Universitat Politècnica de Catalunya
Universitat Politècnica de Catalunya. Departament d'Enginyeria Telemàtica
Universitat Politècnica de Catalunya. WNG - Grup de xarxes sense fils
2012
Wireless Sensor Networks, and especially IEEE 802.15.4, are originally defined for low cost applications, with low bit rates and power restrictions in mind. However, the ubiquity of the nodes and their easy connectivity also enable them to be used in supporting real time services, for instance, emergency scenarios, where TETRA is usually the employed audio technology. Focusing on voice transmission, we present a performance evaluation of audio streaming over a multi-hop Low-Rate Wireless Personal Area Network in order to provide bidirectional audio communication using a commercial IEEE 802.15.4 compliant platform. This paper includes an assessment of different software protocols and compression algorithms to support audio transmission on a CC2530 System-on-Chip WSN mote. The results establish the maximum number of hops of a bidirectional single-route network under real- time voice quality constraints.
Peer Reviewed
Postprint (published version)
Conference lecture
Anglès
Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Telemàtica i xarxes d'ordinadors; Wireless communication systems; IEEE 802.15.4; Audio streaming; Multi-hop; Voice compression; Effective capacity; Comunicació sense fil, Sistemes de
Elsevier
http://www.sciencedirect.com/science/article/pii/S1877705811059261
Open Access
E-prints [73012]
