Ergodic rate analysis of cooperative multiple input multiple output ambient backscatter communication system

doi:10.11772/j.issn.1001-9081.2021020312

Journal of Computer Applications ›› 2022, Vol. 42 ›› Issue (3): 974-979.DOI: 10.11772/j.issn.1001-9081.2021020312

• Network and communications • Previous Articles Next Articles

Ergodic rate analysis of cooperative multiple input multiple output ambient backscatter communication system

Xin ZHENG¹, Suyue LI¹, Anhong WANG¹(), Meiling LI¹, Sami MUHAIDAT², Aiping NING¹

^1.School of Electronic and Information Engineering，Taiyuan University of Science and Technology，Taiyuan Shanxi 030024，China
^2.Department of Electrical Engineering and Computer Science，Khalifa University，Abu Dhabi 999041，United Arab Emirates

Received:2021-03-02 Revised:2021-04-22 Accepted:2021-04-23 Online:2021-05-14 Published:2022-03-10
Contact: Anhong WANG
About author:ZHENG Xin， born in 1994， M. S. candidate. Her research interests include ambient backscatter， cooperative communication.
LI Suyue， born in 1980， Ph. D.， associate professor. Her research interests include key technology performance analysis of 5G and 6G wireless communication system， channel estimation， signal detection.
LI Meiling， born in 1982， Ph. D.， professor. Her research interests include cognitive radio， cooperative communication， Non-Orthogonal Multiple Access （NOMA） and physical layer security.
Sami MUHAIDAT， born in 1972， Ph. D.， professor. His research interests include wireless communication， physical layer security， internet of things.
NING Aiping， born in，1974， Ph. D.， lecturer. Her research interests include intelligent information processing.
Supported by:
National Natural Science Foundation of China(62072325)

协作多输入多输出环境反向散射通信系统遍历速率分析

郑鑫¹, 李素月¹, 王安红¹(), 李美玲¹, MUHAIDAT Sami², 宁爱平¹

^1.太原科技大学电子信息工程学院，太原 030024
^2.Khalifa大学电子工程与计算机科学系，阿布扎比 999041，阿拉伯联合酋长国

通讯作者: 王安红
作者简介:郑鑫（1994—），女，山西临汾人，硕士研究生，主要研究方向：环境反向散射、协作通信
李素月（1980—），女，河南扶沟人，副教授，博士，主要研究方向：5G、6G无线通信系统关键技术性能分析、信道估计、信号检测
李美玲（1982—），女，山西宁武人，教授，博士，主要研究方向：认知无线电、协作通信、非正交多址接入和物理层安全； Sami MUHAIDAT（1972—），男，教授，博士，主要研究方向：无线通信、物理层安全、物联网
宁爱平（1974—），女，山西稷山人，讲师，博士，主要研究方向：智能信息处理。
基金资助:
国家自然科学基金资助项目(62072325)

Abstract

Abstract:

To solve the problems of large energy consumption and scarcity of spectrum resources in the traditional Internet of Things （IoT）， a Multiple Input Multiple Output-Ambient Backscatter Communication （MIMO-AmBC） system model which is constructed by an ambient backscatter， a Cooperative Receiver （CRx） and ambient Radio Frequency （RF） source was proposed. First， the system model was analyzed by using the Parasitic Symbiotic Radio （PSR） scheme to derive the Signal-to-Noise Ratio （SNR）. Secondly， the approximate expressions for the ergodic rates of the primary link and the backscatter link were derived， and the maximum expression for the ergodic rate of the backscatter link was obtained. Finally， the proposed system model was compared with the traditional cellular network and Commensal Symbiotic Radio （CSR） scheme. The experimental results verify the correctness of the theoretical derivation and give some meaningful conclusions：1） the backscatter link rate increases with the logarithm of the number of receiving antennas and has nothing to do with the number of transmitting antennas； 2） when the SNR is 10 dB， the sum rate of the PSR scheme is higher than those of the traditional scheme and the CSR scheme by 36.8% and 29.9% respectively. Although the primary link rate of the PSR scheme is 5.5% lower than that of the CSR scheme， the ergodic rate of the backscatter link is 7.7 times higher than that of the CSR scheme， which provides theoretical reference for choosing the AmBC symbiosis scheme for practical applications.

Key words: Internet of Things (IoT), Cooperative Receiver (CRx), Multiple Input Multiple Output (MIMO), ambient backscatter, ergodic rate

摘要：

针对传统物联网（IoT）能耗大、频谱资源稀缺的问题，提出了由环境反向散射、协作接收机（CRx）和环境射频（RF）源共同构建的协作多输入多输出环境反向散射通信（MIMO-AmBC）系统模型。首先，通过使用PSR方案对该系统模型进行分析，推导出信噪比（SNR）；其次，推导出主链路和反向散射链路的遍历速率近似表达式，并得到反向散射链路遍历速率最大值表达式；最后，将其与传统蜂窝网络、CSR方案作对比。实验结果验证了理论推导的正确性并给出有意义结论：1）反向散射链路速率随接收天线数对数增长，与发射天线数无关。2）在SNR为10 dB时，PSR方案的和速率比传统方案、CSR方案分别提升36.8%和29.9%，虽然PSR方案的主链路速率比CSR方案降低5.5%，但反向散射链路的遍历速率比CSR方案提升7.7倍。为实际应用选取AmBC共生方案提供了理论参考。

关键词: 物联网, 协作接收机, 多输入多输出, 环境反向散射, 遍历速率

CLC Number:

TN911

Xin ZHENG, Suyue LI, Anhong WANG, Meiling LI, Sami MUHAIDAT, Aiping NING. Ergodic rate analysis of cooperative multiple input multiple output ambient backscatter communication system[J]. Journal of Computer Applications, 2022, 42(3): 974-979.

郑鑫, 李素月, 王安红, 李美玲, MUHAIDAT Sami, 宁爱平. 协作多输入多输出环境反向散射通信系统遍历速率分析[J]. 《计算机应用》唯一官方网站, 2022, 42(3): 974-979.

Figures/Tables 5

Fig. 1 Cooperative MIMO-AmBC system model

Fig. 2 Ergodic rates at different M and N

Fig. 3 Ergodic rate curve with the number of receiving antennas N

Fig. 4 Ergodic rate of CRx under different α （SNR=20 dB）

Fig. 5 Ergodic rate comparison between PSR and CSR

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Ergodic rate analysis of cooperative multiple input multiple output ambient backscatter communication system

协作多输入多输出环境反向散射通信系统遍历速率分析

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