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Communication technology requires being sustainable in the sense of people's satisfaction for high data rate multimedia communication. Communication channel is the main constraint to achieve high speed data communication. The Third-Generation (3G) and Fourth-Generation (4G) mobile communications are expected to provide a high-rate data services beyond 2 Mbps utilizing WCDMA, CDMA2000, OFDM and UWB. The capacity improvement of wireless network has drawn considerable attention utilizing Smart Antenna based Multiple-Input Multiple-Output (MIMO) technology. MIMO utilizes multiple antenna arrays at both the transmitter and receiver side of a communication link and significantly improves the capacity over the single antenna system.
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