Document Type

Conference Paper


Available under a Creative Commons Attribution Non-Commercial Share Alike 4.0 International Licence


Electrical and electronic engineering, Communication engineering and systems, telecommunications

Publication Details

Ruairí de Fréin, "Tiled Time Delay Estimation in Mobile Cloud Computing Environments", 2017 IEEE International Symposium on Signal Processing and Information Technology (ISSPIT), December 2017.


We present a tiled delay estimation technique in the context of Mobile Cloud Computing (MCC) environments. We examine its accuracy in the presence of multiple sources for (1) sub-sample delays and also (2) in the presence of phase-wrap around. Phase wrap-around is prevalent in MCC because the separation of acoustic sources may be large. We show that tiling a histogram of instantaneous phase estimates can improve delay estimates when phase-wrap around is sig- nificantly present and also when multiple sources are present. We report that error in the delay estimator is generally less than 5% of a sample, when the true delay is up to 10 samples for three source mixtures.



Science Foundation Ireland