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- W2108311950 abstract "In this paper, we investigate the relay placement and power allocation for decode-and-forward (DF) cooperative relaying over correlated lognormal shadowed Rayleigh fading channels. Assuming that maximum-ratio combining is performed at the destination, we first derive an upper bound of symbol error rate (SER) with M-phase-shift keying (PSK) modulation. Then, three optimization problems are formulated to minimize the obtained SER upper bound, namely optimal relay placement with fixed power allocation, optimal power allocation with fixed relay location, and joint optimization of relay placement and power allocation. It is shown by the analytical results that the correlation coefficients and the standard deviations of shadowing have significant impacts on the optimal relay placement and power allocation. The simulation results validate our analysis and show that the SER upper bound is asymptotically tight in the high signal-to-noise ratio (SNR) regime." @default.
- W2108311950 created "2016-06-24" @default.
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- W2108311950 date "2014-03-18" @default.
- W2108311950 modified "2023-09-26" @default.
- W2108311950 title "Optimization of relay placement and power allocation for decode-and-forward cooperative relaying over correlated shadowed fading channels" @default.
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- W2108311950 doi "https://doi.org/10.1186/1687-1499-2014-41" @default.
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