023-07-04T15:04:09Z NLOS identification and ranging methods in indoor IR-UWB systems Sun, Jingyuan Law Choi Look School of Electrical and Electronic Engineering DRNTU::Engineering::Electrical and electronic engineering Impulse radio ultra-wideband (IR-UWB) is a promising communication technology. With the advantages of high accuracy, great anti-interference performance, high data rates, and low power consumption, it is drawing more and more attention and is becoming a hot research area for future communication and position estimation applications. In this dissertation, we mainly focus on the IR-UWB ranging techniques which appears to be the basis o f further UWB positioning. A detailed introduction of UWB signals and widely-adopted UWB channel models are provided. Moreover, as NLOS propagation poses a threat to the accuracy o f ranging estimates, we also address the NLOS identification problem. Parametric-based as well as non-parametric-based method for identification are compared by simulations. It is found that both of them work well, and non-parametric-based method can better simplify the receiver since it merely depends on the statistics o f the received signal without the need to extract the channel statistics. To correctly identify the channel condition will no doubt benefit the range estimation, which is also discussed in the dissertation. Two main ranging techniques, namely Received Signal Strength (RSS) and Time of Arrival(TOA) based algorithms are presented. For the latter, in order to reduce the influence o f noise and multipath effects and improve the ranging accuracy, we also propose an energy-detection-based based TOA which uses a threshold to search for the first direct path. Extensive simulations of RSS and TOA ranging methods are conducted, which implies that in most cases, TOA outperforms RSS as expected. Master of Science (Communications Engineering) 2016-06-01T02:06:40Z 2016-06-01T02:06:40Z 2016 Thesis http://hdl.handle.net/10356/68765 en 85 p. application/pdf |
institution |
Nanyang Technological University |
building |
NTU Library |
continent |
Asia |
country |
Singapore Singapore |
content_provider |
NTU Library |
collection |
DR-NTU |
language |
English |
topic |
DRNTU::Engineering::Electrical and electronic engineering |
spellingShingle |
DRNTU::Engineering::Electrical and electronic engineering Sun, Jingyuan NLOS identification and ranging methods in indoor IR-UWB systems |
description |
Impulse radio ultra-wideband (IR-UWB) is a promising communication
technology. With the advantages of high accuracy, great anti-interference
performance, high data rates, and low power consumption, it is drawing more and
more attention and is becoming a hot research area for future communication and
position estimation applications.
In this dissertation, we mainly focus on the IR-UWB ranging techniques which
appears to be the basis o f further UWB positioning. A detailed introduction of UWB
signals and widely-adopted UWB channel models are provided. Moreover, as
NLOS propagation poses a threat to the accuracy o f ranging estimates, we also
address the NLOS identification problem. Parametric-based as well as
non-parametric-based method for identification are compared by simulations. It is
found that both of them work well, and non-parametric-based method can better
simplify the receiver since it merely depends on the statistics o f the received signal
without the need to extract the channel statistics. To correctly identify the channel
condition will no doubt benefit the range estimation, which is also discussed in the
dissertation. Two main ranging techniques, namely Received Signal Strength (RSS)
and Time of Arrival(TOA) based algorithms are presented. For the latter, in order to
reduce the influence o f noise and multipath effects and improve the ranging
accuracy, we also propose an energy-detection-based based TOA which uses a
threshold to search for the first direct path. Extensive simulations of RSS and TOA
ranging methods are conducted, which implies that in most cases, TOA outperforms
RSS as expected. |
author2 |
Law Choi Look |
author_facet |
Law Choi Look Sun, Jingyuan |
format |
Theses and Dissertations |
author |
Sun, Jingyuan |
author_sort |
Sun, Jingyuan |
title |
NLOS identification and ranging methods in indoor IR-UWB systems |
title_short |
NLOS identification and ranging methods in indoor IR-UWB systems |
title_full |
NLOS identification and ranging methods in indoor IR-UWB systems |
title_fullStr |
NLOS identification and ranging methods in indoor IR-UWB systems |
title_full_unstemmed |
NLOS identification and ranging methods in indoor IR-UWB systems |
title_sort |
nlos identification and ranging methods in indoor ir-uwb systems |
publishDate |
2016 |
url |
http://hdl.handle.net/10356/68765 |
_version_ |
1772827238761234432 |