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In this paper we have implemented experimental testbed of heterogeneous mobile ad hoc network. We consider nodes equipped with Ethernet, 802.11g and Bluetooth. A switching algorithm is proposed that run on nodes having multiple interfaces called gateway nodes. Switching algorithm performs two functions. First it captures the network traffic and performs the switching decision, second it forwards the...
Wireless local area networks (WLAN) provide network connectivity and flexibility at a very low cost. Last two decades have seen the exponential growth in this area. Institute of Electrical and Electronics Engineers (IEEE) ratified IEEE standard 802.11 in 1999, which is the defacto wireless standard. Security flaws were soon detected in this standard, and as a result amendments / enhancements were...
Wireless local area networks provide the connectivity at low cost with greater flexibility and mobility. IEEE 802.11 is the defacto wireless standard. It was designed to provide security however it failed to do so. As a result amendments/enhancements were made to overcome the flaws by first introducing Wi-Fi protected access (WPA) and then IEEE 802.11i. But both these enhancements failed to achieve...
In this paper, the architecture of a 64-point FFT for the OFDM technique used in WLAN standards is proposed. FFT is a complex function whose computational accuracy, hardware size and processing speed depends on the type of arithmetic format used to implement it. Due to the non-linearity of FFT, its computational accuracy is not easy to calculate theoretically. Therefore statistical or simulation methods...
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