All-Optical Generation of Two IEEE802.11n Signals for 2 <inline-formula> <tex-math notation="TeX">$\times$</tex-math></inline-formula> 2 MIMO-RoF via MRR System

Abstract

A radio-over-fiber system capable of very spectrally efficient data transmission and based on multiple-input multiple-output (MIMO) and orthogonal frequency-division multiplexing (OFDM) is presented here. Carrier generation is the basic building block for implementation of OFDM transmission, and multicarriers can be generated using the microring resonator (MRR) system. A series of MRRs incorporated with an add/drop filter system was utilized to generate multicarriers in the 193.00999-193.01001-THz range, which were used to all-optically generate two MIMO wireless local area network radio frequency (RF) signals suitable for the IEEE802.11n standard communication systems, and single wavelengths at frequencies of 193.08, 193.1, and 193.12 THz with free spectral range of 20 GHz used to optically transport the separated MIMO signals over a single-mode fiber (SMF). The error vector magnitude (EVM) and bit error rate of the overall system performance are discussed. Results show that the generated RF signals wirelessly propagated through the MIMO channel using the 2 Â 2 MIMO Tx antennas. There is an acceptable EVM variation for wireless distance lower than 70, 30, and 15 m. It can be concluded that the transmission of both MIMO RF signals is feasible for up to a 50-km SMF path length and a wireless distance of 15 m.

A Review on MIMO Wireless Signals over Fibre for Next Generation Fibre Wireless (FiWi) Broadband Networks

“…However, it is not cost-effective, since the ONU has to be associated with a wireless modem to transfer the baseband signal to its final MIMO wireless format before the wireless transmission. Therefore, it is more appealing and less expensive to deploy RoF for the transmission of MIMO wireless signals over fibre [40][41][42][43][44][45]. Moreover, analogue signal transmission leads to simpler RAUs and the analogue signals generally obtain less bandwidth than their baseband equivalents [43].…”

“…In [45,63,72], comb techniques are used to generate separated wavelengths instead of requiring several optical sources (such as the one shown in Figure 8b to carry the WiFi MIMO signals). For example, in [45], multiple wavelengths are produced using a microring resonator (MRR) system. Then, each wavelength is used to carry IEEE802.11n MIMO signal.…”

Microring stereo sensor model using Kerr–Vernier effect for bio-cell sensor and communication

“…). The electric fields are circulated within the system and described by the equations ( 1)-( 3) [12], the input electric field is fed into the z-axis, where = = − − + , is the initial electric field amplitude, Where is the electric field amplitude (real), is the wave number in the direction of propagation (z-axis) and is the angular frequency [27][28][29], where is the initial phase.…”

All optical ultra-wideband signal generation and transmission using mode-locked laser incorporated with add-drop microring resonator

“…The III/V semiconductors (InGaAsP/InP) on the basis of InP with a direct bandgap is used to fabricate the ring resonator [24,25]. An input mode-locked laser is inserted into the input port of the add-drop MRR, and the resulting two output electric fields of the system can be expressed by E th and E drop [26,27]:…”