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Showing 1 to 8 of 8 for “"convolutional code"”.

  1. Artificial neural network decoding of multi-h CPM

    Kannemeyer, Johan EtienneDepartment of Electrical Engineering1997

    … alternative to other FEC techniques such as convolutional coding, while neural networks allow for high speed decoding. A neural network decoder was found in [12], where it had been used for the decoding of a convolutional code. This neural network structure by Xiao-an Wang and Stephen 'B. …

    cape-town Repository record

  2. Error-correction on non-standard communication channels

    Ratzer, Edward AlexanderUniversity of Cambridge2004

    … In this thesis, low-density parity-check codes and codes related to them are applied to non-standard channels. First, we look at time-varying noise modelled by a Markov channel. A low-density parity-check code decoder is modified to give an improvement of over 1dB. Secondly, novel codes …

    cambridge Repository record

  3. Harvesting time-frequency-space diversity with coded modulation for underwater acoustic communications

    Pelekanakis, KonstantinosMassachusetts Institute of Technology2009

    … channels have time-varying statistics, thus a coded modulation scheme optimally designed for a specific channel model will be suboptimal when the channel statistics change. A robust approach should use a coded modulation scheme that provides good performance in both additive white Gaussian …

    mit Repository record

  4. Implementation of Parallel and Serial Concatenated Convolutional Codes

    Wu, YufeiVirginia Tech2000

    Parallel concatenated convolutional codes (PCCCs), called "turbo codes" by their discoverers, have been shown to perform close to the Shannon bound at bit error rates (BERs) between 1e-4 and 1e-6. Serial concatenated convolutional codes (SCCCs), which perform better than PCCCs at BERs lower than …

    vt Repository record

  5. Near-capacity MIMOs using iterative detection

    El-Hajjar, Mohammed H.University of Southampton2008

    … invokes iterative detection, where the outer code is constituted by a Recursive Systematic Convolutional (RSC) code, while the inner code is a SP demapper in one of the prototype systems investigated, while the other scheme employs a Unity Rate Code (URC) as its inner code in order to …

    soton Repository record

  6. New Analytical Bounds on the Probability of Code-Word Error for Convolution Codes with Viterbi Decoding

    Tomar, Shweta

    clemson Repository record

  7. Multi-dimensional direct-sequence spread spectrum multiple-access communication with adaptive channel coding

    University of Pretoria2007

    … betterMultiple Access (MA) techniques, like Code Division Multiple Access (CDMA) [5]. The demand for higher throughput and better QoS in future 4G systems have also given rise to a scheme that is becoming ever more popular for use in these so-called ‘bandwidth-on-demand’ systems. This scheme …

    pretoria Repository record

  8. Machine-Type Communications: Coding, Multiple Access and Synchronization

    SCHIAVONE, RICCARDOPolitecnico di Torino2025

    L'abstract è presente nell'allegato / the abstract is in the attachment

    poli-torino Repository record