Fast Transfer of Channel State Information in Wireless Systems


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Date: January 2008
Type: White Paper
Rating: (0)

Overview: In time-division duplex systems, where the basestation and mobiles share the same frequency band for transmission, the basestation can exploit reciprocity to obtain the forward channel from pilots received over the reverse channel. This paper published by Lucent Technologies describes the knowledge of accurate and timely Channel State Information (CSI) at the transmitter is becoming increasingly important in wireless communication systems. While it is often assumed that the receiver needs to know the channel for accurate power control, scheduling and data-demodulation, it is now known that the transmitter can also benefit greatly from this information.

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