نتایج جستجو برای: sub channel assignment
تعداد نتایج: 468847 فیلتر نتایج به سال:
This paper aims proposing a new method to solve channel assignment problem that has better performance than mentioned methods. Here, a new hybrid state channel assignment method is employed. This paper proposes a LinkLayard Protocol and Learning Automata (LLLA) to achieve a smart method for suitable assignment. Simulation results show that the proposed algorithm has better results than AODV in ...
This paper studies the routing and wavelength assignment problem for a circuit-switched time division multiplexed (TDM) wavelength-routed (WR) optical WDM network. In a conventional wavelength routed network, an entire wavelength is assigned to a given session (or circuit). This can lead to lower channel utilization when the individual sessions do not need the entire channel bandwidth. This pap...
Modern cellular mobile communications systems are characterized by a high degree of capacity. Consequently, they have to serve the maximum possible number of calls while the number of channels per cell is limited. The objective of channel allocation is to assign a required number of channels to each cell such that both efficient frequency spectrum utilization is provided and interference effect...
Wireless mesh networks (WMNs) have been considered as one of the key technologies for the configuration of wireless machines since they emerged. In a WMN, wireless routers provide multi-hop wireless connectivity between hosts in the network and also allow them to access the Internet via gateway devices. Wireless routers are typically equipped with multiple radios operating on different channels...
This paper presents an ant colony optimization (ACO) method as a method for channel assignment in a mobile ad hoc network (MANET), where achieving high spectral efficiency necessitates an efficient channel assignment. The suggested algorithm is intended for graph-coloring problems and it is specifically tweaked to the channel assignment problem in MANET with a clustered network topology. A mult...
This paper develops an adaptive scheme relying on a part-time availability of the channel state information and supplying the constant minimum rate achievable for an arbitrary fading realization. The two-mode transmission is investigated with the instantaneous perfect channel state information being known at the transmitter in the limited portion of time. We derived a general procedure for a su...
In recent years, multi-channel multi-radio wireless mesh networks are considered a reliable and cost effective way for internet access in wide area. A major research challenge in this network is, selecting a least interference channel from the available channels, efficiently assigning a radio to the selected channel, and routing packets through the least interference path. Many algorithms and m...
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