for high speed parallel signal processing

... 3.9 BER performance comparison of MLSD and DA ML PE for 56-Gbit/s 16QAM signals with LLW=500kHz 62 3.10 BER performance comparison of MLSD and DA ML PE for 56-Gbit/s 16QAM signals with ... 81 4.3 BER performance comparison for 50-Gbit/s DQPSK signals with LLW=200kHz and 5MHz 84 4.4 BER performance comparison for 56Gb/s 16QAM signals with LLW=500kHz ... 105 5.3 BER vs SNR performance comparison of 40-Gb/s 16QAM signals for PA DAML and PA MLSD 108 5.4 BER performance comparison of 40-Gb/s 16QAM signals for PA DAML and PA MLSD...

Ngày tải lên: 12/09/2015, 09:28

... 1.4 FORMS OF PARALLELISM There are many different forms of parallelism for database processing, including (i) interquery parallelism, (ii) intraquery parallelism, (iii) interoperation parallelism, ... Cost Models for Parallel Redistribution Merge-All Sort Cost Models for Parallel Partitioned Sort 103 Cost Models for Parallel GroupBy 4.6.1 4.6.2 4.7 4.8 4.9 Parallel Merge-All Sort 83 Parallel ... Models for Parallel Processors 191 Parallel One-Index Search Query Processing Parallel Multi-Index Search Query Processing Parallel Index Join Algorithms 7.6.1 7.6.2 7.7 188 Parallel Processing...

Ngày tải lên: 21/01/2014, 18:20

... done in parallel Given that the one-processor elapsed time is hour, what is the speed up if 10 processors are used? (For simplicity, you may assume that during the parallel processing of the parallel ... models for skew are explained Skew is an important factor in parallel database query processing Therefore, understanding skew modeling is a critical part of understanding parallel database query processing ... involved in a parallel query processing 2.3 SKEW MODEL Skew has been one of the major problems in parallel processing Skew is defined as the nonuniformity of workload distribution among processing...

Ngày tải lên: 21/01/2014, 18:20

... skew and processing skew degrees are high OR no skew, then use parallel partitioned sort In this chapter, three parallel algorithms for processing GroupBy queries in high- performance parallel ... Figure 5.18 shows a high level pseudo-code of a parallel hash join algorithm Parallelism is achieved through the two parallels for loop, one for the hashing and the other for the probing The ... operation is carried out 92 Chapter Parallel Sort and GroupBy 4.4 PARALLEL ALGORITHMS FOR GROUPBY QUERIES Parallel aggregate processing is very similar to parallel sorting, described in the previous...

Ngày tải lên: 21/01/2014, 18:20

... 6.2 PARALLEL ALGORITHMS FOR GROUPBY-BEFORE-JOIN QUERY PROCESSING Depending on how the data is distributed among processors, parallel algorithms for GroupBy-Before-Join queries exist in three formats: ... analysis is to examine each parallel indexing structure in terms of its support for efficient parallel query processing, particularly for parallel search and parallel join For this purpose, Section ... at the algorithms for parallel search and parallel join query processing involving indexes As there are many different parallel indexing structures and parallel algorithms for search and join,...

Ngày tải lên: 21/01/2014, 18:20

... predicates Further processing follows the processing method for exact-match queries Parallel Algorithm for One-Index Search Query Processing The algorithm for parallel one-index search query processing ... index block processing, whereby for each nonindexed record R, we search for a matching index entry of table S Like other parallel join processing methods, parallel one-index join query processing ... NRI-2 or PRI-2 Unfortunately, parallel two-index join query processing cannot make use of these indexes Therefore, NRI-2 and PRI-2 are useless for parallelizing two-index join query processing Imagine...

Ngày tải lên: 21/01/2014, 18:20

... stands for restriction and ð p for join operation processing node P2 processing node processing node P1 P5 processing node R4 P3 R1 processing node processing node R2 P4 processing node R3 processing ... Scheduling and Optimization processing node P5 processing node R4 P3 processing node processing node processing node P2 P4 processing node R2 R3 processing node P1 processing node R1 processing node Figure ... and Parsing Internal form of query Parallel Query * Access Plan Formulation Optimization * Scheduling Execution Execution plan Parallel Query * Parallelization Models * Parallel Algorithms Execution...

Ngày tải lên: 21/01/2014, 18:20

... by any high load processing node when there exists a low load processing node For each subquery Qi in the ready queue, For each low load processing node j, Calculate cost increase 1Ci, j for migrating ... load processing node when there is at least one low load processing node but no high load processing node The medium load node communicates with a set of selected low load nodes and waits for ... dynamic load balancing for a hierarchical parallel database system NUMA The system consists of shared-memory multiprocessor nodes interconnected by a high- speed network and therefore, both intra-...

Ngày tải lên: 21/01/2014, 18:20

... designed for heterogenous DBMS, for example, multidatabase systems, need a global management layer for monitoring the execution of global transactions The former approach is unsuitable for a Grid ... model for DBMS with global information (distributed and multidatabase), and the recovery model for DBMS without global information (Grid database) Figure 12.8 shows the recovery model for an ... with replication of read-only files, therefore the problem of replica synchronization has not been well addressed The High- Performance Parallel Database Processing and Grid Databases, by David...

Ngày tải lên: 21/01/2014, 18:20

... either row parallelism or column parallelism will make little difference to parallel processing efficiency Assuming that row parallelism is adopted, the processing time will be the time for processing ... plus the time for aggregating all the m partial sums Thus the total processing time is that required for adding together n C m values Denoting by T r / the total processing time for processing r ... techniques to data mining processes Therefore, the focus of the two chapters on parallel data mining (Chapters 16 and 17) is twofold: High- Performance Parallel Database Processing and Grid Databases, by...

Ngày tải lên: 21/01/2014, 18:20

... several forms of parallelism that are available for data mining Chapter described various forms of parallelism, including: interquery parallelism (parallelism among queries), intraquery parallelism ... data parallelism and result parallelism in parallel clustering Data Parallelism Parallel k-Means Like count distribution in parallel association rules and parallel sequential patterns, data parallelism ... parallelism (parallelism within a query), intraoperation parallelism (partitioned parallelism or data parallelism), interoperation parallelism (pipelined parallelism and independent parallelism),...

Ngày tải lên: 21/01/2014, 18:20

... Parallel "GroupBy-Before-Join" Query Processing for High Performance Parallel/ Distributed Database Systems AINA (1) 2006: 693700 ( 2006 IEEE) [7] David Taniar Rebecca Boon-Noi Tan: Parallel Processing ... Singh, V., An Efcient Parallel Algorithms for High Dimensional Similarity Join, Proceedings of the International Parallel Processing Symposium/Symposium on Parallel and Distributed Processing (IPPS/SPDP), ... in parallel association rules In a parallel decision tree, these information sharing activities can be thought of as a mean to synchronize the decision tree, and hence data parallelism for a parallel...

Ngày tải lên: 26/01/2014, 15:20

... GroupBy-After-Join query processing parallel algorithms for, 148–151 GroupBy-Before-Join query processing, 143 early distribution scheme, 143 parallel algorithms for, 143–147 parallel algorithms for, 92–96 ... objective, parallel query processing, Literals, 441 Load cost parallel binary-merge sort, 100 parallel merge-all sort, 99 parallel partitioned sort, 104 parallel redistribution binary-merge sort, 102 parallel ... BIBLIOGRAPHY 539 Trujillo, R., “Application-Specific XML Processing: A Parallel Approach for Optimum Performance”, Proceedings of Parallel and Distributed Processing Techniques and Applications (PDPTA),...

Ngày tải lên: 26/01/2014, 15:20

... GroupBy-After-Join query processing parallel algorithms for, 148–151 GroupBy-Before-Join query processing, 143 early distribution scheme, 143 parallel algorithms for, 143–147 parallel algorithms for, 92–96 ... objective, parallel query processing, Literals, 441 Load cost parallel binary-merge sort, 100 parallel merge-all sort, 99 parallel partitioned sort, 104 parallel redistribution binary-merge sort, 102 parallel ... BIBLIOGRAPHY 539 Trujillo, R., “Application-Specific XML Processing: A Parallel Approach for Optimum Performance”, Proceedings of Parallel and Distributed Processing Techniques and Applications (PDPTA),...

Ngày tải lên: 26/01/2014, 15:20

... too small to store data for a more than 50,000 morpheme dictionary The above mentioned parallel processing computers realize the one to many comparison On the parallel processing computers, one ... believe it is suitable for VLSI implementation Actually, its VLSI implementation is in progress A high speed morpheme extraction VLSI will improve the performance of such text processing applications ... "Linguistic Processing in a Japanesetext-to-speech-system", International Conference on Text Processing with a Large Character Set: 315-320 Nak~mura, O., Tanaka, A and Kikuchi, H (1988) "High- Speed Processing...

Ngày tải lên: 21/02/2014, 20:20

... Interestingly, cosine similarity is widely used in NLP for various applications such as clustering In this paper, we perform high speed similarity list creation for nouns collected from a huge web corpus ... different random permutation for every vector (by choosing random values for a and b, q number of times) Thus for every vector we have q different bit permutations for the original bit stream ... calculated using the traditional formula as given in equation For this base comparison system we use the one built by Pantel and Lin (2002) We perform kinds of evaluation: Performance of Locality Sensitive...

Ngày tải lên: 08/03/2014, 04:22

... BER performance, the proposed system can be used in joint with a high- resolution imaging angle diversity receiver power uniformity of the transmitter has yet to be optimized For high performance ... than 50% for k < 2) but for configuration E that of higher-order impulses responses still can add to a significant amount (∼10% for k = 5) in the total power received Taking the Fourier transform of ... of view as well as the power receiving performance A prototype multibeam transmitter suitable for producing uniform, near hemisphere or 180 degree, high speed, and long distance infrared radiation...

Ngày tải lên: 21/06/2014, 17:20

... with fixed complexity and parallelism for hard decision In [5], a lowcomplexity near-MAP detection method is proposed for high- order modulation (e.g., 64-QAM) The performance loss from MAP due ... be much higher For MFCSO, channel-rate processing includes the QR decomposition in (9) For MFCSO, aside from computing W, QR decomposition is also needed according to (9) 4.2 Symbol-Rate Processing ... Hence, the former one is assumed to target high- end users willing to pay more in area and power for performance (e.g., laptops) The MMSE single-mode detector is in favor of low-end users for connectivity...

Ngày tải lên: 21/06/2014, 17:20

... three transformation steps: the hierarchy flattening transformation, the HSDF transformation, and the DAG transformation (see Section 3.3.2) These transformations prepare the graph for the static ... S Bhattacharyya and E A Lee, “Memory management for dataflow programming of multirate signal processing algorithms,” IEEE Transactions on Signal Processing, vol 42, no 5, pp 1190–1201, 1994 [48] ... Graph Transformation Module In order to generate an efficient schedule for a given algorithm description, the application defined by the designer must be transformed The purpose of this transformation...

Ngày tải lên: 21/06/2014, 20:20

... free large signal modulation of any VCSEL at 85 °C 20 Gb/s [3], [44] or faster [4] large signal modulation experiments have been performed at lower temperatures, but the high speed performance ... performance, i.e high external efficiency even at 85 °C, these devices demonstrate the potential of this novel active material for temperature stable ultra high speed VCSELs At room Large Signal ... significant increase of the modulation speed of VCSELs combined with the demands for power, degradation robustness and speed of next generation ultrahigh speed systems require new material and...

Ngày tải lên: 22/06/2014, 18:20