Virtual Cooperation for Throughput Maximization in Distributed Large-Scale Wireless NetworksReport as inadecuate




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EURASIP Journal on Advances in Signal Processing

, 2011:184685

Cooperative MIMO Multicell Networks

Abstract

A distributed wireless network with Open image in new window links is considered, where the links are partitioned into Open image in new window clusters each operating in a subchannel with bandwidth Open image in new window. The subchannels are assumed to be orthogonal to each other. A general shadow-fading model described by the probability of shadowing Open image in new window and the average cross-link gains Open image in new window is considered. The main goal is to find the maximum network throughput in the asymptotic regime of Open image in new window, which is achieved by: i proposing a distributed power allocation strategy, where the objective of each user is to maximize its best estimate based on its local information of the average network throughput and ii choosing the optimum value for Open image in new window. In the first part, the network throughput is defined as the average sum-rate of the network, which is shown to scale as Open image in new window. It is proved that the optimum power allocation strategy for each user for large Open image in new window is a threshold-based on-off scheme. In the second part, the network throughput is defined as the guaranteed sum-rate, when the outage probability approaches zero. It is demonstrated that the on-off power scheme maximizes the throughput, which scales as Open image in new window. Moreover, the optimum spectrum sharing for maximizing the average sum-rate and the guaranteed sum-rate is achieved at Open image in new window.

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Author: Jamshid Abouei - Alireza Bayesteh - Masoud Ebrahimi - Amir K. Khandani

Source: https://link.springer.com/







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