Photonics-Assisted Millimeter-Wave Wireless Communication

80-GHz RoF Based on Push–Pull Modulator

“…Finally, it is recorded using a 120 GSa/s and 45 GHz bandwidth real time digital storage oscilloscope (OSC). Offline digital signal processing (DSP) techniques such as down-conversion, constant-modulus-algorithm (CMA) equalization, carrier recovery and bit error rate (BER) calculation are adopted to recover the data captured by OSC from the 8 GHz IF signal [3].…”

“…Only one laser source and one I/Q modulator were employed to produce the W-band vector mm-wave signals. This single sideband (SSB) modulated mm-wave signals can tolerate fiber dispersion [12]- [13], and as an efficient and economical modulation technique, has been employed in broad-band RoF system for decades [3]. In this work, we present a push-pull modulator based W-band mm-wave vector signal generation scheme.…”

16-QAM Vector Terahertz-Wave Signal Generation by Simple MZM-Based Optical Frequency Comb

“…Recently, there has been ever-growing research interest in the ultlization of THz-band (300 GHz -500 GHz) with huge bandwidth available and vector signal modulation with high spectral efficiency in optical fiber-wireless seamless networks to meet the needs of emerging high capacity mobile communication [1][2][3][4][5][6][7][8]. Photonic vector THz-wave signal generation is turning into a prospective technique, which can produce high quality and easily tunable radio frequency carriers in the spectral region with large bandwidth available for wideband communication.…”

D-band Millimeter Wave Generation and Transmission Though Radio-Over-Fiber System

“…Radio-over-Fiber (RoF) or Terahertz-over-Fiber (ToF) system has become one of the promising candidate for the future high speed broadband access network [1], [2]. It is an effective way to meet the high-speed transmission demands to settle tens of gigabits per second peak throughputs [3], [4].…”

“…In this paper, employing a modulation scheme of cascaded IM and I/Q modulator, as well as the optical carrier suppression (OCS) and SSB modulation techniques, we experimentally demonstrated 2-Gbaud 16QAM, 4-Gbaud QPSK, and 8-Gbaud QPSK D-band wireless vector signal generation and transmission over 22.5 km single-mode-fiber (SMF-28) and 1 m wireless link with a Bit-Error-Rate (BER) under the threshold of 3.8 × 10 −3 , respectively. Compared with the existing SSB modulation schemes [2], [8], [13], [16], [17], in our proposed scheme, we do not need an optical filter to remove the undesired optical sidebands. Furthermore, SSB modulation has high modulation efficiency and insensitive to fiber dispersion, that is no fading effect by using SSB modulation.…”