A 42.2-Gb/s 4.3-pJ/b 60-GHz Digital Transmitter With 12-b/Symbol Polarization MIMO
A 42.2-Gb/s 4.3-pJ/b 60-GHz Digital Transmitter With 12-b/Symbol Polarization MIMO
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DOI：
10.1109/jssc.2019.2943924
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发表时间：
2019-12
影响因子：
5.4
通讯作者：
C. Thakkar;A. Chakrabarti;Shuhei Yamada;D. Choudhury;J. Jaussi;B. Casper
中科院分区：
文献类型：
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作者：
C. Thakkar;A. Chakrabarti;Shuhei Yamada;D. Choudhury;J. Jaussi;B. Casper
免许可 57–71-GHz 无线频谱提供高吞吐量和可扩展的个人区域连接。为了实现高速节能信令，我们推出了一种功率回退高效数字极化发射机 (TX)，支持每秒多千兆符号的切换速率和高达正交频分复用 (OFDM) 64-QAM 的高阶调制。用于频谱滤波的直接数字调制波形输出的脉冲整形是通过低过采样率和模拟滤波以低功率实现的。频率可配置本地振荡器 (LO) 链支持通道绑定和选择。使用差分双极化 (DP) 印刷电路板 (PCB) 天线以低面积开销实现多输入多输出 (MIMO)，支持同步垂直/水平 (V/H) 极化数据流和高交叉极化 (X-pol) 隔离。具有偏振 MIMO 的 0.9V 28nm CMOS TX 原型可在 4.3pJ/b 效率和 12b/符号 OFDM/单载波 (SC) 信令下实现高达 42Gb/s 的吞吐量。
The unlicensed 57–71-GHz wireless spectrum offers high throughput and scalable personal area connectivity. To implement high-speed energy-efficient signaling, we present a power back-off-efficient digital polar transmitter (TX) supporting multi-gigasymbol per second switching rates and higher order modulations up to orthogonal frequency-division multiplexing (OFDM) 64-QAM. Pulse shaping of the direct digitally modulated waveform outputs for spectral filtering is achieved in low power with a low oversampling ratio and analog filtering. Channel bonding and selection is supported with a frequency configurable local oscillator (LO) chain. Multiple-input multiple-output (MIMO) is implemented with low area overhead using a differential dual-polarization (DP) printed circuit board (PCB) antenna supporting simultaneous vertical/horizontal (V/H)-polarization data streams and high cross-polarization (X-pol) isolation. The 0.9-V 28-nm CMOS TX prototype with polarization MIMO achieves up to 42-Gb/s throughput at 4.3-pJ/b efficiency and 12 b/symbol of OFDM/single-carrier (SC) signaling.