Robust Power Allocation Algorithms for Wireless Relay Networks

Power Allocation Strategies in Block-Fading Two-Way Relay Networks

This paper aims at investigating the superiority of power allocation strategies, based on calculus of variations in a point-to-point two-way relay-assisted channel incorporating the amplify and forward strategy. Single and multilayer coding strategies for two cases of having and not having the channel state information (CSI) at the transmitters are studied, respectively. Using the notion of cal...

A Study on Resource Allocation Algorithms in Wireless Relay Networks

In this paper, the multicast routing problem in wireless relay networks is considered. The resource allocation problem in IEEE 802. 16j WIMAX Networks is discussed. The relay stations are used to improve the transmission quality in WIMAX networks. Most existing approaches try to reduce the energy consumption of a multicast tree. In contrast, the maximization problem to increase the number of re...

Energy-efficient power allocation algorithms for mobile wireless sensor networks

This paper proposes new distributed algorithms of adaptive transmit power allocation in wireless sensor networks for improving the efficiency of energy management. The proposed algorithms are based on two fundamental criteria namely: the distance between the sensor and the base station, and the distance between the sensor and its two-hop neighbors. Hence, each sensor can manage its own transmis...

Resource Allocation in Wireless Relay Networks

Power Allocation In Cooperative Relay Channels

This paper concerns power allocation in relay-assisted wireless channels for two-hop transmission. First, the transmitter sends the information to both the relay and receiver parts. Next, in the second hop, the transmitter cooperates with the relay to increase the received signal to noise ratio (SNR), assuming the relay makes use of the Amplify and Forward (AF) strategy. Moreover, it is assumed...