Design and Performance Analysis of the WDM Schemes for Radio over Fiber System With Different Fiber Propagation Losses

Abstract

The integration of optical and wireless networks increases mobility and capacity and decreases costs in access networks. Fibre optic communication can be considered optical communication that combines the methodologies of two communications, and it may be utilised in systems of wired and wireless communication. The solution for many problems is radio over fibre (RoF) because it can control many base stations (BS) that are connected to a central station (CS) with an optical fibre. The received RoF signal head for in a low quality; thus, many factors will result in some problems such as a high bit error rate (BER) and low Q-factor values, and the receiver might not be operating in a high data rate network. Wavelength division multiplexing (WDM) network can offer a solution to these problems where the transmission of different signals can be done with a single-mode fibre. BER should be reduced to assured values, and the Q-factor must be increased. The investigation of WDM-RoF with different lengths of fibre at various channel spacing will be simulated using Optisystem software, and the RoF’s receiver performance is measured and analyzed depending on the acquired BER, the value of the Q-factor, and the height of the opening of the eye diagram. The degradation factors effect such as attenuation and dispersion are significantly limited with the addition of an EDFA amplifier to a Single Mode Fibre (SMF).

A study of micro structural, magnetic and electrical properties of La-Co-Sm nanoferrites (LCSF) synthesized by sol-gel method

“…The groups at 604 cm-1 and 465 cm-1 spoke to td and oh complexes of LCSF spinal nanoferrites, individually. The IR vibration frequencies are observed to be in great concurrence with the standard literature [35,36].…”

Qualnet performances of grid-based clustering For WSN's routing protocols

“…DSR is mainly designed for limiting the procedure of bandwidth that is consumed by controlling packets which present in Ad hoc networks. The DSR significance mainly in reactive approach which means it eliminates the need of the network periodical broadcasting, and predominant in table driven approach [18,19].…”

Spectrum sensing and energy detection in cognitive networks

“…The concept behind the sharing properties is that the mobile user does not connected only with its operator, but also has the ability to link with other operator near the previous one by using sharing resources [1]. The sharing concept appear on the surface of modern wireless communication researches becasue of the high demand of wireless applications and the increase of mobile units in the last decades which leads to increase in radio access usage [2]. The demand increases due to the increase in wireless applications, internet of things (IoT) and using online multimedia with high data rate which absolutly leads to think about systems that is robust to face the future challenges and demands of mobile services.…”