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Author: Anna Llagostera
Author: Anna Llagostera
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Stories by Anna Llagostera

Anna Llagostera is a Senior Applied Research Engineer with more than 10 years experience in data analysis and developing algorithms to evaluate the quality of speech, video and data services in telecommunication networks for Rohde & Schwarz SwissQual.
She graduated as a Telecommunication Engineer, received a Ph.D. in Signal Processing from EPFL (Switzerland) and was awarded a Prospective Research Fellowship from the Swiss National Science Foundation.
Anna is actively participating in ITU-T standardization activities, especially contributing in the maintenance and improvement of ITU-T Rec. P.863 (POLQA) for speech quality prediction, but also on newer models for the assessment of dimension degradations and on the development of data transport capacity measurements.

Field measurements in mobile networks for regulators

Field measurements in mobile networks for regulators

April 15, 2024 | by Anna Llagostera

Field measurements are very valuable to regulators or national regulatory authorities (NRAs), since they provide data required to comply with regulations, investigate customer complaints, enhance service quality for consumers, promote healthy competition among operators and facilitate network expansion for the telecommunications sector.

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Testing the speech quality dimensions – the new POLQA extension ITU-T P.863.2

Testing the speech quality dimensions – the new POLQA extension ITU-T P.863.2

October 26, 2023 | by Anna Llagostera

Telephony remains a core function of telecommunications networks and speech quality is a key indicator of telephony service performance. The current ITU-T standard for speech quality assessment P.863 'POLQA' has recently been enhanced to predict multiple perceptual quality dimensions.

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EVS AMR-WB IO speech quality improvements in telephone services

EVS AMR-WB IO speech quality improvements in telephone services

March 24, 2023 | by Anna Llagostera

This post looks at recent results from an internal study of speech quality improvements when the EVS AMR-WB IO mode is used in conjunction with the legacy AMR-WB encoder.

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Further authors

Adrian Maurer
Adrian Maurer
Albert Huang
Albert Huang
Andreas Richard
Andreas Richard
Andreas Roessler
Andreas Roessler
Andreas Spachtholz
Andreas Spachtholz
Anna Llangostera
Anna Llagostera
Arnd Sibila
Arnd Sibila
Corbett Rowell
Corbett Rowell
Gregor Tomic
Gregor Tomic
Jens Berger
Jens Berger
Jeremy Carpenter
Jeremy Carpenter
Johanna Sochos
Johanna Sochos
Magnus Hylén
Magnus Hylén
Manuel Mielke
Manuel Mielke
Marco Neri
Marco Neri
Meik Kottkamp
Meik Kottkamp
Michael Lorenz
Michael Lorenz
Miguel Román
Miguel Román
MNT Team
MNT Team
Nils Posegga
Nils Posegga
Oliver Jonas
Oliver Jonas
Pak Lun Lam
Pak Lun Lam
Peter Busch
Peter Busch
Simon Allemann
Simon Allemann
Yunuen Wagner
Yunuen Wagner

Stories by category

Benchmarking & optimization
Benchmarking & optimization

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Field services & interference hunting
Field services & interference hunting

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Innovations in mobile network testing
Innovations in mobile network testing

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Testing from RF to QoE
Testing from RF to QoE

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