WiMAX and WiFi are considered as the promising broadband access solutions for wireless MANs and LANs, respectively. In the recent works WiMAX is considered suitable as a backhaul service to connect multiple dispersed WiFi „hotspots‟. Hence a new integrated WiMAX/WiFi architecture has been proposed in the literatures. In this paper the performances of integrated WiMAX/WiFi network have been investigated by using different „codecs ‟ proposed in the literatures. In this investigation two WiFi hotspots have been connected to a WIMAX network. One of the Hotspots is located two kilometer from the WIMAX base station and the other one is located one kilometer from the same. The network was simulated via OPNET simulator. Two types of statistical data namely the global statistical parameter and node end statistical data have been collected from the simulations. By comparing both types of data some recommendations are made for choosing an appropriate codec for the integrated WiMAX/WiFi network channel conditions [3]. The WiMAX MAC layer has a connection-oriented architecture that is designed to support a variety of applications, including voice and multimedia services. One of the potential applications of WiMAX is to provide backbone support for mobile WiFi hotspots. Traditionally wired connections are used as backhaul support for WiFi hotspots. But wired infrastructure is always considered expensive and it should be replaced by an alternative technology. Heterogeneous wireless networks consisting of WiMax and WiFi have been proposed in the literatures [9-10]. The architecture of this type of network is

Edge detection is a method to detect presence of an object’s image- typically this is identified by sharp changes in pixel density. We realized Canny Edge Detection Algorithm, the most optimal edge detector, in FPGA hardware utilizing Hardware-Software Co-Simulation with the help of Simulink (Mathworks) and System Generator (Xilinx). We explored and utilized different edge detection operators, in addition to Sobel, which is the typical such operator, for gradient calculation (the primary edge detection process). After comparative analysis, we found both Sobel and Robert operators among the best with hardware realization of Robert operator utilizing less resources (LUT & Flip-Flops). All the different versions of the algorithm was synthesized for

Bluetooth is a technology for short range wireless real-time data transfer between devices. It is becoming increasingly more prevalent in modern society, with technical gadgets now ranging from mobile phones and game controllers to PDAs and personal computers. In Bangladesh, use of technology has

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This paper analyzes the fundamental changes in market structures that may result from the increasing use of information technology. First, an analytic framework is presented and its usefulness is demonstrated in explaining several major historical changes in American business structures. Then

external international connections are certainly of growing importance, the influence of the national education system, industrial relations, technical and scientific institutions, government policies, cultural traditions and many other national institutions is fundamental. The historical examples

International surveys reveal wide differences between the views held in different countries concerning the causes of wealth or poverty and the extent to which people are responsible for their own fate. At the same time, social ethnographies and experiments by psychologists demonstrate individuals

-viction that unprecedented globalization has changed everything as con-siderably exaggerated; Americans are still so taken with the novelty of extensive international trade that they have yet to acquire a sense of per-spective about its importance. Even today the shares of imports and ex-ports in America's GDP are only

, the policy implications of stress research are clear and are important given current interest in health care reform in the United States. American Sociological Association Several decades ago, Selye (1956) focused research attention on noxious stressors and laboratory animals' patterned physiological

—but it departs from them in several respects. Advocates of system justification theory argue that (a) there is a general ideological motive to justify the existing social order, (b) this motive is at least partially responsible for the internalization of inferiority among members of disadvantaged groups, (c