4architecture for fpga based sdr

... hardware performance, faster FPGA platforms are continually being developed These platforms are often quite different than the current generation Logic Foundry: Rapid Prototyping for FPGA- Based DSP ... application program to be substantially rewritten for a new FPGA platform It is also desirable to be able to make use of the same FPGA acceleration platform from different software environments such ... signal to baseband and often implemented in FPGA s [18] We would like to move the TFD functionality to an FPGA platform for processing acceleration Inside the FPGA, the TFD block will be made up of...

Ngày tải lên: 23/06/2014, 01:20

... tạo tín hiệu đồng đưa vào FPGA Dòng tải pha lấy từ cảm biến Hall qua so sánh đưa vào FPGA để xử lý chuyển mạch bước Đầu nguồn, mạch LC có tác dụng lọc sóng hài trả nguồn FPGA thực giải thuật điều ... converter Đồng thời thể ưu điểm matrix converter thông qua trình mô Matlab/Simulink thực nghiệm Card FPGA Spartan 3E, kết mô thực nghiệm với tải RL trình Với kết đạt báo làm tản cho tiếp cận phát triển ... vector control of matrix converters with unity input power factor and sinusoidal input/ouput waveforms” 1993 European Power Electronics Association [4] Lászó Huber and Dusan Borojevic, “Space vector...

Ngày tải lên: 14/05/2014, 22:37

... used in FPGA for design of PWM Generator is minimum in case of Counter based PWM Generator and maximum in case of High frequency Counter based PWM generator Device (FPGA) utilization is best for ... PWM Generator architecture in FPGA [30] Chapter Design Procedure on FPGA [31] Chapter Design Procedure on FPGA 5.1 FPGA basics The Field Programmable Gate Array (FPGA) ,as the name suggest, is ... Fig.28 Fig 24 For K=‟1100‟ or duty cycle= 75% [43] Fig 25 For K=‟1000‟ or duty cycle =50% Fig.26 For K=‟1100‟ or duty cycle =75% [44] Fig.27 For K=‟1111‟ or duty cycle =93.75% Fig.28 For K=‟0010‟...

Ngày tải lên: 14/05/2014, 22:37

... analyzer (dynamic power was estimated for default toggle rates of 12.5%) FPGA- BASED WIRELESS COMMUNICATIONS RECEIVERS For the system shown in Figure 1, we focus on FPGA- based receiver algorithm implementation, ... (i.k.c.) for SINC PSAM We verified that BER expressions derived in [1] and the corresponding MATLAB simulation results agree closely for p.k.c as well as for i.k.c Then, for i.k.c., FPGA- based designs ... As we will see, an FPGA- based MREC receiver can provide, for a channel with slowly varying statistics, flexibility that yields affordable performance The main benefit of an FPGA- based BVTC adaptive...

Ngày tải lên: 22/06/2014, 22:20

... signal [4], [17] Figure 2.1: Structure of an FPGA 15 There are two basic categories of FPGAs on the market today: SRAM -based FPGAs and anti-fuse based FPGAs In the first category, Xilinx and Altera ... implementation of the hardware platform for the FPGA- based optical network transport with the Gigabit Ethernet interface This system is designed as an open research platform, with a range of configuration ... data rate (DDR) SDRAM and DDR2 SDRAM, RLDRAM II, quad data rate (QDR) II SRAM, and single data rate (SDR) SDRAM Stratix II devices support various I/O standards along with support for 1gigabit per...

Ngày tải lên: 22/11/2015, 23:35

... 2.2 Cuckoo Hashing 22 Processor Array -Based Architectures for Pattern Matching 24 3.1 Processor Array -Based Architecture for pattern maching in NIDS 24 3.1.1 Compact encoding ... Comparison of Processor Array -based Architecture and previous FPGA- based pattern matching architectures .39 Table 4.1 Summary of main notations used in the performance analysis 55 ... the FPGA- based systems 66 Table 4.3 Dynamic Update Comparison for A Pattern 72 Table 4.4 Logic and Memory Cost of PAMELA in Xilinx Virtex-4 73 Table 4.5 Performance...

Ngày tải lên: 22/06/2016, 12:58

... Design Recipes for FPGAs This page intentionally left blank Design Recipes for FPGAs Dr Peter R Wilson AMSTERDAM • BOSTON • HEIDELBERG • LONDON • NEW YORK • OXFORD PARIS • SAN DIEGO • ... Introduction Why FPGAS? 3 Chapter An FPGA Primer Introduction FPGA evolution Programmable logic devices Field programmable gate arrays FPGA design techniques 10 Design constraints using FPGAs 10 Summary ... then select a suitable platform based on those considerations For example, if the design requires a basic clock speed of up to 100 MHz then an FPGA would be a suitable platform If the clock speed...

Ngày tải lên: 16/08/2012, 09:59

... bandwidth constraints on dht -based multicast protocols Proc 4th Int'l Workshop on Peer-to-Peer Systems Chao Liang, Yong Liu, K W R (2009) Topology optimization in multi-tree based p2p streaming system ... distribution algorithm for peer-to-peer real-time streaming Parallel and Distributed Systems, IEEE Transactions on, Vol PP, No 99 Huang, K., & Zhang, D (March, 2010) Dht -based lightweight broadcast ... Bayeux:anarchitecture for scalable and fault-tolerant wide-area data dissemination In ACM NOSSDAV Stoica, R Morris, D K., Kaashoek, M., & Balakrisnan, H (2001) Chord: A scalable peer-to-peer lookup service for...

Ngày tải lên: 26/11/2013, 20:30

... indicators for teacher training programs could make a significant contribution to this effort While most school -based studies focus on outcomes for students, more research needs to analyze outcomes for ... mechanisms for program delivery • National and local policies • School policies and procedures for handling sensitive issues • Guidance on other sources of information, available community -based services ... approach that actively involves students, is skill -based, and uses real-life situations.2 A recent analysis of 11 school -based HIV prevention programs for African youth also identified teacher training...

Ngày tải lên: 14/02/2014, 13:20

... verb-to-verb span are considered 481 Arabic at most 12 for each VC; in German at most for each infinitive VC and for each VC-punctuation sequence, at most 10 for each broken VC Empirically, this yields on ... shown by its authors to outperform the default word -based on an Arabic-English task Finally, for German, we enable the Moses option monotone-atpunctuation which forbids reordering across punctuation ... the Association for Computational Linguistics (NAACL), pages 867–875, Los Angeles, California Association for Computational Linguistics Nizar Habash 2007 Syntactic preprocessing for statistical...

Ngày tải lên: 19/02/2014, 19:20

... quality due to more search errors Forest -based decoding Forest -based decoding (Mi et al., 2008) is a natural extension of tree -based decoding In principle, forest is a data structure that can ... BLEU4 For the phrase -based system, phrases are of at most words on either source or target-side For the hierarchical phrase -based system, all SCFG rules have at most two variables For the syntaxbased ... and two reordering models for the phrase -based system, or a Synchronous Context-free/Tree-substitution Grammar (SCFG/STSG) for the hierarchical phrase -based and syntax -based systems Then, an n-gram...

Ngày tải lên: 19/02/2014, 20:20

... indeed relevant to the target concerned Therefore, we argue that existing information representation i.e bag-of-word, cannot satisfy the information needs for opinion retrieval In this paper, we propose ... the target (topic term) Furthermore, based on word pairs, we designed a unified graph -based method for opinion retrieval (see later in Section 3) 3.1 Graph -based model Basic Idea Different from ... model was adopted The model used sentiment lexicon -based method for opinion identification and a conventional information retrieval method for relevance detection (3) ROSC: This was the model...

Ngày tải lên: 20/02/2014, 04:20

... into phrasebased translation, we now formally define a specific incremental parser for use in our experiments The parser must process target language words incrementally as the phrase -based decoder ... possible category for input “meets the” A sample phrase structure tree is shown before and after the right-corner transform in Figures and Our parser operates over a right-corner transformed probabilistic ... Association for Computational Linguistics, pages 849–857 Daniel Gildea 2003 Loosely tree -based alignment for machine translation In Proceedings of the 41st Annual Meeting of the Association for Computational...

Ngày tải lên: 20/02/2014, 04:20

... minimal then 8: Update bracketing instances for index j 9: end if 10: end if 11: end for 12: for each j ∈ c := ∪ {bracketing instances from j} 13: 14: end for 15: Output: bracketing instances We ... parse tree 3.3 The Integration of the SDB Model into Phrase -Based SMT We integrate the SDB model into phrase -based SMT to help decoder perform syntax-driven phrase translation In particular, we add ... however, is not only limited to phrase -based SMT using BTG rules Since it is applied on a source span each time, any other hierarchical phrase -based or syntax -based system that translates source...

Ngày tải lên: 20/02/2014, 07:20

... terms “mosquito” (for question 2) and “form” (for question 3), but only their inflected forms “mosquitoes” and “formed” Conclusion and Future Work We have presented three datasets for training statistical ... vector based measures are more flexible in that respect since the relatedness value is based on a common representation in a concept vector space It is therefore possible to measure relatedness for ... determined empirically based on MAP and R-Prec) The performance gaps between the translation -based models and the baseline models are statistically significant, except for those marked with a...

Ngày tải lên: 20/02/2014, 07:20

... approach outperforms the knowledge -based approach The third observation is that s-VSM -based method outperforms VSMbased method on f-1 score Besides, we surprisingly find that VSM -based method assigns ... sentiment vectors Experimental results are presented Table p Audio -based 0.504 Knowledge -based 0.726 VSM -based 0.587 s-VSM -based 0.783 R 0.701 0.584 1.000 0.750 f-1 0.586 0.647 0.740 0.766 a ... compare the ML approach against the KB approach, and 3) to compare the VSMbased ML approach against the s-VSM -based one Audio -based (AB) Approach We extract 10 timbre features and rhythm features...

Ngày tải lên: 20/02/2014, 09:20

... 艾克禮 Ackley *音響模型 聲學模型 acoustic model For instance, among many candidate translations, we will pick the translations "聲學模型" for "acoustic model" and "艾克禮" for "Ackley, " because they fit certain ... translate words and phrases out of the sentence context For example, Knight and Graehl (1998) describe and evaluate a multi-stage method for performing backwards transliteration of Japanese names ... methods Nagata, Saito, and Suzuki (2001) present a system for finding English translations for a given Japanese technical term by searching for mixed Japanese-English texts on the Web The method...

Ngày tải lên: 20/02/2014, 15:20

... shift-reduce parsing for unificationbased grammars Sections and explain unification -based grammars and default unification, respectively Shift-reduce parsing for unification -based grammars is presented ... performance, with an LF of around 88.5%, in the settings of parsing time less than 500ms/sentence for Section 22 For comparison with previous studies using the packed parse forest, the performances ... marked only as “strict” otherwise Shift-reduce parsing for unificationbased grammars Non-deterministic shift-reduce parsing for unification -based grammars has been studied by Briscoe and Carroll...

Ngày tải lên: 22/02/2014, 02:20

... value for all different query item q, as has been done for the topic model approach For fair comparison, the same postprocessing is made for all the approaches And the same preprocessing is made for ... and “topics” To further improve efficiency, we also perform preprocessing (refer to Section 3.4 for details) before building topic models for CR(q), where some lowfrequency items are removed Determine ... performed Sim1 and Sim2 respectively mean Formula 3.1 and Formula 3.2 are used in postprocessing as the similarity measure between 465 semantic classes The same preprocessing (h=4) is performed...

Ngày tải lên: 08/03/2014, 00:20

... In this study we have considered types http://sourceforge.net/projects/maxent/ 489 Type Word NE Tag Digit information Affix information POS information Features wi , wi−1 , wi−2 , wi+1 , wi+2 ti−1 ... prefix information are added with it (F7), the f-value is reduced to 72.5 491 POS information are important features in NER In general it is observed that coarse grained POS information performs ... for these four classes These are defined as having value if any of the context words belongs to the important words list for a particular class 4.3 Important Words for Each Position Position based...

Ngày tải lên: 08/03/2014, 01:20