Now showing items 1-11 of 11

  • FPGA in Wireless Communications Applications 

    Amiri, Kiarash; Duarte, Melissa; Cavallaro, Joseph R.; Dick, Chris; Rao, Raghu; Sabharwal, Ashutosh (Elsevier, Waltham, MA, 2012-07-12)
    In the past decade we have witnessed explosive growth in the wireless communications industry with over 4 billion subscribers worldwide. While first and second generation systems focused on voice communications, third ...
  • Low complexity scalable MIMO sphere detection through antenna detection reordering 

    Wu, Michael; Dick, Chris; Sun, Yang; Cavallaro, Joseph R. (Springer, 2012-07-01)
    This paper describes a novel low complexity scalable multiple-input multiple-output (MIMO) detector that does not require preprocessing and the optimal squared l2-norm computations to achieve good bit error (BER) performance. ...
  • Improving MIMO Sphere Detection Through Antenna Detection Order Scheduling 

    Wu, Michael; Dick, Chris; Cavallaro, Joseph R. (Wireless Innovation Forum, 2011-12-01)
    This paper proposes a novel scalable Multiple-Input Multiple-Output (MIMO) detector that does not require preprocessing to achieve good bit error rate (BER) performance. MIMO processing is a key technology in broadband ...
  • A High Throughput Configurable SDR Detector for Multi-user MIMO Wireless Systems 

    Amiri, Kiarash; Cavallaro, Joseph R.; Dick, Chris; Rao, Raghu Mysore (Springer, 2011-02-01)
    Spatial division multiplexing (SDM) in MIMO technology significantly increases the spectral efficiency, and hence capacity, of a wireless communication system: it is a core component of the next generation wireless systems, ...
  • Reduced Complexity Soft MMSE MIMO Detector Architecture 

    Amiri, Kiarash; Dick, Chris; Rao, Raghu; Cavallaro, Joseph R. (Wireless Innovation Forum, Inc., 2010-12-01)
    Computing the soft LLR values in MMSE receivers of MIMO systems requires a very large complexity. In this paper, we propose a reduced complexity soft MMSE detector for MIMO systems. We use different complexity reductions ...
  • A High Throughput Configurable SDR Detector for Multi-user MIMO Wireless Systems 

    Amiri, Kiarash; Cavallaro, Joseph R.; Dick, Chris; Rao, Raghu Mysore (Springer, 2009-04-08)
    Spatial division multiplexing (SDM) in MIMO technology significantly increases the spectral efficiency, and hence capacity, of a wireless communication system: it is a core component of the next generation wireless ...
  • Novel Sort-Free Detector with Modified Real-Valued Decomposition (M-RVD) Ordering in MIMO Systems 

    Amiri, Kiarash; Dick, Chris; Rao, Raghu; Cavallaro, Joseph R. (IEEE, 2008-11-01)
    K-best MIMO detection technique is the prominent method of simplifying the detection complexity in MIMO systems while maintaining BER performance comparable with the optimum maximum-likelihood (ML) detection technique. ...
  • Flex-Sphere: An FPGA Configurable Sort-Free Sphere Detector For Multi-user MIMO Wireless Systems 

    Amiri, Kiarash; Dick, Chris; Rao, Raghu; Cavallaro, Joseph R. (SDR Forum, 2008-10-01)
    Spatial division multiplexing (SDM) in MIMO technology significantly increases the spectral efficiency, and hence capacity, of a wireless communication system: it is a core component of the next generation wireless systems, ...
  • Design and Architecture of Spatial Multiplexing MIMO Decoders for FPGAs 

    Dick, Chris; Amiri, Kiarash; Cavallaro, Joseph R.; Rao, Raghu (IEEE, 2008-10-01)
    Spatial multiplexing multiple-input-multiple-output (MIMO) communication systems have recently drawn significant attention as a means to achieve tremendous gains in wireless system capacity and link reliability. The optimal ...
  • FPGA Implementation of Matrix Inversion Using QRD-RLS Algorithm 

    Karkooti, Marjan; Cavallaro, Joseph R.; Dick, Chris (2005-11-01)
    This paper presents a novel architecture for matrix inversion by generalizing the QR decomposition-based recursive least square (RLS) algorithm. The use of Squared Givens rotations and a folded systolic array makes this ...
  • FPGA Implementation of Matrix Inversion Using QRD-RLS Algorithm 

    Karkooti, Marjan; Cavallaro, Joseph R.; Dick, Chris (2005-10-01)
    This paper presents a novel architecture for matrix inversion by generalizing the QR decomposition-based recursive least square (RLS) algorithm. The use of Squared Givens rotations and a folded systolic array makes this ...