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Dirty Paper Precoding Method For Multi-User MIMO-OFDM With Limited Feedback

Publication Date : 02/12/2015



Author(s) :

Ann Mary Thomas , Gayathri I. K.


Volume/Issue :
Volume 2
,
Issue 11
(12 - 2015)



Abstract :

This paper Investigates the performance of cellular networks employing multi-user MIMO transmission using dirty paper and block-diagonalization precoding. Considers the downlink of an OFDM-based LTE compliant multi-carrier system in which the users provide channel state information (CSI) to the base station via limited capacity feedback links. With limited feedback, residual interference between the spatially multiplexed users cannot be avoided, causing an interference-limitation of the achievable downlink throughput. Efficient CSI quantization is therefore central in such systems to achieve a performance gain over single-user MIMO. Propose an effective CSI feedback clustering approach in this work to exploit the correlation of the wireless channel in the frequency domain.


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Dirty Paper Precoding Method For Multi-User MIMO-OFDM With Limited Feedback

November 30, 2015