This paper presents Cyclic code Encoder and Decoder with its soft core design as well hardware implementation on FPGA. The design includes both encoder and decoder part that can be used in a communication system for encoding a message at the transmitter and decoding it, detecting error and correcting it on the receiver part. The source code for Encoder and Decoder has been formulated in VHDL ( ...

This paper presents high-performance encoder and decoder architectures for a class of Low Density Parity Check (LDPC) codes. The codes considered here are based on the Parallelly Concatenated Parity Check encoder structure. A major advantage of these codes is that the generator matrix and the parity check matrix are both sparse, which leads to efficient VLSI implementations for the encoder and ...

Presented here is MPEG-2 AAC LC Profile encoder software for an Intel Pentium III processor. MDCT and quantization processing are accelerated by the use of SIMD instructions. Psycho-acoustic analysis in the MDCT domain makes the use of FFTs unnecessary. Better sound quality is provided by greater efficiency in quantization processing and Huffman coding. All of this results in high-quality and p...

In this paper, we present our study of a new approach for streaming multimedia applications over a high-speed network. This work is based on our project of streaming the three channels of SCOLA TV signals over Internet2. As a replacement for the Microsoft Windows Media Encoder we have designed and developed a new approach that allows us to control the network transmission behavior for more effe...

Simpler networks of encoding and decoding are necessary for more reliable quantum error correcting codes (QECCs). The simplification of the encoder-decoder circuit for a perfect five-qubit QECC can be derived analytically if the QECC is converted from its equivalent one-way entanglement purification protocol (1-EPP). In this work, the analytical method to simplify the encoder-decoder circuit is...

H.264/AVC is a joint project of ITU and MPEG. It provides high quality compression for various services like IP streaming media, SDTV and HDTV broadcast and video on demand etc. Motion estimation, input buffer, summation unit and reference frame section form complex design of H.264/AVC encoder. It is the most advanced video standard. In this paper,H.264/AVC encoder is designed in verilog with b...

This paper presents performance of two level turbo coded 4-ary continuous phase frequency shift keying. In this system,, to provide phase continuity of the transmitted signals, turbo encoder and continuous phase encoder (CPE) are serially concatenated at the second level, while first level consist of only a turbo encoder. Simulation results are drawn for proposed system over AWGN, Rician and Ra...

We propose a general Convolutional Neural Network (CNN) encoder model for machine translation that fits within in the framework of Encoder-Decoder models proposed by Cho, et. al. [1]. A CNN takes as input a sentence in the source language, performs multiple convolution and pooling operations, and uses a fully connected layer to produce a fixed-length encoding of the sentence as input to a Recur...

This paper develops a differential encoder for differentially demodulated continuous phase frequency shift keying (CPFSK). CPFSK schemes with modulation index , where and are relatively prime positive integers, can be represented by a decomposed model consisting of a continuous phase encoder (CPE) and a memoryless modulator (MM). The differential encoder is shown to fit well with the CPE and fo...

This paper is concerned with the stochastic control formulation of the capacity of channel with memory and feedback. The pay-off is the directed information from the source sequence to the channel output sequence, while the objective is to find the optimal encoder which maximizes this quantity. By invoking a change of measure technique this problem is reformulated in terms of controlling the a ...