Figure 8 Simulation of multiple-access model.
Figure 9 Simulation of multipath and multiple-access model.
In this section, the ad hoc frequency-hopping multiple-user system is presented, and the virtual user equivalent is proposed to simplify the multiple access interference model.
For the analysis in this paper, we adopt an OFDMA-based (Orthogonal Frequency-Division Multiple Access (OFDMA)) model for the spectral efficiency that is widely used in the literature [11, 21, 22].
In this paper, we identify the requirements for such techniques, and propose a novel industrial architecture where multiple access control models are assessed when cloud technologies are integrated.
Figure 1 The multiple access relay channel model.
This paper presents a spread-spectrum multiple access communications system model built and tested in LabVIEW for software-defined radio Universal Software Radio Peripheral USRPP) transceiver chain.
This notation is illustrated in Figure 5. Figure 5 The multiple access relay channel model with the 8 introduced classes of bit nodes.
In the FAA scheme, an interference-free time division multiple access (TDMA) based model is assumed, where only one user transmits at a time and the BS acquires the CSI from each user and determines how long each user receives service within a time frame (the shortest duration of time interval in which users' CSI remain constant).
In this paper, however, to model the wideband code division multiple access (WCDMA) interface, a model of a multi-service Erlang's ideal grading is used [13, 14].
This paper proposes a cooperative design of a parity-check network coding scheme in the context of a two-source multiple access relay channel (MARC) model, a common compact model in hierarchical wireless sensor networks (WSNs).
