This paper describes the behavior of two popular thin-QR decomposition algorithms when they are implemented using fixed-point arithmetic. This behavior is studied in the context of a V-BLAST receiver, and the effects of the limited precision are evaluated in terms of their impact on the receiver's bit error rate. Our analysis of V-BLAST under these conditions shows a strong dependence on the numerical precision, for both the integer and fractional parts. We have also identified an “error floor” effect, where the bit error rate reaches a limit and stops improving even if the precision is increased. In addition, we have determined the minimum fixed-point word size required not to adversely impact the performance for a variety of antenna array sizes.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Performance of V-BLAST Receivers Using Limited-Precision QR Decomposition


    Contributors:


    Publication date :

    2009-09-01


    Size :

    498447 byte




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



    Testing High Precision Space Receivers Versus Lightsquared Interference

    Esterhuizen, Stephan / Turbiner, Dmitry / Stowers, Dave et al. | NTRS | 2012



    Advanced Interference Detection and Mitigation in Septentrio's High Precision Receivers

    De Wilde, Wim / Sleewaegen, Jean-Marie / Bougard, Bruno et al. | British Library Conference Proceedings | 2015


    Performance Analysis of Both Shot- and Thermal-Noise Limited MultiPulse PPM Receivers in Gamma-Gamma Atmospheric Channels

    Morra, A.E. / Khallaf, H.S. / Shalaby, H.M.H. et al. | British Library Online Contents | 2013


    Limited speed precision measuring instrument for elevator

    ZHANG XUTAO | European Patent Office | 2021

    Free access