Now showing items 1-5 of 5

  • Computationally Efficient Iterative Multiuser Detection and Decoding 

    Das, Suman; Erkip, Elza; Aazhang, Behnaam (1998-11-20)
    We describe an iterative detection and decoding scheme for the uplink in a convolutionally coded direct sequence code division multiple access (DS-CDMA) system. We consider maximum-a-posteriori (MAP) decoding and reduce ...
  • Experimental demonstration of bipolar codes for direct detection multi-user optical communication 

    Dennis, Tasshi; Nguyen, Lim; Aazhang, Behnaam; Young, James F. (1996-10-20)
    We report the first experimental demonstration of a broadband spectral encoding and decoding technique using bipolar codes for optical code-division multiple access. The codeword correlations are verified and rejection of ...
  • Iterative Multiuser Detection and Decoding 

    Das, Suman; Erkip, Elza; Cavallaro, Joseph R.; Aazhang, Behnaam (1998-11-20)
    An iterative detection and decoding algorithm is explored for a convolutionally coded DS-CDMA system. The optimum decoding strategy is to consider the trellises of all the users simultaneously, but this has exponential ...
  • Joint Source Channel Coding for Discrete Memoryless Channels 

    Bharadwaj, Vinay (2000-05-20)
    The design of optimal joint source/channel coding and decoding is examined for dis­ crete memoryless channels with end­to­end distortion as the criterion for reliable com­ munication. Joint source/channel encoders ...
  • Maximum Weight Basis Decoding of Convolutional Codes 

    Das, Suman; Erkip, Elza; Cavallaro, Joseph R.; Aazhang, Behnaam (2000-06-20)
    The effectiveness of the convolutional code increases with the constraint length of the code. Unfortunately the decoding complexity of Viterbi algorithm grows exponentially with the constraint length. In this paper we ...