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In this paper, a study on the end-to-end performance of multihop non-regenerative relaying over independent and identical generalized-gamma fading channels is presented. Novel closed-form bounds for the cumulative distribution function, the moments, and the moment generating function (MGF) of the end-to-end signal-to-noise ratio are presented. Using the MGF-based approach, closed-form expressions...
In this paper, we propose an output-threshold multiple relay selection scheme for dual-hop multi-branch cooperative wireless networks. The proposed scheme selects the first Lc arbitrary ordered relays out of L relays such that the maximal ratio combined signal-to-noise-ratio (SNR) of the Lc relayed paths and the direct path barely exceeds a preset threshold. Closed-form expressions are derived for...
In this paper, we analyze the performance of cooperative diversity wireless networks using amplify-and-forward (AF) or decode-and-forward (DF) relaying over independent, non-identically distributed Nakagami-m fading channels. We derive the symbol error probability (SEP) using the moment generating function (MGF) of the end-to-end signal-to-noise-ratio (SNR) at the destination. In AF relaying, and...
The performance of beamforming in dual-hop cooperative networks with fixed-gain relays is investigated. These kinds of relays offer low complexity and ease of deployment when compared with variable-gain relays. In our analysis, the source and destination nodes are equipped with multiple antennas, whereas the relay is assumed to be a single-antenna device. Closed-form expressions for the outage probability...
In this paper, the outage performance of a dual-hop amplify-and-forward (AF) cooperative diversity system with a maximal-ratio combining receiver at the destination terminal in Rician fading environments with different K-factors is investigated. The signal-to-noise ratio (SNR) at the receiver is upper bounded. Closed-form expressions for the probability density function (PDF) and the moment generating...
The outage probability is a fundamental performance metric, which has been widely investigated in the literature. In this paper, we develop a general method to compute the outage given the moment generating function (MGF). When computing the outage using the MGF, integration along the standard Bromwich contour suffers from a loss of accuracy due to oscillatory nature of the integrand. One can address...
Cooperative diversity enables single antenna transmitter in a multi-user or relay environment to share the antennas so as to achieve diversity gain. In this work, the cooperative communication system with distributed Alamouti code is investigated, where amplify-and-forward (AF), adaptive decode-and-forward (DF) or hybrid AF/DF are used at the relay, with both Rayleigh fading and path loss effect introduced...
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