Wireless Communications
Cross-Layer Optimization for Data Rate Utility Problem in UWB-Based Ad Hoc Networks
IEEE Transactions on Mobile Computing
Minimizing energy consumption in IR-UWB based wireless sensor networks
ICC'09 Proceedings of the 2009 IEEE international conference on Communications
Design challenges for energy-constrained ad hoc wireless networks
IEEE Wireless Communications
Energy-constrained modulation optimization
IEEE Transactions on Wireless Communications
Low Complexity Rake Receivers in Ultra-Wideband Channels
IEEE Transactions on Wireless Communications
IEEE Communications Magazine
UWB wireless sensor networks: UWEN - a practical example
IEEE Communications Magazine
The ultra-wide bandwidth indoor channel: from statistical model to simulations
IEEE Journal on Selected Areas in Communications
Channel estimation for ultra-wideband communications
IEEE Journal on Selected Areas in Communications
Performance of ultra-wideband communications with suboptimal receivers in multipath channels
IEEE Journal on Selected Areas in Communications
Power efficient multimedia communication over wireless channels
IEEE Journal on Selected Areas in Communications
Energy-efficiency of MIMO and cooperative MIMO techniques in sensor networks
IEEE Journal on Selected Areas in Communications
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Impulse Radio Ultra WideBand (IR-UWB) communication has proven to be an important technique for supporting high-rate, short-range, and low-power communication. In this paper, using detailed models of typical IR-UWB transmitter and receiver structures, we model the energy consumption per information bit in a single link of an IR-UWB system, considering packet overhead, retransmissions, and a Nakagami-m fading channel. Using this model, we minimize the energy consumption per information bit by finding the optimum packet length and the optimum number of RAKE fingers at the receiver for different transmission distances, using Differential Phase-shift keying (DBPSK), Differential Pulse-position Modulation (DPPM) and On-off Keying (OOK), with coherent and non-coherent detection. Symbol repetition schemes with hard decision (HD) combining and soft decision (SD) combining are also compared in this paper. Our results show that at very short distances, it is optimum to use large packets, OOK with non-coherent detection, and HD combining, while at longer distances, it is optimum to use small packets, DBPSK with coherent detection, and SD combining. The optimum number of RAKE fingers are also found for given transmission schemes.