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dc.contributor.authorRadosavljevic, Predrag
Kim, Kyeong Jin
Shen, Hao
Cavallaro, Joseph R. 2012-06-27T16:12:30Z 2012-06-27T16:12:30Z 2012-06-01
dc.identifier.citation P. Radosavljevic, K. J. Kim, H. Shen and J. R. Cavallaro, "Parallel Searching-Based Sphere Detector for MIMO Downlink OFDM Systems," IEEE Transactions on Signal Processing, vol. 60, no. 6, 2012.
dc.description.abstract In this paper, implementation of a detector with parallel partial candidate-search algorithm is described. Two fully independent partial candidate search processes are simultaneously employed for two groups of transmit antennas based on QR decomposition (QRD) and QL decomposition (QLD) of a multiple-input multiple-output (MIMO) channel matrix. By using separate simultaneous candidate searching processes, the proposed implementation of QRD-QLD searching-based sphere detector provides a smaller latency and a lower computational complexity than the original QRD-M detector for similar error-rate performance in wireless communications systems employing four transmit and four receive antennas with 16-QAM or 64-QAM constellation size. It is shown that in coded MIMO orthogonal frequency division multiplexing (MIMO OFDM) systems, the detection latency and computational complexity of a receiver can be substantially reduced by using the proposed QRD-QLD detector implementation. The QRD-QLD-based sphere detector is also implemented using Field Programmable Gate Array (FPGA) and application specific integrated circuit (ASIC), and its hardware design complexity is compared with that of other sphere detectors reported in the literature.
dc.description.sponsorship Nokia Renesas Mobile
dc.description.sponsorship Texas Instruments
dc.description.sponsorship Xilinx
dc.description.sponsorship National Science Foundation
dc.language.iso eng
dc.publisher IEEE
Bounded soft sphere detector
Field programmable gate array (FPGA)
Implementation complexity
Latency analysis
QL decomposition (QLD)
QR decomposition (QRD)
QRD-QLD-based parallel candidate search
dc.title Parallel Searching-Based Sphere Detector for MIMO Downlink OFDM Systems
dc.type Journal article
dc.citation.journalTitle IEEE Transactions on Signal Processing Center for Multimedia Communication
dc.citation.volumeNumber 60
dc.citation.issueNumber 6
dc.type.dcmi Text
dc.type.dcmi Text
dc.citation.firstpage 3240
dc.citation.lastpage 3252

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  • CMC Publications [268]
    Publications by Rice Faculty and graduate students in multimedia communications
  • ECE Publications [1289]
    Publications by Rice University Electrical and Computer Engineering faculty and graduate students

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