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Displacement MIMO Kalman equalizer architecture for CDMA downlink in fast fading channels

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dc.contributor.author Guo, Yuanbin
Zhang, Jianzhong (Charlie)
McCain, Dennis
Cavallaro, Joseph R.
dc.creator Guo, Yuanbin
Zhang, Jianzhong (Charlie)
McCain, Dennis
Cavallaro, Joseph R.
dc.date.accessioned 2007-10-31T00:46:04Z
dc.date.available 2007-10-31T00:46:04Z
dc.date.issued 2005-07-01
dc.date.submitted 2006-02-06
dc.identifier.uri http://hdl.handle.net/1911/19932
dc.description Journal Paper
dc.description.abstract In this paper, we explore the displacement structure in a Kalman equalizer for MIMO-CDMA downlink. A streamlined MIMO Kalman equalizer architecture is proposed to extract the commonality in the data path by exploiting the displacement structure of the transition matrix and the block-Toeplitz structure of the channel matrix. Numerical matrix multiplications with O(F^3) complexity are eliminated by simple data loading process. Utilizing the block Toeplitz structure of the channel matrix, an FFT-based acceleration is proposed to avoid direct matrix multiplications in the time domain. Finally, an iterative Conjugate-Gradient based algorithm is proposed to avoid the inversion of the innovation correlation matrix in Kalman gain calculation. The proposed architecture not only reduces the numerical complexity to O(F log2 F) per chip, but also facilitates the parallel and pipelined VLSI implementation for real-time processing.
dc.subject MIMO
Kalman filter
displacement structure
FFT
Conjugate Gradient.
dc.title Displacement MIMO Kalman equalizer architecture for CDMA downlink in fast fading channels
dc.type Journal Paper
dc.citation.bibtexName article
dc.citation.journalTitle IEEE Transactions on Wireless Communications
dc.date.modified 2006-02-06
dc.contributor.center Center for Multimedia Communications (http://cmc.rice.edu/)
dc.subject.keyword MIMO
Kalman filter
displacement structure
FFT
Conjugate Gradient.
dc.identifier.citation Y. Guo, J. (. Zhang, D. McCain and J. R. Cavallaro, "Displacement MIMO Kalman equalizer architecture for CDMA downlink in fast fading channels," IEEE Transactions on Wireless Communications, 2005.

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  • ECE Publications [1082 items]
    Publications by Rice University Electrical and Computer Engineering faculty and graduate students
  • CMC Publications [275 items]
    Publications by Rice Faculty and graduate students in multimedia communications