基于混合精度模數(shù)轉換器的大規(guī)模MIMO-OFDM系統(tǒng)性能分析

劉凱; 陳貴潮; 陶成; 周濤

doi:10.11999/JEIT181136

基于混合精度模數(shù)轉換器的大規(guī)模MIMO-OFDM系統(tǒng)性能分析

doi: 10.11999/JEIT181136 cstr: 32379.14.JEIT181136

劉凱¹,
陳貴潮¹,
陶成¹,
周濤^{1, 2, ,}

1.
北京交通大學寬帶無線移動通信研究所北京 100044
2.
東南大學移動通信國家重點實驗室南京 211189

基金項目: 國家自然科學基金(61701017)，中央高?；究蒲袠I(yè)務費專項資金(2018JBM003)，北京市自然科學基金(4174102)，東南大學移動通信國家重點實驗室開放研究基金(2018D11)

詳細信息

作者簡介:
劉凱：男，1987年生，博士生，研究方向為大規(guī)模MIMO

陳貴潮：男，1996年生，碩士生，研究方向為大規(guī)模MIMO、低精度量化

陶成：男，1963年生，教授，博士生導師，研究方向為無線通信、MIMO、擴頻通信

周濤：男，1988年生，副教授，研究方向為信道測量與建模

通訊作者:
周濤　taozhou@bjtu.edu.cn

中圖分類號: TN929.5
計量
- 文章訪問數(shù): 3725
- HTML全文瀏覽量: 1346
- PDF下載量: 118
- 被引次數(shù): 0
出版歷程
- 收稿日期: 2018-12-10
- 修回日期: 2019-02-02
- 網(wǎng)絡出版日期: 2019-06-01
- 刊出日期: 2019-11-01

Performance Analysis of Massive MIMO-OFDM System with Mixed-precision Analog-to-digital Converter

Kai LIU¹,
Guichao CHEN¹,
Cheng TAO¹,
Tao ZHOU^{1, 2
, ,}

1.
Institute of Broadband Wireless Mobile Communications, Beijing Jiaotong University, Beijing 100044, China
2.
National Mobile Communications Research Laboratory, Southeast University, Nanjing 211189, China

Funds: The National Natural Science Foundation of China (61701017), The Fundamental Research Funds for the Central Universities (2018JBM003), The Beijing Natural Science Foundation (4174102), The Research Fund of National Mobile Communications Research Laboratory, Southeast University (2018D11)

摘要

摘要: 該文對在接收端使用混合精度的模數(shù)轉換器且采用迫零接收算法的大規(guī)模MIMO-OFDM系統(tǒng)的上行鏈路的頻譜效率和能量效率進行了研究。采用加性量化噪聲模型來對系統(tǒng)的性能進行分析，推導出整個系統(tǒng)的頻譜效率和能量效率的近似閉式表達式，并通過仿真證明了表達式的正確性。研究結果表明，系統(tǒng)的頻譜效率和每個用戶的發(fā)送功率，接收端天線數(shù)目和接收端量化精度有關。數(shù)值和仿真結果還表明可以通過增加基站端的天線數(shù)量來補償由低精度模數(shù)轉換器帶來的性能損失。
- MIMO-OFDM /
- 混合精度量化 /
- 頻譜效率 /
- 能量效率
Abstract: The spectral efficiency and energy efficiency of the uplink of massive MIMO-OFDM system is studied using mixed-precision Analog-Digital Converter (ADC) and Zero-Forcing (ZF) reception algorithm at the receiver. By using the additive quantization noise model to analyze the performance of the system, the approximate closed expression of the spectral efficiency and energy efficiency of the whole system is derived, and the correctness of the expression is proved by simulation. The research results show that the spectral efficiency of the system is related to the transmission power of each user, the number of antennas at the receiver and the quantization accuracy of the receiver. Numerical and simulation results also show that the performance loss caused by the low-precision ADC can be compensated by increasing the number of antennas at the base station.
- MIMO-OFDM /
- Mixed-precision quantification /
- Spectral efficiency /
- Energy efficiency

HTML全文

圖 1 混合ADC大規(guī)模MIMO-OFDM系統(tǒng)接收端模型

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圖 2 上行鏈路用戶平均速率隨用戶發(fā)射功率的曲線變化

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圖 3 上行鏈路用戶平均可達速率隨量化精度b的曲線變化

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圖 4 上行鏈路用戶平均可達速率隨$\gamma $的曲線變化

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圖 5 上行鏈路用戶平均速率隨基站天線數(shù)目的曲線變化

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圖 6 大規(guī)模MIMO-OFDM系統(tǒng)能量效率和量化精度的關系

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圖 7 大規(guī)模MIMO-OFDM系統(tǒng)能量效率和基站天線數(shù)目的關系

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圖 8 ${\rho _{\rm{u}}} $=10 dB時系統(tǒng)總功耗和總頻譜效率之間的關系

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表 1 不同量化精度的失真因子

b(bit) 1 2 3 4 5

$\rho $ 0.3634 0.1175 0.0345 0.0095 0.0025

下載: 導出CSV

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