Millimeter-wave and Terahertz frequencies, while promising high throughput and abundant spectrum, are highly susceptible to hardware non-idealities like phase-noise, which degrade the system performance and make transceiver implementation difficult. While several phase-noise compensation techniques have been proposed, there are limited results on the post-compensation system performance. Consequently, in this paper, a generalized reference-signal (RS) aided low-complexity phase-noise compensation technique is proposed for high-frequency, multi-carrier systems. The technique generalizes several existing solutions and involves an RS that is transmitted in each symbol, occupies adjacent sub-carriers, and is separated from the data by null sub-carriers. A detailed theoretical analysis of the post-phase-noise compensation performance is presented for an analog beamforming receiver under an arbitrary phase-noise model. Using this analysis, the performance-impact of several system parameters is examined and the throughput-optimal designs for the RS sequence, RS bandwidth, power allocation, number of null sub-carriers, and the number of estimated phase-noise spectral components are also derived. Simulations performed under 3GPP compliant settings suggest that the proposed scheme is robust to phase-noise modeling errors and can, with the optimized parameters, achieve better performance than several existing solutions.

中文翻译：

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具有优化相位噪声补偿的模拟波束成形系统的性能

毫米波和太赫兹频率虽然有望实现高吞吐量和丰富的频谱，但很容易受到硬件非理想性（如相位噪声）的影响，这会降低系统性能并使收发器实现困难。虽然已经提出了几种相位噪声补偿技术，但对补偿后系统性能的影响有限。因此，在本文中，针对高频多载波系统提出了一种广义参考信号 (RS) 辅助的低复杂度相位噪声补偿技术。该技术概括了现有的几种解决方案，涉及在每个符号中传输的RS，占用相邻的子载波，并通过空子载波与数据分开。对任意相位噪声模型下的模拟波束成形接收机的相位噪声补偿性能进行了详细的理论分析。使用这种分析，检查了几个系统参数的性能影响，并针对 RS 序列、RS 带宽、功率分配、空子载波数量和估计的相位噪声频谱分量的数量进行了吞吐量优化设计。衍生的。在符合 3GPP 的设置下执行的模拟表明，所提出的方案对相位噪声建模错误具有鲁棒性，并且可以通过优化的参数实现比几种现有解决方案更好的性能。检查了几个系统参数的性能影响，并导出了 RS 序列、RS 带宽、功率分配、空子载波数量和估计相位噪声频谱分量数量的吞吐量优化设计。在符合 3GPP 的设置下执行的模拟表明，所提出的方案对相位噪声建模错误具有鲁棒性，并且可以通过优化的参数实现比几种现有解决方案更好的性能。检查了几个系统参数的性能影响，并推导出了 RS 序列、RS 带宽、功率分配、空子载波数量和估计相位噪声频谱分量数量的吞吐量优化设计。在符合 3GPP 的设置下执行的模拟表明，所提出的方案对相位噪声建模错误具有鲁棒性，并且可以通过优化的参数实现比几种现有解决方案更好的性能。