-------------------------------------------------------------------ABSTRACT-----------------------------------------------------------------In the present paper, we have proposed Radio over fiber (ROF) technology which allows radio frequency (RF) transmission directly over the optical fiber has attracted much attention due to its promising performance and operational cost reduction. The well kn...

Radio-over-fiber (RoF) schemes offer the possibility of permitting direct access to native format services for the domestic user. A low power requirement and cost effectiveness are crucial to both the service provider and the end user. Here, we present an ultra-low cost and power RoF scheme using direct modulation of commercially-available 1344 nm and 1547 nm VCSELs by band-group 1 UWB wireless...

One of the ultimate goals in next generation network design is to achieve an ubiquitous environment enabling connectivity between any wireless access system with optical fiber core network. Radio on Fiber (RoF) technology has been applied to realize a universal platform for transparently carrying various types of wireless services. By applying free-space optics (FSO) communication techniques co...

Broadband, low loss and cost-effective transmission capability of optical fiber links has led to an ever-increasing interest in their use for the generation and distribution of millimeter-wave (mm-wave) signals for broadband wireless access networks and sensor networks. In this paper, some new techniques in photonic generation of mm-wave signals for radio-over-fiber (RoF) network applications a...

Future communication needs to be ubiquitous, broadband, convergent, and seamless. Radio over fiber (RoF) technology is one of the most important enabler in access network for the technologies. Adoption of RoF faces bottleneck in optoelectronics, that they are still expensive, high power consumption, and limited in bandwidth. To solve the problem, transceiver in remote antenna unit (RAU) is deve...

We present and experimentally demonstrate a new method to generate optical carrier suppressed-differential phase-shift keying (OCSDPSK) modulation format in radio over fiber (RoF) systems. In our scheme, a single dual-parallel Mach-Zehnder modulator (DPMZM) is used to produce OCS-DPSK signal based on amplitude shift keying (ASK) to DPSK format conversion by suppressing the spectral tones of an ...

The growth of wireless data systems is seen in the many new standards which have recently been developed or currently in under development. The two major development trends of communication are broadband and wireless, and the existing wireless communication system cannot carry high-speed multimedia service signals because of limited bandwidth, so how to realize high-speed wireless access has be...

 The biggest limitation of Radio over Fiber (ROF) links in a wireless network is its limited dynamic range due to ‘Non Linear Distortions’ (NLD). In this paper a higher order adaptive filter based modeling and predistortion scheme is proposed to compensate this NLD. The filter is adapted from the distortions of vectormodulated symbols, so that no in-depth knowledge of physical link parameters ...

PC Coupler DC bias Combiner Abstract— In this paper, all-optical signal processors that perform both microwave mixing and bandpass filtering in a radio-over-fiber (RoF) link are presented. The key device is a Mach-Zehnder modulator (MZM) which performs all-optical microwave mixing. An up-converted microwave signal is obtained and other unwanted frequency components are suppressed at the end of ...

This paper consist a simulation study of nonlinear distortion (NLD) for radio over fiber (RoF) link. The simulation is performing on OptiSystem platform. The investigation of the nonlinear effect in done by electrical cancellation point, output power, oscilloscope visualizer, types of modulation and laser power etc.