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Packet-level generative models are designed to be employed for evaluating and designing high layer wireless communications protocols. The significance of these models arises from their ability to replace the entire physical communication layer, hence reducing the time and complexity of wireless system simulations. In this paper, an enhanced general packet radio service (EGPRS) transmission system...
Generative models hold the promise of reducing the computational load and cost caused by directly simulating a real system. They are vital to the design and performance evaluation of error control schemes and high layer wireless communication protocols. Therefore, designing an efficient and accurate generative model is highly desirable. Moreover, the errors encountered in digital wireless channels...
An analytically solvable mathematical model is presented for an IEEE 802.11 network, where two terminals, both visible to an access point but not to each other, contend for the channel. This situation, known as the hidden node topology, has been identified as a key reason for the degradation of the protocol's performance. It is shown that the renewal theory, the analytical tool used traditionally,...
For the analysis and design of Multiple-Input Multiple-Output (MIMO) wireless communication systems with frequency diversity features, e.g., MIMO-Orthogonal Frequency Division Multiplexing (MIMO-OFDM) systems, it is often desirable to develop a channel model that can characterise the three- dimensional (3-D) space-time-frequency (STF) correlation properties over the links of the underlying MIMO channels...
This paper describes the indoor measurements of a dual multiple-input multiple-output (MIMO) system, conducted at the 2.5 GHz band. We are mainly interested in the double-directional channel response of each frequency band and especially in the degree of similarity between them. In principle, when a frequency division duplex (FDD) system is deployed (like in UMTS) it is really challenging to study...
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