Xin Shi
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Xin Shi has a total of 5 co-authors. Here are the top co-authors by number of shared publications:
- Chengzhen Bian
State Key Laboratory of ASIC and System, Key Laboratory for Information Science of Electromagnetic Waves (MoE), The Department of Communication Science and Engineering, School of Information Science and Technology, Fudan University, Shanghai 200433, China
1 shared publication - Hanyu Zhang
State Key Laboratory of ASIC and System, Key Laboratory for Information Science of Electromagnetic Waves (MoE), The Department of Communication Science and Engineering, School of Information Science and Technology, Fudan University, Shanghai 200433, China
1 shared publication - Jianjun Yu
Fudan University
1 shared publication - Siyao Mark Yu
The State Key Laboratory of ASIC and System, Key Laboratory for Information Science of Electromagnetic Waves (MoE), Fudan University, Shanghai 200433, China
1 shared publication - Zhongxiao Pei
State Key Laboratory of ASIC and System, Key Laboratory for Information Science of Electromagnetic Waves (MoE), The Department of Communication Science and Engineering, School of Information Science and Technology, Fudan University, Shanghai 200433, China
1 shared publication
Latest Publications
- Open Access
Demonstration of D-Band Millimeter-Wave Wireless Transmission Employing I/Q Mixing and Maximum-Ratio Combining
A photonics-assisted D-band wireless transmission system employing an in-phase/quadrature (I/Q) mixer and maximum-ratio combining (MRC) is experimentally demonstrated. Two intermediate-frequency (IF) outputs from a single radio-frequency input are digitized and processed separately. After channel estimation and equalization, the recovered complex baseband signals are coherently combined. A 32-Gbaud quadrature phase-shift keying orthogonal frequency-division multiplexing (QPSK-OFDM) signal with an effective payload rate of 38.65 Gb/s is transmitted over a 20 m indoor wireless link with a calculated optical-beat carrier frequency of 138.5 GHz. Across seven input optical power settings from −8 to −2 dBm, MRC provides an average signal-to-noise ratio (SNR) improvement of 1.78 dB and a maximum improvement of 2.32 dB relative to the higher-SNR single branch at each power. Combining also improves constellation convergence and reduces the bit error rate (BER), with the MRC output falling below the 7% hard-decision forward-error-correction threshold of 3.8 × 10−3 at the sampled power settings of −5 dBm and above. These results demonstrate improved signal quality through I/Q-branch combining in the investigated D-band link.
Open AccessDemonstration of D-Band Millimeter-Wave Wireless Transmission Employing I/Q Mixing and Maximum-Ratio Combining
A photonics-assisted D-band wireless transmission system employing an in-phase/quadrature (I/Q) mixer and maximum-ratio combining (MRC) is experimentally demonstrated. Two intermediate-frequency (IF) outputs from a single radio-frequency input are digitized and processed separately. After channel estimation and equalization, the recovered complex baseband signals are coherently combined. A 32-Gbaud quadrature phase-shift keying orthogonal frequency-division multiplexing (QPSK-OFDM) signal with an effective payload rate of 38.65 Gb/s is transmitted over a 20 m indoor wireless link with a calculated optical-beat carrier frequency of 138.5 GHz. Across seven input optical power settings from −8 to −2 dBm, MRC provides an average signal-to-noise ratio (SNR) improvement of 1.78 dB and a maximum improvement of 2.32 dB relative to the higher-SNR single branch at each power. Combining also improves constellation convergence and reduces the bit error rate (BER), with the MRC output falling below the 7% hard-decision forward-error-correction threshold of 3.8 × 10−3 at the sampled power settings of −5 dBm and above. These results demonstrate improved signal quality through I/Q-branch combining in the investigated D-band link.