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Trellis-Search Based Soft-Input Soft-Output MIMO Detector: Algorithm and VLSI Architecture

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dc.contributor.author Sun, Yang
Cavallaro, Joseph R.
dc.date.accessioned 2012-06-22T20:33:32Z
dc.date.available 2012-06-22T20:33:32Z
dc.date.issued 2012-05-01
dc.identifier.other http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=6151849
dc.identifier.other 10.1109/TSP.2012.2187646
dc.identifier.uri http://hdl.handle.net/1911/64294
dc.description.abstract In this paper, we propose a trellis-search based soft-input soft-output detection algorithm and its very large scale integration (VLSI) architecture for iterative multiple-input multiple-output (MIMO) receivers. We construct a trellis diagram to represent the search space of a transmitted MIMO signal. With the trellis model, we evenly distribute the workload of candidates searching among multiple trellis nodes for parallel processing. The search complexity is significantly reduced because the number of candidates is greatly limited at each trellis node. By leveraging the trellis structure, we develop an approximate Log-MAP algorithm by using a small list of largest exponential terms to compute the LLR (log-likelihood ratio) values. The trellis-search based detector has a fixed-complexity and is very suitable for parallel VLSI implementation. As a case study, we have designed and synthesized a trellis-search based soft-input soft-output MIMO detector for a 4 4 16-QAM system using a 1.08 V TSMC 65 nm technology. The detector can achieve a maximum throughput of 1.7 Gb/s with a core area of 1.58 mm.
dc.language.iso eng
dc.publisher IEEE
dc.subject ASIC
MIMO algorithm
Soft-input soft-output
MIMO detection
Trellis-search algorithm
VLSI
dc.title Trellis-Search Based Soft-Input Soft-Output MIMO Detector: Algorithm and VLSI Architecture
dc.type Journal Paper
dc.citation.journalTitle IEEE Transactions on Signal Processing
dc.contributor.center Center for Multimedia Communication
dc.citation.volumeNumber 60
dc.citation.pageNumber 2617-2627
dc.citation.issueNumber 5
dc.type.dcmi Text
dc.identifier.citation Y. Sun and J. R. Cavallaro, "Trellis-Search Based Soft-Input Soft-Output MIMO Detector: Algorithm and VLSI Architecture," IEEE Transactions on Signal Processing, vol. 60, no. 5, pp. 2617-2627, 2012.

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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