نتایج جستجو برای: active high decoder
تعداد نتایج: 2416736 فیلتر نتایج به سال:
Reed–Solomon (RS) codes are widely used to identify and correct errors in transmission and storage systems. When RS codes are used for high reliable systems, the designer should also take into account the occurrence of faults in the encoder and decoder subsystems. In this paper, self-checking RS encoder and decoder architectures are presented. The RS encoder architecture exploits some propertie...
Each evolution of wireless communication system demands ever increasing growth in the rate of data transmission with no sign of pause. The demand of higher data-rate, exhibited by increasing users of mobile wireless services, has been on an exponential trajectory. To meet such requirement of data-rate, wireless industry has already specified to further augment data rates up to 3 Gbps milestone ...
This paper presents finite-blocklength achievability bounds for the Gaussian multiple access channel (MAC) and random (RAC) under average-error maximal-power constraints. Using codewords uniformly distributed on a sphere maximum likelihood decoder, derived MAC bound each transmitter's rate matches MolavianJazi-Laneman (2015) in its first- second-order terms, improving remaining terms to $\frac1...
In this paper, we discuss the influence of imperfect Wiener channel estimation on performance and dynamics of a turbo decoder using the non-linear soft data feedback. We show that the correlation between the channel estimates and soft bits produced in subsequent iterations can lock the turbo decoder in a wrong minimum and create a high error floor. This problem can be circumvented by a differen...
Porto, the institutional repository of the Politecnico di Torino, is provided by the University Library and the IT-Services. The aim is to enable open access to all the world. Please share with us how this access benefits you. Your story matters. A VLSI encoder and decoder implementation for the IEEE 802.16 WiMax convolutional turbo code is presented. Architectural choices employed to achieve h...
Viterbi decoders employed in digital wireless communications are complex and dissipate large amount of power. In this paper, we investigate power dissipation of Radix-4 Viterbi decoder and SST (Scarce State Transition) Radix-4 Viterbi decoder with changing the constraint length K (namely, K=3, 4). We presents a low power, high-rate Viterbi decoder using SST scheme and Radix-4 trellis. The SST m...
− Dual antenna-array systems provide very high capacity compared to single antenna systems in a Rayleigh fading environment. If the transmitter does not have channel state information, to utilize this high capacity, space-time codes must be employed. The diagonally layered space-time (DLST) architecture is a structure that is capable of providing a high data rate for a low decoding complexity. ...
Many machine vision applications require predictions for every pixel of the input image (for example semantic segmentation, boundary detection). Models for such problems usually consist of encoders which decreases spatial resolution while learning a high-dimensional representation, followed by decoders who recover the original input resolution and result in low-dimensional predictions. While en...
The Bose, Chaudhuri and Hocquenghem (BCH) codes form a large class of powerful random-error correcting cyclic codes. However, the implementation of its decoder requires high-complexity computation resources with a huge number of sequential circuits. This paper presents a low-complexity register transfer level (RTL) circuit design of a BCH decoder. In accordance with the table relationship betwe...
Turbo coding has become an attractive scheme for design of current communication systems, providing near optimal bit error rates for data transmission at low signal to noise ratios. However, it is as yet unsuitable for use in high data rate mobile systems owing to the high energy consumption of the decoder scheme. Due to the data dominated nature of the decoder, a memory organization providing ...
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