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- W2005406957 abstract "The optimization of the pilot overhead in single-user wireless fading channels is investigated, and the dependence of this overhead on various system parameters of interest (e.g., fading rate, signal-to-noise ratio) is quantified. The achievable pilot-based spectral efficiency is expanded with respect to the fading rate about the no-fading point, which leads to an accurate order expansion for the pilot overhead. This expansion identifies that the pilot overhead, as well as the spectral efficiency penalty with respect to a reference system with genie-aided CSI (channel state information) at the receiver, depend on the square root of the normalized Doppler frequency. Furthermore, it is shown that the widely-used block fading model is only a special case of more accurate continuous fading models in terms of the achievable pilot-based spectral efficiency, and that the overhead optimization for multiantenna systems is effectively the same as for single-antenna systems with the normalized Doppler frequency multiplied by the number of transmit antennas." @default.
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- W2005406957 date "2010-01-01" @default.
- W2005406957 modified "2023-09-26" @default.
- W2005406957 title "Optimum pilot overhead in wireless communication: A unified treatment of continuous and block-fading channels" @default.
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- W2005406957 doi "https://doi.org/10.1109/ew.2010.5483526" @default.
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