In this paper, Reed Solomon (RS) decoder adopting the pipelined reduced inversion free Berlekamp Massey (pRiBM) algorithm is proposed. This Reed Solomon decoder is designed by equipping the Syndrome Computation unit, Key Equation Solver (KES), Chien search and Forney algorithm unit. The RS decoder requires long latency for decoding large number of test vectors. Therefore, the Reed Solomon decod...

In this paper we talk about mixed architectures of a H.264/AVC video decoder. Here software part of decoder was implemented in NIOS II processor on a FPGA prototyping board (Stratix III). Software and hardware architectures was proposed to increase the decoder output performance. Based upon the time execution parameters, data dependency constraints, the decoder partitioning is applied. Here the...

The development of accurate machine translation systems requires detailed analyses of the recurring translation mistakes. However, the manual inspection of the decoder log files is a daunting task because of their sheer size and their uncomfortable format, in which the relevant data is widely spread. For all major platforms, DIMwid offers a graphical user interface that allows the quick inspect...

This paper proposes an optimal maximum a posteriori probability decoder for variable-length encoded sources over binary symmetric channels that uses a novel state-space to deal with the problem of variable-length source codes in the decoder. This sequential, finite-delay, joint source-channel decoder delivers substantial improvements over the conventional decoder and also over a system that use...

In this paper, we propose the optimized real-time MPEG-2 video decoder. The decoder has been implemented in one FPGA device as a HW/SW partitioned system. We made timing/power-consumption analysis and optimization of the MPEG-2 decoder. On the basis of the achieved results, we decided for hardware implementation of the IDCT and VLD algorithms. Remaining parts were realized in software with 32-b...

A versatile Reed-Solomon (RS) decoder structure is developed based on the time-domain decoding algorithm (transform decoding without transforms). In this paper, the algorithm is restructured and a method is given to decode any RS code generated by any generator polynomial. The main advantage of the introduced decoder structure is the versatility. By versatile decoder we mean a decoder that can ...

A common method for stopping error propagation in encoded video is to transmit intracoded blocks whenever errors occur, but this results in significantly increased bitrate. Error propagation can also be stopped by synchronizing the state of the encoder to that of the decoder. For example, one may emulate and repeat the entire decoding – including the channel errors – inside the encoder. This ap...

Variable length code (VLC) is used in a large variety of lossless compression applications. Golomb-Rice code (GR code) is one type of VLC that is often encountered in the coding of video and image data. In this work we develop an efficient decoder for GR codes. Unlike the conventional variable length decoders, this new type of decoder needs neither codeword tables nor barrel shifters, while the...

|We propose the new Group Metric (GM) decoder for convolutionally coded synchronous multiple-access channels. The GM decoder makes decoding decisions for one user, but incorporates multiuser information in its metrics. This decoder will have a reduced complexity which is exponential in the sum of encoder memory and the number of users. The soft-decision maximum-likelihood (ML) joint decoder can...

This paper presents a novel low-cost high-performance CAVLC decoder for H.264/AVC. The proposed CAVLC decoder generates the length of coeff token and total zeros symbols with simple arithmetic operation. So, it can be implemented with reduced look-up table. And we propose multi-symbol run before decoder which has enhanced throughput. It can decode more than 2.5 symbols in a cycle if there are r...