Nor Shahida Mohd Shah

  • Citations Per Year
Learn More
An adaptive delay control to maintain time-interleaving condition of multi-channel input signals of all-optical amplitude limiter based on saturation of four-wave mixing (FWM) in a nonlinear fiber is demonstrated. The delay control utilizes as a monitor signal the optical power after the nonlinear fiber at a wavelength that is affected by interchannel FWM(More)
Simulation of phase sensitive amplifier (PSA) of differential phase shift keying (DPSK) data signal in dual pump is presented. The PSA is designed and simulated using OptiSystem software. A dual pump PSA based on cascaded fiber optic parametric amplifier (FOPA) of 80Gbit/s DPSK data signal is investigated in detail on its gain and noise figure. Results show(More)
In long haul communication systems, the signal regeneration is frequently used technique that provides the long reach for high-speed transmission and reception systems. During high speed and distance transmission signal fades below a definite level due to transmission impairments; Bit error rate (BER) increases rapidly that degrades the system performance.(More)
The impact of random dispersion fluctuations on the gain and saturation behavior of a one-pump fiber optical parametric amplifier (1-P FOPA) in the presence of fourth-order dispersion coefficient (β4) is investigated. Three coupled amplitude equations with fiber losses are solved numerically for the calculation of the pump, signal, and idler. The(More)
Received Jun 8, 2017 Revised Aug 30, 2017 Accepted Sep 14, 2017 Massive multi-input–multi-output (MIMO) systems are crucial to maximizing energy efficiency (EE) and battery-saving technology. Achieving EE without sacrificing the quality of service (QoS) is increasingly important for mobile devices. We first derive the data rate through zero forcing (ZF) and(More)
Received Mar 3, 2017 Revised Aug 7, 2017 Accepted Aug 25, 2017 Massive multi-input, multi-output (MIMO) systems are an exciting area of study and an important technique for fifth-generation (5G) wireless networks that support high data rate traffic. An increased number of antenna arrays at the base station (BS) consumes more power due to a higher number of(More)
Progressive development in optical transmission technologies allows the growth of transmission speed and capacity. As the optical transmission system moves toward higher bit rates and more advanced technologies evolve, signal degradation becomes more dominant. Regeneration can refine the degraded signal and improve transmission performance. Conventionally,(More)
  • 1