Now showing items 1-6 of 6

  • Bit Interleaved Space-Time Codes 

    Muharemovic, Tarik; Gatherer, Alan; Ebel, Will; Srihosour, Srinath; Hocevar , Dale; Huang, Everest (2001-09-20)
    We develop a new construction criterion for BSPK space-time codes which simultaneously reflects both "coding" and "diversity" advantage. Furthermore, we propose a new method of improving the performance of space-time ...
  • Finite Rate Feedback Design for Multiple Transmit Antennas 

    Mukkavilli, Krishna Kiran; Sabharwal, Ashutosh; Aazhang, Behnaam (2002-10-20)
    Many practical systems employ a feedback channel to convey the channel state information to the transmitter.The capacity of the feedback channels is usually limited to a few bits per frame. We design feedback based ...
  • Information Theoretic Optimality of Orthogonal Space-Time Codes and Concatenated Code Construction 

    Muharemovic, Tarik; Aazhang, Behnaam (2000-06-20)
    We demonstrate that the information theoretic capacity of multiple-transmit antenna systems is not reduced by using space-time orthogonal transmit schemes as means of exploiting the transmit diversity. Then, we consider ...
  • On Outage and Capacity for Orthogonal Transmit Diversity 

    Muharemovic, Tarik; Aazhang, Behnaam (2001-09-20)
    Assuming that only the receiver has perfect channel state information, we analyze the orthogonal transmit diversity (OTD). First, we consider the case of fast fading or <i>ergodic</i> channels. We demonstrate that for a ...
  • Space-Time Codes with Bit Interleaving 

    Muharemovic, Tarik; Gatherer, Alan; Ebel, Will; Srihosour, Srinath; Hocevar , Dale; Huang, Everest (2001-11-20)
    We develop a new construction criterioin for BSPK space-time codes. Based on this criterion, we propose a new method of improving the performance of space-time codes, namely bit interleaving. Then, we provide a computationally ...
  • Transmit Diversity with Channel Feedback 

    Mukkavilli, Krishna Kiran; Sabharwal, Ashutosh; Orchard, Michael; Aazhang, Behnaam (2001-09-20)
    Transmit diversity in the presence of channel feedback at the transmitter is analyzed in this paper. We first consider perfect channel feedback and summarize the beamforming solution which minimizes the codeword error ...