ملخص الدراسة:

The next generation of access networks is rushing the needs for the convergence of wired and wireless services to offer end users greater choice, convenience and variety in an efficient way. This scenario will require the simultaneous delivery of voice, data and video services with mobility feature to serve the fixed and mobile users in a unified networking platform. In other words, new telecom systems require high-transmission bandwidths and reliable mobility. The Radio over Fiber (RoF) technology represents a key solution for satisfying these requirements, since it jointly takes advantage of the huge bandwidth offered by optical communications systems with the mobility and flexibility provided by wireless systems. RoF systems consist of heterogeneous networks formed by wireless and optical links. RoF technology provides the advantage of eliminating the gateways, since there is no need for analogous-digital or digital-analogous conversions. This simplifies the system complexity and reduces the operational costs. For these reasons, this proposed research will focus on improvement of data rate using Optical Orthogonal Frequency Division Multiplexing (OOFDM) and direct detection to achieve very high data rate with better Bit Error Rate (BER) and improving the capacity of the system. The Quadrature Amplitude Modulation (QAM), 4QAM, 16QAM and 64QAM Orthogonal Frequency Division Multiplexing (OFDM) RoF system describes with different number of subcarriers and shows a BER of value of zero. OptiSystem simulation program is used for the simulation and Bit Error Rate (BER) is obtained and verified.

توثيق المرجعي (APA)

Al Shantti, Ahmed Said (2012). Optical Orthogonal Frequency Division Multiplexing Direct Detection for Improving Capacity of Radio over Fiber Transmission System. الجامعة الإسلامية - غزة. 18909