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In light of the recent development of multimedia and networking technologies, an exponentially increasing amount of content is available via various public services. That is why content identification attracts a lot of attention. One possible technology for content identification is based on digital fingerprinting. When trying to establish information-theoretic limits in this application, usually...
In this paper, we assess the random coding error exponents (EEs) corresponding to decode-and-forward (DF), compress-and-forward (CF) and quantize-and-forward (QF) relaying strategies for a parallel relay network (PRN), consisting of a single source and two relays. Moreover, through numerical analysis we show that the EEs achieved by using QF relaying along with non-Gaussian signaling (coded modulation,...
Wyner's work on wiretap channels and the recent works on information theoretic security are based on random codes. Achieving information theoretical security with practical coding schemes is of definite interest. In this note, the attempt is to overcome this elusive task by employing the polar coding technique of Arikan. It is shown that polar codes achieve nontrivial perfect secrecy rates for binary-input...
We propose two practical schemes for the cancellation of nonlinear distortions caused by the power amplifiers (PA) in Orthogonal Frequency Division Multiplexing (OFDM) systems. The algorithms are iterative and located at the receiver. They utilize a soft channel decoder to improve the capabilities of the distortion estimation and relay all the computational complexity to the receiver. Simulation results...
Carrier screens are widely used in medical genetics to prevent rare genetic disorders. Current detection methods are based on serial processing which is slow and expensive. Here, we discuss a highly efficient compressed sensing approach for ultra-high throughput carrier screens, and highlight both similarities and unique features of our setting compared to the standard compressed sensing framework...
This paper presents a soft reliability-based binary message-passing algorithm for decoding LDPC codes. This algorithm outperforms the existing weighted bit-flipping algorithms with much less computational complexity. It is particularly effective for decoding LDPC codes constructed based on finite-geometries and finite fields. The proposed algorithm can be simplified for applications in communication...
This paper presents an FPGA-based implementation of a tri-mode decoder for decoding the cyclic (4095,3367) Euclidean geometry LDPC code which has minimum distance 65 and no trapping set of size less than 65. The implementation integrates three compatible decoding algorithms in a single decoder. The three decoding algorithms are the one-step majority-logic decoding (OS-MLGD) algorithm and two iterative...
Given the possibility of communication systems failing catastrophically, we investigate limits to communicating over channels that fail at random times. These channels are finite-state semi-Markov channels. We show that communication with arbitrarily small probability of error is not possible. Making use of results in finite block-length channel coding, we determine sequences of block-lengths that...
We present comparative reliability analysis between shared-bus AMBA and network-on-chip (NoC) in the presence of single-event upsets (SEUs) using MPEG-2 video decoder as a case study. Employing SystemC-based cycle-accurate fault simulations, we investigate how the decoder reliability is affected when SEUs are injected into the computation cores and communication interconnects of the decoder. We show...
We consider wireless broadcasting of multimedia content to allow asynchronous media access. Receivers subscribe at any time to the ongoing broadcast session, but are still able to display the media stream from the beginning. A fully scalable broadcasting scheme is presented where the media stream is appropriately segmented and segments are protected by fountain codes. The decoding behavior of rateless...
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