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QRD-QLD searching based sphere detection for emerging MIMO downlink OFDM receivers

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Title: QRD-QLD searching based sphere detection for emerging MIMO downlink OFDM receivers
Author: Radosavljevic, Predrag; Kim, Kyeong Jin; Cavallaro, Joseph R.
Type: Conference Paper
Publisher: IEEE
Citation: P. Radosavljevic, K. J. Kim and J. R. Cavallaro,"QRD-QLD searching based sphere detection for emerging MIMO downlink OFDM receivers," in IEEE Global Communications Conference (GLOBECOM), 2008, pp. 1-5.
Abstract: In this paper, a detection algorithm with parallel partial candidate-search algorithm is presented. Two fully independent partial search processes are simultaneously employed for two groups of transmit antennas based on QR and QL decompositions of the channel matrix. Proposed QRDQLD detection algorithm is compared with well-known QRD-M scheme adopted for several emerging wireless standards. Latency of the QRD-QLD candidate search is about twice as small for similar error-rate performance and for identical hardware resources. Total detection latency of QRD-QLD algorithm that also includes computation of soft information for outer decoder is also substantially smaller.
Date Published: 2008-11-01

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  • ECE Publications [1032 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