Evaluation of OFDM Channel Sounding Techniques with Three Modulation Sequences
Autor(a) principal: | |
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Data de Publicação: | 2019 |
Outros Autores: | , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Journal of Microwaves. Optoelectronics and Electromagnetic Applications |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S2179-10742019000400505 |
Resumo: | Abstract This paper presents an evaluation of multicarrier channel sounding techniques using different random and pseudo-random sequences to modulate the OFDM sounding signal. The Random (Rand), Pseudo-Noise (PN) and Zadoff-Chu (ZC) were tested, both in laboratory simulations and in field measurements. For the laboratory simulations Matlab routines were used to generate OFDM signals modulated with each of the three sounding signals, that were then convoluted with a synthesized transfer function of a test channel with six multipath components and added Gaussian noise and Doppler fading. The resulting signals are then correlated with a copy of the original signal to provide the multipath power delay profiles. The root mean square deviation (RMSD) and the relationship between peak power and mean power (PAPR) were used as metrics for the comparison between the test transfer function and the simulation detected multipath delay profiles, showing slight advantages of the ZC sequence. The three sequences were then used in field measurements to characterize an urban channel at 700 MHz. In the field measurements, the ZC sequence showed the lowest detection threshold, allowing for the detection of a larger number of multipath components. |
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Journal of Microwaves. Optoelectronics and Electromagnetic Applications |
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Evaluation of OFDM Channel Sounding Techniques with Three Modulation SequencesBroadband channel soundingchannel characterizationradio propagationAbstract This paper presents an evaluation of multicarrier channel sounding techniques using different random and pseudo-random sequences to modulate the OFDM sounding signal. The Random (Rand), Pseudo-Noise (PN) and Zadoff-Chu (ZC) were tested, both in laboratory simulations and in field measurements. For the laboratory simulations Matlab routines were used to generate OFDM signals modulated with each of the three sounding signals, that were then convoluted with a synthesized transfer function of a test channel with six multipath components and added Gaussian noise and Doppler fading. The resulting signals are then correlated with a copy of the original signal to provide the multipath power delay profiles. The root mean square deviation (RMSD) and the relationship between peak power and mean power (PAPR) were used as metrics for the comparison between the test transfer function and the simulation detected multipath delay profiles, showing slight advantages of the ZC sequence. The three sequences were then used in field measurements to characterize an urban channel at 700 MHz. In the field measurements, the ZC sequence showed the lowest detection threshold, allowing for the detection of a larger number of multipath components.Sociedade Brasileira de Microondas e Optoeletrônica e Sociedade Brasileira de Eletromagnetismo2019-12-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S2179-10742019000400505Journal of Microwaves, Optoelectronics and Electromagnetic Applications v.18 n.4 2019reponame:Journal of Microwaves. Optoelectronics and Electromagnetic Applicationsinstname:Sociedade Brasileira de Microondas e Optoeletrônica (SBMO)instacron:SBMO10.1590/2179-10742019v18i41704info:eu-repo/semantics/openAccessSilva,Marcelo MolinaMello,Luiz da SilvaRon,Carlos V. RodríguezAlmeida,M. P. C.Tacuri,Alexander B. HilarioCastellanos,Pedro GonzalezGonsioroski,L. H.eng2019-11-07T00:00:00Zoai:scielo:S2179-10742019000400505Revistahttp://www.jmoe.org/index.php/jmoe/indexONGhttps://old.scielo.br/oai/scielo-oai.php||editor_jmoe@sbmo.org.br2179-10742179-1074opendoar:2019-11-07T00:00Journal of Microwaves. Optoelectronics and Electromagnetic Applications - Sociedade Brasileira de Microondas e Optoeletrônica (SBMO)false |
dc.title.none.fl_str_mv |
Evaluation of OFDM Channel Sounding Techniques with Three Modulation Sequences |
title |
Evaluation of OFDM Channel Sounding Techniques with Three Modulation Sequences |
spellingShingle |
Evaluation of OFDM Channel Sounding Techniques with Three Modulation Sequences Silva,Marcelo Molina Broadband channel sounding channel characterization radio propagation |
title_short |
Evaluation of OFDM Channel Sounding Techniques with Three Modulation Sequences |
title_full |
Evaluation of OFDM Channel Sounding Techniques with Three Modulation Sequences |
title_fullStr |
Evaluation of OFDM Channel Sounding Techniques with Three Modulation Sequences |
title_full_unstemmed |
Evaluation of OFDM Channel Sounding Techniques with Three Modulation Sequences |
title_sort |
Evaluation of OFDM Channel Sounding Techniques with Three Modulation Sequences |
author |
Silva,Marcelo Molina |
author_facet |
Silva,Marcelo Molina Mello,Luiz da Silva Ron,Carlos V. Rodríguez Almeida,M. P. C. Tacuri,Alexander B. Hilario Castellanos,Pedro Gonzalez Gonsioroski,L. H. |
author_role |
author |
author2 |
Mello,Luiz da Silva Ron,Carlos V. Rodríguez Almeida,M. P. C. Tacuri,Alexander B. Hilario Castellanos,Pedro Gonzalez Gonsioroski,L. H. |
author2_role |
author author author author author author |
dc.contributor.author.fl_str_mv |
Silva,Marcelo Molina Mello,Luiz da Silva Ron,Carlos V. Rodríguez Almeida,M. P. C. Tacuri,Alexander B. Hilario Castellanos,Pedro Gonzalez Gonsioroski,L. H. |
dc.subject.por.fl_str_mv |
Broadband channel sounding channel characterization radio propagation |
topic |
Broadband channel sounding channel characterization radio propagation |
description |
Abstract This paper presents an evaluation of multicarrier channel sounding techniques using different random and pseudo-random sequences to modulate the OFDM sounding signal. The Random (Rand), Pseudo-Noise (PN) and Zadoff-Chu (ZC) were tested, both in laboratory simulations and in field measurements. For the laboratory simulations Matlab routines were used to generate OFDM signals modulated with each of the three sounding signals, that were then convoluted with a synthesized transfer function of a test channel with six multipath components and added Gaussian noise and Doppler fading. The resulting signals are then correlated with a copy of the original signal to provide the multipath power delay profiles. The root mean square deviation (RMSD) and the relationship between peak power and mean power (PAPR) were used as metrics for the comparison between the test transfer function and the simulation detected multipath delay profiles, showing slight advantages of the ZC sequence. The three sequences were then used in field measurements to characterize an urban channel at 700 MHz. In the field measurements, the ZC sequence showed the lowest detection threshold, allowing for the detection of a larger number of multipath components. |
publishDate |
2019 |
dc.date.none.fl_str_mv |
2019-12-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S2179-10742019000400505 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S2179-10742019000400505 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/2179-10742019v18i41704 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Sociedade Brasileira de Microondas e Optoeletrônica e Sociedade Brasileira de Eletromagnetismo |
publisher.none.fl_str_mv |
Sociedade Brasileira de Microondas e Optoeletrônica e Sociedade Brasileira de Eletromagnetismo |
dc.source.none.fl_str_mv |
Journal of Microwaves, Optoelectronics and Electromagnetic Applications v.18 n.4 2019 reponame:Journal of Microwaves. Optoelectronics and Electromagnetic Applications instname:Sociedade Brasileira de Microondas e Optoeletrônica (SBMO) instacron:SBMO |
instname_str |
Sociedade Brasileira de Microondas e Optoeletrônica (SBMO) |
instacron_str |
SBMO |
institution |
SBMO |
reponame_str |
Journal of Microwaves. Optoelectronics and Electromagnetic Applications |
collection |
Journal of Microwaves. Optoelectronics and Electromagnetic Applications |
repository.name.fl_str_mv |
Journal of Microwaves. Optoelectronics and Electromagnetic Applications - Sociedade Brasileira de Microondas e Optoeletrônica (SBMO) |
repository.mail.fl_str_mv |
||editor_jmoe@sbmo.org.br |
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1752122126659223552 |