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In this paper, the problem of NFC/RFID technology frontend performance verification is addressed. To make this technology succeeded, it is necessary to test conformance, acceptance, compliance, consistency and interoperability of NFC/contactless infrastructure. Industry bodies such as EMVCo is developing and maintaining programs to ensure device conformance, acceptance, compliance, consistency, and...
This paper investigates a 2-bit binary representation of the reliability messages generated by the Variable Node (VN) processor of Non-Binary Low Density Parity Check (NB-LDPC) Decoder. The NB-LDPC family of error correcting codes, considered as a potential alternative to both binary LDPC and convolutional Turbo Codes, suffers from high computational complexity as well as large memory requirements...
In this paper, we investigate the decoding of short Non-Binary (NB)-LDPC codes of rate 1/2 using a non-iterative approach based on the Maximum-Likelihood (ML) principle. The traditional decoding algorithms used to decode the NB-LDPC codes are by nature iterative where the Variables Nodes (VN) and Check Nodes (CN) exchange data iteratively during, at least, eight iterations which imposes a long decoding...
Non-Binary Low Density Parity Check Codes (NB-LDPC) are nowadays considered as a potential competitor of both binary LDPC and convolutional Turbo Codes, mainly when codes with short and moderate codeword lengths are used. The decoding process of these codes suffers from a high computational complexity which necessitates a high memory requirements to store the intrinsic and extrinsic Likelihood Ratio...
This paper investigates the decoding of rate 1/2 Non-Binary LDPC codes using a non-iterative approach based on the Maximum-Likelihood (ML) principle. The iterative decoding approach based on the well known Extended-Min-Sum (EMS) algorithm, considered as the most efficient decoding algorithm to decode NB-LDPC codes, executes the decoding process iteratively. The main operations of this algorithm are...
Non-Binary LDPC codes are nowadays considered as a potential competitor of both binary LDPC and convolutional Turbo Codes, mainly when codes with short and moderate codeword lengths are used. The decoding process of these codes suffers from a high computational complexity which necessitates a high memory requirements to store the intrinsic and extrinsic Likelihood Ratio (LLR) messages. This paper...
This paper investigates the decoding of rate 1/2 Non-Binary LDPC codes using a non-iterative approach based on the Maximum-Likelihood (ML) principle. The iterative decoding approach based on the well known Extended-Min-Sum (EMS) algorithm, considered as the most efficient decoding algorithm to decode NB-LDPC codes, executes the decoding process iteratively. The main operations of this algorithm are...
Non-Binary LDPC codes are nowadays considered as a potential competitor of both binary LDPC and convolutional Turbo Codes, mainly when codes with short and moderate codeword lengths are used. However, the Non-Binary nature of these codes makes their decoding process suffers from high computational complexity. This paper deals with the reduction of this computational complexity at the Check Node level...
In this paper, we propose a new algorithm for orthogonal frequency-division-multiplexing (OFDM) systems. The algorithm is based on particle fitering (PF) for joint carrier recovery and channel estimation in slow Rayleigh fading channel. The algorithm has been designed to work with both the parametric L-path channel model (with known path delays) and the equivalent discrete-time channel model. PF is...
A scenario to design a Triple Mode FFT is addressed. Based on a Dual Mode FFT structure, we present a methodology to reach a triple mode FFT operator (TMFFT) able to operate over three different fields: complex number domain ℂ, Galois Fields GF(Ft) and GF(2m). We propose a reconfigurable Triple mode Multiplier that constitutes the core of the Butterfly-based FFT. A scalable and flexible unit for the...
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