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- W4372263460 abstract "Overlay cognitive radio (CR) networks include a primary and cognitive base station (BS) sharing the same frequency band. This paper focuses on designing a robust symbol-level pre-coding (SLP) scheme where the primary BS shares data and quantized channel state information (CSI) with the cognitive BS. The proposed approach minimizes the cognitive BS transmission power under symbol-wise Safety Margin (SM) constraints for both the primary and cognitive systems. We apply the additive quantization noise model to describe the statistics of the quantized PBS CSI and employ a stochastic constraint to formulate the optimization problem, which is then converted to be deterministic. Simulation results show that the robust SLP protects the primary users from the effect of the imperfect CSI and simultaneously offers significantly improved energy efficiency compared to nonrobust methods." @default.
- W4372263460 created "2023-05-07" @default.
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- W4372263460 date "2023-06-04" @default.
- W4372263460 modified "2023-10-14" @default.
- W4372263460 title "Overlay Cognitive Radio Using Symbol Level Precoding With Quantized CSI" @default.
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- W4372263460 doi "https://doi.org/10.1109/icassp49357.2023.10095726" @default.
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