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Sensing-throughput tradeoff for cooperative multiple-input single-output cognitive radio

机译：协作多输入单输出认知无线电的传感吞吐量权衡

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摘要

In this paper, we propose a new cooperative multiple-input single-output (MISO) cognitive radio (CR) system, which can use some of the antennas to transmit its data and the others to help to transmit the data of the primary user (PU) by performing cooperative communication if the presence of the PU is detected through the cooperative spectrum sensing. A new cooperative sensing-throughput tradeoff model is proposed, which maximizes the aggregate rate of the CR by jointly optimizing sensing time and spatial sub-channel power, subject to the constraints of the aggregate rate of the PU, the false alarm and detection probabilities, the aggregate interference to the PU and the aggregate power of the CR. Simulation results show that compared with the conventional scheme, the proposed cooperative scheme can achieve the larger aggregate rate of the CR, while keeping the aggregate rate of the PU invariable with the increasing of the interference. Copyright (c) 2013 John Wiley & Sons, Ltd.
机译：在本文中，我们提出了一种新的协作式多输入单输出（MISO）认知无线电（CR）系统，该系统可以使用一些天线来传输其数据，而其他天线则可以帮助传输主要用户的数据（如果通过协作频谱感测检测到PU的存在，则通过执行协作通信来进行PU）。提出了一种新的协作感测吞吐量折衷模型，该模型通过共同优化感测时间和空间子信道功率，从而最大程度地提高CR的总速率，但要考虑到PU的总速率，虚警和检测概率，对PU的总干扰和CR的总功率。仿真结果表明，与常规方案相比，所提出的协作方案可以实现较大的CR总速率，同时保持PU的总速率随干扰的增加而不变。版权所有（c）2013 John Wiley＆Sons，Ltd.

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