Abstract: The growth of 802.11-based wireless LANs provides higher data rates and greater system capacities. Among the IEEE 802.11 standards, the 802.11a standard based on OFDM modulation scheme has been defined for high-speed and large-system-capacity challenges. The paper firstly introduces WLAN and compares different WLAN standards. It presents the design of data scrambler and convolutional encoder for WLAN 802.11a transmitter, it also presents the synthesis and simulation results for the same using Xilinx CPLD XA9536XL-15-VQ44.

• Publication Date: 12-Mar-2012
• DOI: 10.15224/978-981-07-1847-3-761
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Abstract: This paper deals with a novel way to design a compact and portable air conditioner powered by the Solar PV module, without need of any fuel consumption and harmful refrigerant gases. The air conditioner is mainly designed keeping in mind, of using it in the cars replacing the conventional version of running the compressor by coupling it with the fuel driven car engine, thus preventing fuel consumption and producing green energy. The main feature of this model is its portability and energy efficient way of charging, thus saving the fuel that requires for a conventional car A.C. The following paper also deals an innovative method to design the controller circuit and the ice box where the dry ice is kept and used as refrigerant of the system. It is also found that the overall complexity of the car air conditioner till date is largely reduced in this model. This paper gives a comparative study of the energy efficiency in the present day car A.C. system driven by fuel and the model we desig

• Publication Date: 12-Mar-2012
• DOI: 10.15224/978-981-07-1847-3-762
• Views: 0
• Downloads: 0