In this study, the authors derive the exact closed-form expression of the outage probability for coded cooperation using power-based approach. They consider a generalised system model with n relays (n > 1) over Nakagami-m fading channels. They also obtain the optimal number of relays for the given outage performance. Furthermore, they find analytically the critical cooperation ratio at which th...

We derive the system throughput and outage probability performance of adaptive modulation with optimal power control in log-normal shadowing and multipath Rayleigh fading channels. We propose two objective functions, namely, maximin-SIR optimum power control and minimum outage probability optimum power control. A dynamic programming based solution to find the optimum transmit power vector is pr...

We analyze the ergodic capacity and channel outage probability for a composite MIMO channel model, which includes both fast fading and shadowing effects. The ergodic capacity and exact channel outage probability with space-time water-filling can be evaluated through numerical integrations, which can be further simplified by using approximated empirical eigenvalue and maximal eigenvalue distribu...

This paper proposes a new scheme that couples power control with a minimum outage probability multiuser detector. The resultant iterative algorithm is conceptually simple and finds the minimum sum power of all users with a set of outage probability constraints. Bounds on the outage probability expression are found that extend a previous result that did not include receiver noise. These bounds a...

In this paper, new classes of lower bounds on the outage error probability and on the mean-square-error (MSE) in Bayesian parameter estimation are proposed. The minima of the h-outage error probability and the MSE are obtained by the generalized maximum a-posteriori probability and the minimum MSE (MMSE) estimators, respectively. However, computation of these estimators and their corresponding ...

This paper studies the coordinated beamforming (CoBF) design in the multiple-input single-output interference channel, assuming only channel distribution information given a priori at the transmitters. The CoBF design is formulated as an optimization problem that maximizes a predefined system utility, e.g., the weighted sum rate or the weighted max-min-fairness (MMF) rate, subject to constraint...

In this paper we study the end-to-end outage performance of multihop cooperative communication systems employing amplify and forward (AaF) relaying under Rayleigh, Nakagami, Rician and Weibull fading channels. The outage probability performances of multi-hop systems with fixed gain and variable gain relays is compared. The outage probability for multi-hop systems under Rayleigh, Nakagami and We...

In this paper, we propose a cooperative diversity scheme to improve the end-to-end outage performance via Alamouti space-time block coding with two transmit antennas at a source node in a backward link and a best-relay selection scheme in a forward link. We derive an exact closed-form expression of the outage probability for the proposed scheme over a Rayleigh fading channel and analyze end-to-...

In this study, we derive new expressions for the probability of outage where a mobile unit receives a Nakagami desired signal and multiple, cochannel, independent Nakagami interferers. Unlike some previous results, the expressions are usable when the Nakagami fading parameter, m , is not necessarily an integer. An exact formula is also derived for the outage probability when the desired signal ...