Differential Analog Viterbi Decoding (DAVD) for Forward-Error-Correction (FEC) is used in channel coding for digital communications. The use of analog circuits to reduce the size and power consumption of channel decoders such as Viterbi decoders has been an active area of research over the recent years. In this paper, differential analog Viterbi decoder architecture is proposed and implemented ...

––Satellite image compression is one of active image processing areas. In this paper we proposed a novel approach for ROI compression of multiband satellite images using modified JPEG standard. In this paper, we show how the quantization may be adapted in each block and how we may signal to the decoder in a memory-efficient manner. This allows ROI coding of satellite images. The method takes ad...

This paper presents a flexible and high-efficiency decoder for turbo product code using extended Hamming code. The supported component code ranges from (8, 4) to (128, 120) to provide enough flexibility for various communication standards. A novel Chase decoder architecture is developed with high efficiency using a low complexity algorithm. Moreover, a conflict free interleave memory access mod...

We describe the development of a hardware turbo decoder on a field-programmable gate array for high-speed free-space laser communications. This system will be used by NASA’s Mars Laser Communications Demonstration project on the Mars Telecommunication Orbiter, the first use of high-speed laser communication from deep space. The error-correction code design has been shown to perform within 0.9 d...

Active listening consists in interacting with the music playing, has numerous applications from pedagogy to gaming, and involves advanced remixing processes such as generalized karaoke or respatialization. To get this new freedom, one might use the individual tracks that compose the mix. While multi-track formats loose backward compatibility with popular stereo formats and increase the file siz...

In contrast to a maximum-likelihood decoder, it is often desirable to use an incomplete decoder that can detect its decoding errors with high probability. One common choice is the bounded distance decoder. Bounds are derived for the total word error rate, Pw, and the undetected error rate, Pu. Excellent agreement is found with simulation results for a small code, and the bounds are shown to be ...

This paper introduces a new class of Huffman decoders which is a developmet of the parallel Huffman decoder model. With pipelining and partitioning, a regular architecture with an arbitrary degree of pipelining is developed. The proposed architecture dramatically reduces the symbol decoder requirements compared to previous results, and still is the actual implementation of the symbol decoder no...

A kind of (1008, 3, 6) rules LDPC decoder was designed in this paper, in order to solving the high complexity of LDPC decoder hardware implementation, which adopted Min-Sum decoding algorithm and partparallel structure. The minimum module in the traditional check function unit (CFU) was improved, which could reduce the complexity of the hardware realization. In the end, the LDPC decoder achieve...