Afreen Azhari

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A theoretical analysis is presented to evaluate the impact of fiber chromatic dispersion on the bit error rate performance of a direct sequence optical code division multiple access (DS-OCDMA) system with intensity modulation and direct detection (IM/DD) transmission link using sequence inversion keyed (SIK) optical correlator. Computed results are(More)
An ultrawideband (UWB) radar-based breast cancer detection system, which is composed of complementary metal–oxide–semiconductor integrated circuits, is presented. This system includes Gaussian monocycle pulse (GMP) generation circuits, switching (SW) matrix circuits, equivalent-time sampling circuits, and a compact UWB antenna array. During the detection(More)
  • Md. Mobarok, Hossain Rubel, +13 authors F. M. Abbou
  • 2012
In this paper we study and analyze Bit Error Rate (BER) performance for optical communication system using Differential Phase Shift Keying (DPSK) modulation scheme. Specifically, after developing an approximate form BER expression, we study the BER performance for different system parameters such as fiber length, gain and number of amplifier. With the aid(More)
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