4 edition of A multiprocessor architecture for Viterbi decoders with linear speed-up found in the catalog.
A multiprocessor architecture for Viterbi decoders with linear speed-up
by National Library of Canada = Bibliothèque nationale du Canada in Ottawa
Written in English
|Series||Canadian theses = Thèses canadiennes|
|The Physical Object|
|Pagination||2 microfiches : negative.|
Recently, his research activities target multiprocessor and network-on-chip architecture design for digital communication applications. Dr. Baghdadi has been nominated for Best Paper Award at the DATE conference for his work on the design automation of application-specific multiprocessor :// This thesis presents a fully self-testable integrated circuit (IC) variable-rate Viterbi decoder of constraint length K = 5. The chip is designed to decode convolutional codes ranging from rate 7/8 to 1/4, derived from the same rate 1/2 mother code. The architecture of the Viterbi decoder is bit-serial node-parallel. The incoming 8-level quantized channel bits are input in parallel and
Accelerator—bit unit for trellis decoding (for example, Viterbi and turbo decoders) and complex correlations for communication applications. Using these features, the compute blocks can:? Provide 8 MACs per cycle peak and MACs per cycle sustained bit performance and provide 2 MACs per cycle peak and MACs per cycle sustained bit a KEY FEATURES Up to MHz, ns instruction cycle rate 24M bits of internal—on-chip—DRAM memory 25 mm × 25 mm (ball) thermally enhanced ball grid array package Dual-computation blocks—each containing an
Moving forward, however, this has to radically change: we need to rethink computer architecture from the ground-up for security. As an example of this vision, in this talk, I will focus on speculative execution in out-of-order processors a core computer architecture technology that is the target of the recent ://?date=03/04/&event_type=2. A novel architecture based on root-order prediction is proposed to speed up this step. As a result, the exhaustive-search-based root computation from the second iteration of the factorization step is circumvented with more than 99% ://
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A Multiprocessor Architecture for Viterbi Decoders with Linear Speedup Article (PDF Available) in IEEE Transactions on Signal Processing 41(9) - October with 27 Reads A Multiprocessor Architecture for Viterbi Decoders with Linear Speed-up.
Master's thesis, University of Toronto, Department of Electrical Engineering, Toronto, Ontario, M5S 3G4, Co-supervised with Glenn Gulak. 2 Gennady Feygin, Patrick Glenn Gulak, and Paul ~pc/research/misc.
Generalized cascade Viterbi decoder-a locally connected multiprocessor with linear speed-up May Acoustics, Speech, and Signal Processing, The Effect of Logic Block Architecture on the Speed of Field-Programmable Gate Arrays (with Prof. Rose) [86,87,88,89,67] Lattice Semiconductor Corp., San Jose, CA: Gennady Feygin: A Multiprocessor Architecture for Viterbi Decoders with Linear Speed-up (with Prof.
Gulak) [90,67,91,53] Texas ~pc/gradstudents/ This paper presents a novel super-pipelined VLSI architecture for Viterbi decoders. This architecture is capable of achieving high throughput in an Speed Up MATLAB with Multicore Computers.
Use parallel for loops (parfor) to run independent iterations in parallel on multicore CPUs, for problems such as parameter sweeps, optimizations, and Monte Carlo simulations. parfor automates the creation of parallel pools and manages file dependencies, so that you can focus on your functions in several HIGH-SPEED LOW-POWER VITERBI DECODER DESIGN for TCM DECODER - authorSTREAM Reed-Solomon algebraic decoding procedures can correct errors and erasures.
An erasure occurs when the position of an erred symbol is known. A decoder can correct up to t errors or up to 2t erasures. Erasure information can often be supplied by the demodulator in a digital communication system, i.e.
the demodulator "flags" received symbols that ~guyb/realworld/reedsolomon/ This work studies the turbo decoding of Reed-Solomon codes in QAM modulation schemes for additive white Gaussian noise channels (AWGN) by using a geometric ://?q=Turbo+decoding.
Hard decision is based on Gallager algorithm. edu Abstract — Low-Density Parity-Check (LDPC) codes are. LDPC codes are one of the hottest topics in coding theory today. d) david leyba (ph. Already supports codeword lengths greater than “Architecture Aware” constructions (Layered-BP (belief propagation) :// Systolic array architecture for convolutional decoding algorithms: Viterbi algorithm and stack algorithm Digital decoders can use the same hard-ware to decode diﬁerent LDPC codes by re-programming the chip.
On Circuits and SystemsI: Regular Papers, vol. Ryan University of Arizona fyhan,[email protected] a decoder but also in quickly retargeting the implementation to a different (perhaps new) FPGA or a different emulation board.
lel message-passing decoding FPGAs are ideal candidates for this purpose because of their speed and flexibility. Although there have been plenty of publications on the hardware implementation of Viterbi , , , [ Modern digital communication systems usually employ convolutional codes with large constraint length for good decoding performance, which leads to ?id= programming (LP) decoding are studied and compared theoretically for the decoding of LDPC (Low Density Parity Check) codes.
object uses the belief propagation algorithm to decode a binary LDPC code, which is input to the object as the soft-decision output (log-likelihood ratio of received bits) from In the KV algorithm, the factorization step can consume a major part of the decoding latency.
A novel architecture based on root-order prediction is proposed to speed up this step. As a result, the exhaustive-search-based root computation from the second iteration of the factorization step is circumvented with more than 99% Runtime adaptivity of hardware in processor architectures is a novel trend, which is under investigation in a variety of research labs all over the world.
The runtime exchange of modules, implemented on a reconfigurable hardware, affects the instruction flow (e.g., in reconfigurable instruction set processors) or the data flow, which has a strong impact on the performance of Viterbi, A.
An intuitive justification and a simplified implementation of the MAP decoder for convolutional codes. IEEE Journal on Selected Areas in Communications, 16, Google Scholar Digital Library; Wang, Z., Chi, Z., & Parhi, K. Area-efficient high-speed decoding schemes for turbo :// Mthough the design of Viterbi decoders for digital sequences of infinite duration has been thoroughly investigated in the past (see , Chapter 7 for a compilation), little information on the effect of finite data sequences or the impact of finite word lengths on signal processing in Viterbi equalizers has been published so far [8, 9].
Because most of the receiver architecture is of the feedforward type it is no problem to insert more pipeline stages in order to speed up the possible system clock (Fig. 13). Furthermore, we are able to parallelize the system to an arbitrary extent by making a replica of system “S” several times as shown in Fig.
› 百度文库 › 高校与高等教育. Look-ahead, referred to as recursive doubling, has also been used to obtain parallel implementation of linear recurrence systems .
This chapter presents numerous approaches for high-speed architecture design of Huffman decoders  . These decoders are used in high-definition television (HDTV) video and other data compression It proposes a design exploration methodology at the intersection of architecture, engineering, and construction.
The motivation of the work includes exploring bottom up generative methods coupled with optimizing performance criteria including geometric complexity and objective functions for environmental, structural and fabrication ://?month&date=03/04/&.Bus is a group of conducting wires which carries information, all the peripherals are connected to microprocessor through Bus.
Diagram to represent bus organization system of ://