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This study addresses the general problem of efficient resource management in wireless networks with arbitrary time-varying topologies. Communication channels are assumed to generally accommodate multiple simultaneous transmissions. In this context, we focus our attention on the problem of distributed transmission power allocation and medium access by links (transmitter-receiver pairs) that require...
This paper extends the discrete Verhulst power equilibrium method, previously suggested in to the power-rate optimal allocation problem. Multirate users associated with different types of traffic are aggregated to distinct user' classes, with the assurance of target rate allocation per user and QoS. Therein, single-rate Verhulst power allocation algorithm was adapted to the multirate DS/CDMA power...
This paper investigates a Decode-and-Forward (DF) two-hop relaying system in which Orthogonal Frequency Division Multiplexing (OFDM) is used. The relay forwards the message received from the source on a subset of available subchannels in the second time slot. Firstly, a pairing and selecting algorithm is proposed. Then, power will be allocated to the both base station and relay station under individual...
Medium access control (MAC) represents a vital part of any wireless network and directly affects important quality-of-service (QoS) measures such as the end-to-end delay or data throughput. In this study, we evaluate the delay performance and robustness of a distributed adaptive MAC scheme for power-controlled wireless networks with shared communication channels. The scheme was proposed in our previous...
This paper addresses the margin adaptive (MA) problem in MIMO OFDMA multi-cell networks, when the transmitter only has statistical channel state information. Resource allocation is distributed within each base station. A distributed convergence criterion for power control is determined and included within iterative power allocation. An approximate analytical expression is obtained for the outage capacity,...
We consider the downlink transmission with multiple sources. Each source transmits over an orthogonal channel by using cooperative broadcasting. Each destination is required to receive and decode a given amount of information. A destination can receive different partitions of information from multiple sources. The sources cooperate and allocate the flow rates along each link to minimize the maximum...
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