Effect of Impulse Radio-Ultra Wideband Based on Energy Collection on MAC Protocol Performance

摘要

In this paper we analyze the effects of theprobabilities of detection, of false alarm, and of framesurvival (in the presence of simultaneous transmissions) onMAC protocols using impulse radio-ultra wideband (IRUWB)energy collection non-coherent receivers. The MACprotocols considered are all IEEE 802.15.4 compatible,namely the IEEE 802.15.4a optional UWB CCA mode,the IEEE 802.15.4a ALOHA mode, and a protocol termedpreamble sense multiple access (PSMA). The impact onthe network throughput, energy consumption, and delayare derived analytically and verified by simulation. Theresults show that these effects have a considerable impacton the performance of IR-UWB MAC protocols and aclassical analysis does not properly evaluate the protocolsperformances. The results compare the performances ofthe MAC protocols as well as highlight a number ofissues regarding adapting narrowband protocols to UWBsystems. The probability of frame survival on simultaneoustransmissions is shown to have a significant impact ona MAC protocol performance. The comparison showssuperior performance of the PSMA protocol under