4.6-km D-Band Photonic-Assisted Terahertz Wireless Communication Employing SIMO and MRC Technology

作     者：Zhang, Qiutong Yu, Jianjun Zhao, Xianming Li, Weiping Wei, Yi Yang, Xiongwei Tan, Jingwen Zhang, Bing Wang, Kaihui Zhang, Ying Wang, Yanyi Zhou, Wen Liu, Bo Zhao, Feng Yu, Jianguo 

作者机构：Fudan Univ State Key Lab ASIC & Syst Key Lab Informat Sci Electromagnet Waves MoE Shanghai 200433 Peoples R China Fudan Univ Sch Informat Sci & Technol Shanghai 200433 Peoples R China Harbin Inst Technol Inst Future Informat Technol Harbin 150001 Peoples R China Shanghai Univ Sch Commun & Informat Engn Shanghai 200444 Peoples R China Nanjing Univ Informat Sci & Technol Inst Opt & Elect Nanjing 210044 Peoples R China Xian Univ Posts & Telecommun Sch Elect Engn Xian 710121 Peoples R China Beijing Univ Posts & Telecommun Sch Elect Engn Beijing 100876 Peoples R China 

出 版 物：《IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES》 (IEEE Trans. Microwave Theory Tech.)

年 卷 期：2024年第72卷第11期

页      面：6657-6668页

核心收录：

学科分类：0808[工学-电气工程] 08[工学] 

基　　金：National Key Research and Development Program of China 

主　　题：Terahertz communications Wireless communication Signal processing algorithms Photonics Training Bandwidth Optical filters Diversity gain heterodyne detection multiple-input-multiple-output (MIMO)-maximum ratio combining (MRC) photon-assisted terahertz (THz) communication single-input-multiple-output (SIMO) 

摘      要：Photon-assisted generation of terahertz (THz)signals can support larger modulation bandwidths in future ultrahigh-speed wireless communication systems. Single-input-multiple-output(SIMO)or multiple-input-multiple-output(MIMO) technology effectively uses the spatial dimension to improve the quality of the received signal, such as signal-to-noise ratio (SNR) and bit error rate (BER) ratio. Therefore, we experimentally demonstrate D-bandphoton-assisted THz 1 x 2 SIMO 4.6-km wireless communication. We use a photon-assisted THz technology to generate a 124.37-GHzD-band signal, which is received according to the maximum ratio combining (MRC) technology after 1 x 2 SIMO wireless transmission and uses fully blind digital signal processing (DSP)for carrier recovery algorithm without any training sequence. According to the experimental results, the maximum SNR diversity gain between 1 x 1 and 1 x 2 SIMO can be up to2.8 dB. After the MRC algorithm, the BER can be reduced by one order of magnitude, which is less than 15% of soft decision forward error correction (SD-FEC). This is the first experimental demonstration of high gain and long range in a D-band THz 1 x 2 SIMO system with a line rate of 43.5 Gb/s. These results will provide important assistance to our future efforts in photon-assisted THz wireless communications.