Browsing by Keywords "Block codes"

Now showing items 1-7 of 7

    • Guessing subject to distortion 

      Arikan, E.; Merhav, N. (Institute of Electrical and Electronics Engineers, 1998-05)
      We investigate the problem of guessing a random vector X within distortion level D. Our aim is to characterize the best attainable performance in the sense of minimizing, in some probabilistic sense, the number of required ...

    • Improved DST cryptanalysis of IDEA 

      Ayaz, Eyüp Serdar; Selçuk, Ali Aydın (Springer, 2006-08)
      In this paper, we show how the Demirci-Selcuk-Ture attack, which is currently the deepest penetrating attack on the IDEA block cipher, can be improved significantly in performance. The improvements presented reduce the ...

    • A low-complexity time-domain MMSE channel estimator for space-time/frequency block-coded OFDM systems 

      Şenol, H.; Çırpan, H. A.; Panayırcı, E.; Çevik, M. (Hindawi Publishing Corporation, 2006)
      Focusing on transmit diversity orthogonal frequency-division multiplexing (OFDM) transmission through frequency-selective channels, this paper pursues a channel estimation approach in time domain for both space-frequency ...

    • Lower bounds to moments of list size 

      Arıkan, Erdal (IEEE, 1990)
      Summary form only given. The list-size random variable L for a block code is defined as the number of incorrect messages that appear to a maximum-likelihood decoder to be at least as likely as the true message. Lower bounds ...

    • Multiresolution block coding method for visualization of compressed images in multimedia applications 

      Gerek, O. N.; Cetin, E. A. (Society of Photo-Optical Instrumentation Engineers, 1994)
      Multimedia and Picture Archiving and Communication System (PACS) applications require efficient ways of handling images for communication and visualization. In many Visual Information and Management Systems (VIMS), it may ...

    • On probability of success in linear and differential cryptanalysis 

      Selçuk, A. A. (Springer New York LLC, 2008-01)
      Despite their widespread usage in block cipher security, linear and differential cryptanalysis still lack a robust treatment of their success probability, and the success chances of these attacks have commonly been estimated ...

    • Turbo/katlamalı kodlanmış SFBC/STBC-OFDM sistemlerinde yinelemeli kanal kestirimi 

      Doǧan, H.; Çırpan, H. A.; Panayırcı, Erdal (2006-04)
      We consider the design of turbo receiver structures for space-frequency block coded (SFBC/STBC) OFDM systems in unknown frequency selective fading channels. The Turbo receiver structures for SFBC/STBC-OFDM systems under ...