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Because of relative motion between transmitter and receiver, the wideband underwater acoustic multipath channel can be more accurately described by a multi-scale multi-lag (MSML) model. The signal components received from different paths can be differentiated in terms of Doppler scales, time delays, and amplitudes. Estimation of these parameters is essential for many underwater applications. In this...
Analytic model is proposed to evaluate the packet delay, the delay jitter and the packet loss probability of IEEE 802.11 Distributed Coordination Function (DCF) in multi-hop Ad Hoc Networks. This model can also be easily extended to analyze the Enhanced Distributed Channel Access (EDCA). By modeling each node as a discrete time G/G/1 queue, the closed form expressions of the delay, the delay jitter...
In this paper, we present an analytic model for evaluating the delay, delay jitter and the packet loss probability in multi-hop ad hoc networks using the IEEE 802.11 distributed coordination function (DCF) as MAC protocol. By modeling each node as a discrete time G/G/1 queue, we derive the closed form expressions of the end-to-end delay, delay jitter and the packet loss probability for different circumstances...
Delay diversity modulation was shown to be a feasible scheme in space-time modulation. In this paper blind frequency-selective channel estimation of delay diversity modulation is considered. We show that if the delay is not less than the channel order, then the multiple-input-multiple-output (MIMO) channel can be converted into a special single-input-multiple-output (SIMO) channel. Subspace decomposition...
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