Now showing items 118-137 of 268

  • Implementation of a High Throughput Soft MIMO Detector on GPU 

    Wu, Michael; Sun, Yang; Gupta, Siddharth; Cavallaro, Joseph R. (Springer, 2011-07-01)
    Multiple-input multiple-output (MIMO) significantly increases the throughput of a communication system by employing multiple antennas at the transmitter and the receiver. To extract maximum performance from a MIMO system, ...
  • Implementation of Channel Estimation and Multiuser Detection Algorithms for W-CDMA on Digital Signal Processors 

    Rajagopal, Sridhar; Xu, Gang; Cavallaro, Joseph R. (1999-08-20)
    Proposed algorithms for Third Generation W-CDMA communication systems have extremely high performance requirements. In this paper, we study the implementation issues involved for one of the proposed multiuser channel ...
  • Implementation of LS, MMSE and SAGE Channel Estimators for Mobile MIMO-OFDM 

    Ketonen, Johanna; Juntti, Markku; Ylioinas, Jari; Cavallaro, Joseph R. (IEEE, 2012-12-01)
    The use of decision directed (DD) channel estimation in a multiple-input multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) downlink receiver is studied in this paper. The 3GPP long term evolution ...
  • 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 ...
  • Improving Performance of a Space-Time Turbo Code in a Rayleigh Faded Channel 

    Huang, Everest; Gatherer, Alan; Muharemovic, Tarik; Hocevar , Dale (2001-10-20)
    Starting with an ordinary parallel concatenated turbo encoder in a block fading Rayleigh channel, we introduce bit-interleaving of the outputs, not for time diversity, but to increase the coding gain. We develop a guideline ...
  • Improving power efficiency in stream processors through dynamic cluster reconfiguration 

    Rajagopal, Sridhar; Rixner, Scott; Cavallaro, Joseph R. (2004-12-01)
    Stream processors support hundreds of functional units in a programmable architecture by clustering functional units and utilizing a bandwidth hierarchy. Clusters are the dominant source of power consumption in stream ...
  • An Integrated CAD Framework Linking VLSI Layout Editors and Process Simulators 

    Sengupta, Chaitali (1995-05-20)
    This thesis presents an Integrated CAD Framework which links VLSI layout editors to lithographic simulators and provides information on the simulated resolution of a feature to the circuit designer. This will help designers ...
  • An Integrated CAD Framework Linking VLSI Layout Editors and Process Simulators 

    Sengupta, Chaitali; Erdelyi, Miklos; Bor, Zsolt; Cavallaro, Joseph R.; Smayling, Michael C.; Szabo, Gabor; Tittel, Frank K.; Wilson, William L. (SPIE, 1996-03-01)
    As feature sizes in VLSI circuits extend into the far sub-micron range, new process techniques, such as using phase shifting masks for photolithography, will be needed. Under these conditions, the only means for the circuit ...
  • Interferometric Phase Shift Technique for High Resolution Deep UV Microlithography 

    Tittel, Frank K.; Cavallaro, Joseph R.; Kido, Motoi; Smayling, Michael C.; Szabo, Gabor; Wilson, William L. (SPIE, 1994-09-01)
    A new phase shifting technique based on interferometry has been developed which is especially suited for deep-UV microlithography. Using only a single layer chromium mask, with no additional phase shift elements, significant ...
  • Investigation of Reliability of Hydraulic Robots for Hazardous Environments Using Analytic Redundancy 

    Leuschen, Martin L.; Walker, Ian D.; Cavallaro, Joseph R. (IEEE, 1999-01-01)
    The Rosie mobile worksystem is a robot that is on the cutting edge of hazardous environment robotics. It is a heavy-duty hydraulic robot designed for nuclear reactor decontamination and dismantlement. The robot consists ...
  • Joint Detection Strategies for Orthogonal Frequency Division Multiplexing 

    Ahmed, Nadeem (2000-04-20)
    Traditional OFDM implementations use conventional Fourier filters for data modulation, via the IFFT operation. Much research suggests wavelet based OFDM provides performance gains, due to superior spectral containment ...
  • Joint signaling strategies for approaching the capacity of twisted-pair channels 

    Sendonaris, Andrew; Veeravalli, Venugopal V.; Aazhang, Behnaam (1998-10-20)
    A technique is presented for jointly optimizing the signaling in the two directions of transmission on a twisted-pair communications channel. It is then applied to twisted-pair channel models with monotonic channel response ...
  • Keeping the Analog Genie in the Bottle: A Case for Digital Robots 

    Walker, Ian D.; Cavallaro, Joseph R.; Leuschen, Martin L. (IEEE, 1999-05-01)
    In this paper, we consider the case for adopting a truly 'digital' type of robot, which would evolve between a discrete and finite set of states. We adopt the point of view that the advantages of traditional robotic evolution ...
  • Laboratory Workstations in Electrical Engineering 

    Aneshansley, Daniel J.; Pottle, Christopher; Cavallaro, Joseph R. (IBM, 1985-06-01)
    Computers, configured for data acquisition and control, have been used in undergraduate laboratories at Cornell University's School of Electrical Engineering since the early 1970s. The introduction of personal computers ...
  • Layered Dynamic Fault Detection and Tolerance for Robots 

    Visinsky, Monica L.; Walker, Ian D.; Cavallaro, Joseph R. (IEEE Computer Society Press, 1993-05-01)
    Fault tolerance is increasingly important for space and hazardous environment robotics. Robots need to quickly detect and tolerate internal failures in order to continue performing their tasks without the need for immediate ...
  • A low complexity and low power SoC design architecture for adaptive MAI suppression in CDMA systems 

    Guo, Yuanbin; Cavallaro, Joseph R. (2005-05-01)
    In this paper, we propose a reduced complexity and power efficient System-on-Chip (SoC) architecture for adaptive interference suppression in CDMA systems. The adaptive Parallel-Residue-Compensation architecture leads to ...
  • Low Complexity Iterative Multiuser Detection and Decoding for Real-Time Applications 

    Das, Suman; Erkip, Elza; Cavallaro, Joseph R.; Aazhang, Behnaam (IEEE, 2005-07-01)
    This paper presents a low-complexity multiuser decoding technique that can be implemented in real time for a convolutionally coded direct sequence code division multiple access (DS-CDMA) system. The main contribution, ...
  • Low complexity MMSE based interference cancellation for LTE uplink MIMO receiver 

    Yin, Bei; Cavallaro, Joseph R. (Wireless Innovation Forum, 2011-12-01)
    In this paper, we propose a novel low complexity minimum mean square error (MMSE) interference cancellation (IC) to minimize the residual inter-symbol and inter-antenna interference in LTE/LTE-Advanced uplink. In the ...
  • Low Complexity Opportunistic Decoder for Network Coding 

    Yin, Bei; Wu, Michael; Wang, Guohui; Cavallaro, Joseph R. (IEEE, 2012-12-01)
    In this paper, we propose a novel opportunistic decoding scheme for network coding decoder which significantly reduces the decoder complexity and increases the throughput. Network coding was proposed to improve the ...
  • 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. ...