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- W2472481520 abstract "In a spectrum-sharing underlay environment, we carry out a comprehensive outage probability analysis for a secondary (unlicensed) system operating with a limited feedback from the primary (licensed) system. We focus on single-user single- input multiple-output (SIMO) secondary communications where the direct link is being assisted by a set of single-antenna decode-and- forward (DF) relay nodes acting in a halfduplex selective-and-incremental relaying mode. For practicality reasons, we consider that the secondary system transmitting nodes are only capable of acquiring a limited interference channel state information (I-CSI) of the underlying cognitive radio interference channels. Accordingly, the cumulative distribution functions (CDF) of the received signal-to-noise ratio (SNR) at the secondary receiving nodes are devised in recursive and tractable closed-form expressions. These statistics are then used to derive the exact end-to-end secondary system outage probability. Also, we investigate the asymptotic outage analysis of the secondary network, and derive the achievable diversity-and-multiplexing tradeoff (DMT). Finally, the analytical and simulation results are compared and interestingly shown to perfectly match while revealing that limited I-CSI acquisition by the secondary system is more favored than its spectrum-consuming counterpart." @default.
- W2472481520 created "2016-07-22" @default.
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- W2472481520 date "2016-05-01" @default.
- W2472481520 modified "2023-09-25" @default.
- W2472481520 title "Exact Outage Analysis of SIMO Relay-Aided Underlay Communications with Limited Feedback" @default.
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- W2472481520 doi "https://doi.org/10.1109/vtcspring.2016.7504243" @default.
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