Performance Improvement in MIMO Systems Using Rotating Codebooks
MIMO systems provide with the advantages of diversity and capacity. If the information regarding the channel is known to the transmitter, then the transmitter can accordingly weigh and transmit the data to achieve better performance. Receiver can estimate the channel conditions and the information can be sent to the transmitter through the control channel. But the bandwidth of the control channel is limited. The main aim of this paper is to improve the performance of the MIMO systems while employing lesser number of feedback bits. In this paper, the rotating mixed codebook technique is presented which helps in attaining the goal. Simulation results are also presented to show the gain achieved.
KeywordsMIMO precoding Limited feedback precoding
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