This article proposes a digital two-stage phase noise (PN) compensation and residual carrier frequency offset (rCFO) and residual sampling clock offset (rSCO) tracking module in the baseband receiver side for single carrier (SC) systems in the millimeter-wave (mmW) band. The proposed two-stage PN compensation and rCFO/rSCO tracking module (2STG-PNC&T) includes a correlation-based linear interpolation method for the common phase error (CPE) of the low-frequency PN, a subsymbol CPE compensation with a reformed low-complexity $\boldsymbol {\pi /4}$ robust PN slicer for the high-frequency PN, and a tracking mechanism for rCFO and rSCO estimation on 64-QAM under the harsh PN condition of the frequency synthesizers used in the mmW band. The proposed module can restrict the maximum rCFO/rSCO within ±0.4 ppm and track the phase error caused by the PN successfully. Besides, the compensated power spectral density of the residual PN is reduced from −90 to −125 dBc/Hz at 1-MHz offset. A four-time parallelism architecture of the new 2STG-PNC&T is proposed to work at a 625-MHz clock rate under 64-QAM for 15 Gb/s transmission. The gate count/power of the proposed design is only 4.0%/6.9% of the overall digital baseband, respectively.

中文翻译：

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用于毫米波单载波系统的数字两阶段相位噪声补偿和rCFO / rSCO跟踪模块

本文针对毫米波中的单载波（SC）系统，在基带接收器侧提出了一种数字两阶段相位噪声（PN）补偿以及残余载波频率偏移（rCFO）和残余采样时钟偏移（rSCO）跟踪模块。 mmW）频段。拟议的两级PN补偿和rCFO / rSCO跟踪模块（2STG-PNC＆T）包括针对低频PN的公共相位误差（CPE）的基于相关性的线性插值方法，以及经过改进的低频补偿的子符号CPE补偿。复杂 $ \ boldsymbol {\ pi / 4} $ 健壮的PN限幅器，用于高频PN，以及在mmW频带中使用的频率合成器的苛刻PN条件下，对64-QAM进行rCFO和rSCO估计的跟踪机制。所提出的模块可以将最大rCFO / rSCO限制在±0.4 ppm之内，并成功跟踪由PN引起的相位误差。此外，在1MHz偏移处，残余PN的补偿功率谱密度从-90降低到-125 dBc / Hz。提出了一种新的2STG-PNC＆T的四次并行体系结构，以在64-QAM下以625-MHz时钟速率工作，传输速率为15 Gb / s。拟议设计的门数/功耗分别仅为整个数字基带的4.0％/ 6.9％。