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Now a day's wireless LAN is widely used in many public spaces. Wireless access points expand wired network. It provides more flexibility to the users. There is a big risk that users connect to rogue access point (Rogue AP). Detection of rogue AP is a challenge for network administrator. Undetected rogue APs are serious threats which steal sensitive information from the network. There are many techniques used for detection of fake AP. But these solutions are expensive and not applicable for many scenarios. We need an effective solution which provides a high success rate for detection of rogue AP. In this paper we have discussed existing techniques for detection of rogue AP with its effectiveness and weaknesses. And also describe our solution for this major concern in wireless network.

Now-a-days, multimedia based applications have been developed rapidly. Digital information is easy to process but it allows illegal users to access the data. For protecting the data from this illegal use, Digital Rights Management (DRM) can be used. DRM allows secure exchange of digital data over internet or other electronic media. In this paper, FPGA based implementation of DWT alongwith Advanced Encryption Standard (AES) based watermarking is discussed. With this approach, improved security can be achieved. The complete system is designed using HDL and simulated using Questasim and MATLAB Simulink model. The synthesis result shows that this implementation occupies only 2117 slices and maximum frequency reported for this design is 228.064 MHz.

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Wireless technologies like Wifi, WiMAX, and LTE are using Multiple input and multiple output(MIMO) communications that are playing important role in achieving high data rates for. Bit error rate is one of the important performance parameters in multipath channels for data communication.This research proposes a new method based on RS coding to improve the efficacy of an STBC MIMO System in reducing BER in MPSK and MQAM in Rayleigh, Rician and Nakagami channels. It is based on the error detection and correction properties intrinsic to RS coding processes. Binary data is coded using an RS encoder and the modulated signal STBC encoded and transmitted through Rayleigh, Rician and Nakagami channels. Signals received by two antennas are STBC decoded, demodulated, RS decoded and tested for BER. Results show lower BER rates for RS Coded systems as compared for uncoded systems for both MPSK and MQAM for all three channels. In addition, it was found that reduction in BER is greater for high SNR but deteriorates for low SNR. Furthermore, this research observed that RS coding gives 63% to 98% improvement in BER in the Rayleigh as compared to Rician and Nakagami channels. This research has been able to successfully incorporate the BER reducing properties of RS coding to further enhance the efficacy of an STBC MIMO system.

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Nowadays, digital information is very easy to process, but it allows unauthorized users to access to this information. To protect this information from unauthorized access, cryptography is one of the most powerful and commonly used techniques. There are various cryptographic algorithms out of which advanced encryption standard (AES) is one of the most frequently used symmetric key cryptographic algorithms. The main objective of this chapter is to implement fast, secure, and areaefficient AES algorithm on a reconfigurable platform. In this chapter, AES algorithm is designed using Xilinx system generator, implemented on Nexys-4 DDR FPGA development board and simulated using MATLAB Simulink. Synthesis results show that the implementation consumes 121 slice registers, and its maximum operating frequency is 1102.536 MHz. Throughput achieved by this implementation is 14.1125 Gbps.