no code implementations • 8 Apr 2024 • Taixia Shi, Yang Chen, Jianping Yao
Integration of radar, wireless communications, and spectrum sensing is being investigated for 6G with an increased spectral efficiency.
no code implementations • 25 May 2023 • Xiaowei Li, Taixia Shi, Dong Ma, Yang Chen
For the first time, channelization measurement technology is introduced in the STFT system based on frequency sweeping and FTTM, greatly reducing the frequency-sweep range of the required frequency-sweep signal to the analysis bandwidth divided by the number of channels.
no code implementations • 3 Aug 2022 • Taixia Shi, Yang Chen
A photonics-assisted analog wideband RF self-interference (SI) cancellation and frequency downconversion approach for in-band full-duplex (IBFD) multiple-input multiple-output (MIMO) systems with adaptive digital amplitude and delay pre-matching is proposed based on a dual-parallel Mach-Zehnder modulator (DP-MZM).
no code implementations • 12 Nov 2021 • Taixia Shi, Dingding Liang, Moxuan Han, Yang Chen
The leakage cancellation scheme is used in a radar system.
no code implementations • 12 Nov 2021 • Moxuan Han, Taixia Shi, Yang Chen
The proposed method can solve the performance limitation in the previously reported SIC methods of constructing the multipath SI signal using a single reference caused by the limited dynamic range of the digital-to-analog converter when the direct-path SI signal is much stronger than the sub-weak reflection-path SI signals.
no code implementations • 7 Sep 2021 • Taixia Shi, Moxuan Han, Yang Chen
One dual-drive Mach-Zehnder modulator is used to implement the analog self-interference cancellation by pre-adjusting the delay and amplitude of the reference signal applied to the dual-drive Mach-Zehnder modulator in the digital domain.
no code implementations • 1 Sep 2021 • Taixia Shi, Yu Chen, Yang Chen
A photonic approach for radio-frequency (RF) self-interference cancellation (SIC) incorporated in an in-band full-duplex radio-over-fiber system is proposed.
no code implementations • 23 Apr 2021 • Taixia Shi, Yang Chen
The unknown RF signal is also SSB modulated on a carrier that has been modulated by a sweep signal, thus the unknown RF signal is converted to a sweep optical signal along with the sweep optical carrier.