Transmission of Wireless MIMO-Type Signals Over a Single Optical Fiber Without WDM

The Scientific World Journal

Al-Gailani

et al. 2014

The optical fiber is well adapted to pass multiple wireless signals having different carrier frequencies by using radio-over-fiber (ROF) technique. However, multiple wireless signals which have the same carrier frequency cannot propagate over a single optical fiber, such as wireless multi-input multi-output (MIMO) signals feeding multiple antennas in the fiber wireless (FiWi) system. A novel optical frequency upconversion (OFU) technique is proposed to solve this problem. In this paper, the novel OFU approach is used to transmit three wireless MIMO signals over a 20 km standard single mode fiber (SMF). The OFU technique exploits one optical source to produce multiple wavelengths by delivering it to a LiNbO3 external optical modulator. The wireless MIMO signals are then modulated by LiNbO3 optical intensity modulators separately using the generated optical carriers from the OFU process. These modulators use the optical single-sideband with carrier (OSSB+C) modulation scheme to optimize the system performance against the fiber dispersion effect. Each wireless MIMO signal is with a 2.4 GHz or 5 GHz carrier frequency, 1 Gb/s data rate, and 16-quadrature amplitude modulation (QAM). The crosstalk between the wireless MIMO signals is highly suppressed, since each wireless MIMO signal is carried on a specific optical wavelength.

show abstract

Section: Discussionmentioning

confidence: 99%

“…The technique used here [10] improves the system performance [9], where the phase and amplitude of the single sidebands were more matched. The proposed approach decreased the maximum crosstalk level between the different MIMO channels as compared to transporting the same signals by using SCM technique.…”

Section: Introductionmentioning

confidence: 99%

Optical Frequency Upconversion Technique for Transmission of Wireless MIMO-Type Signals over Optical Fiber

The Scientific World Journal

Al-Gailani

et al. 2014

show abstract

“…These techniques are not cost-effective, since multiple optical sources and photodetectors are required. Transmission of three wireless MIMO signals over an optical fiber is proposed and demonstrated using an electrical single sideband frequency-translation (ESSB-FT) technique [12]. The main disadvantage using this approach is the need to use local oscillators at the transmitting and receiving sides, moreover, it has a relatively low data rate.…”

Section: Introductionmentioning

confidence: 99%

New RoF-PON architecture using polarization multiplexed wireless MIMO signals for NG-PON

Elmagzoub

et al. 2015

Optics Communications

“…These techniques are not cost-effective, since multiple optical sources and PDs are required. Transmission of three wireless MIMO signals over an optical fiber is proposed and demonstrated using an electrical single sideband frequency-translation (ESSB-FT) technique [11]. The main disadvantages about this approach are using local oscillators at the transmitting and receiving sides, and it has relatively low data rate.…”

Section: Introductionmentioning

confidence: 99%

Simultaneous provision of two MIMO wireless and baseband wired services in a single wavelength

Elmagzoub

2014 IEEE 5th International Conference on Photonics (ICP)

et al. 2014