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— Spectrum sensing is a challenging task for cognitive radio. Energy detection is one of the popular spectrum sensing technique for cognitive radio. In this paper we analyze the performance of energy detection technique to detect primary user (PU). Simulation results show that the probability of detection increases significantly when signal to noise ratio(More)
Mobile ad hoc network (MANET) represents a system of wireless nodes that can freely and dynamically self-organize into arbitrary and temporary network topologies, allowing people and devices to seamlessly internet-work in areas without any preexisting communication infrastructure. The routing protocols of this network elapsed much time in route discovery(More)
Spectrum sensing is the key component of cognitive radio technology. However, detection is compromised when a user experiences shadowing or fading effects. In such cases, user cannot distinguish between an unused band and a deep fade. Thus, cooperative spectrum sensing is proposed to optimize the sensing performance. We focus performance of cooperative CR(More)
The demand for mobile radio communications is ever increasing and is expected to be high bandwidth. However, there is a limit to current radio frequency resources. A good resource management scheme in integrated wireless LAN and cellular networks should support as many mobile & laptop users as possible while maintaining the necessary quality of service.(More)
Orthogonal Frequency Division Multiplexing (OFDM) is considered to be a promising technique against the multipath fading channel for wireless communications. However, OFDM faces the Peak-to-Average Power Ratio (PAPR) problem that is a major drawback of multicarrier transmission system which leads to power inefficiency in RF section of the transmitter. This(More)
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