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In this paper, we investigate threshold-based dual-hop relaying schemes in conjunction with partial relay selection in terms of outage probability and bit error probability. The best relay chosen by partial relay selection will transmit jointly with the source using either amplify-and-forward (AF) or decode-and-forward (DF) if the received signal-to-noise ratio (SNR) exceeds a given threshold; otherwise,...
In this paper, we propose a novel protocol for cooperative diversity based on decode-and-forward (DF) with iterative detection and decoding (IDD) receiver. Closed-form expression of outage probability is derived under quasi-static fading channels. Numerical results show that the proposed scheme achieves higher diversity order than traditional DF scheme without additional transmitter power.
In this paper, we consider a 2-hop wireless relay network where more than one relay is available. We explore optimal relay selection for decode-and-forward cooperative protocol to minimize the outage probability under a short-term power constraint. We first investigate the impact of power control on relay selection from a capacity point-of-view. Assuming the knowledge of channel gain magnitudes, we...
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