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The paper presents the review about GI-FI which is a new wireless technology. GI-FI will help to push wireless communications to faster drive. For many years cables were used as a medium of communication or data transfer. Optical fibres played a dominant role for its higher bit rates and faster transmission. But the installation of cables in optical fibre caused a greater difficulty and thus led to wireless access. Initially wireless technology includes Infrared which was a very slow technology further inventions were done to make wireless technology a better for communication and the invention of Bluetooth, Wi-Fi, WIMAX moved wireless communication to a new era.
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