Signal Detection for Ambient Backscatter System with Multiple Receiving Antennas

被引：0

作者：

Ma, Zhen ^{[1
]}

Zeng, Tengchan ^{[2
]}

Wang, Gongpu ^{[1
]}

Gao, Feifei ^{[3
]}

机构：

[1] Beijing Jiaotong Univ, Sch Comp & Informat Technol, Beijing, Peoples R China

[2] Beijing Jiaotong Univ, Sch Elect & Informat Engn, Beijing, Peoples R China

[3] Tsinghua Natl Lab Informat Sci & Technol, Beijing, Peoples R China

来源：

2015 IEEE 14TH CANADIAN WORKSHOP ON INFORMATION THEORY (CWIT) | 2015年

关键词：

Ambient backscatter; multiple antennas; signal detection; battery-free tag; RFID;

D O I：

暂无

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

"Ambient backscatter" is a new communication technology that utilizes ambient radio frequency signals to enable battery-free devices to communicate with each other. In this paper, we formulate a new transmission model when the reader is equipped with multiple antennas and propose a new way for signal detection when the channel state information is unknown. We derive an approximate closed-form detection threshold to identify the transmitted symbols and also analyze the corresponding bit error rate (BER) performance. It is found that increasing number of receiving antennas will lead to lower BER, while there exists an error floor when the antenna number is above certain level. Finally, simulation results are provided to corroborate our theoretical studies.

引用

页码：50 / 53

页数：4

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