High-speed tournament givens rotation-based QR Decomposition Architecture for MIMO Receiver

Min Woo Lee, Ji Hwan Yoon, Jongsun Park

    Research output: Contribution to conferencePaperpeer-review

    10 Citations (Scopus)

    Abstract

    This paper presents a high-speed hardware architecture of an improved Givens rotation-based QR decomposition, named tournament-based complex Givens rotation (T-CGR). In the proposed approach, more than one pivots are selected and zero-insertion processes of Givens-rotations are performed in parallel like tournament in order to increase the throughput. As a result, the QR decomposition performance significantly increases compared to the triangular systolic array (TSA) approach. Moreover, the circuit area was reduced due to the smaller number of flip-flops for holding the computed results during the decomposition process. The proposed QR decomposition hardware was implemented using TSMC 0.25 um technology. The experimental results show that the proposed architecture achieves 73.00% speed-up over the TACR/TSA-based architecture for the 8 × 8 matrix decomposition.

    Original languageEnglish
    Pages21-24
    Number of pages4
    DOIs
    Publication statusPublished - 2012
    Event2012 IEEE International Symposium on Circuits and Systems, ISCAS 2012 - Seoul, Korea, Republic of
    Duration: 2012 May 202012 May 23

    Other

    Other2012 IEEE International Symposium on Circuits and Systems, ISCAS 2012
    Country/TerritoryKorea, Republic of
    CitySeoul
    Period12/5/2012/5/23

    ASJC Scopus subject areas

    • Hardware and Architecture
    • Electrical and Electronic Engineering

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