Abstract
The facility of information exchange using wireless communication systems has affected many aspects of the modern lifestyle. In return for the growth of wireless applications, we have witnessed an ever growing demand for the high data rate wireless communication systems. However, the hostility of the wireless fading environment and channel variation makes the design of high rate communication system very challenging. To this end, multiple antenna systems have shown to be very effective in fading environment by providing significant performance improvements and achievable data rates in comparison to a single antenna systems. The performance gain achieved by multiple antenna system increases when the knowledge of the channel state information (CSI) at each end, either the receiver or transmitter, is increased. Although perfect CSI is desirable, practical systems are usually built on estimating the CSI at the receiver and possibly feeding back the CSI to the transmitter through a feedback link with a limited capacity.
Published Version
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