for high speed parallel signal processing

... 90º should not even be considered for high-speed signals Figure 6: High-Speed Corners Another common problem is stub traces Unless there is a specific reason for using them, all stubs should ... must ensure that no signal traces are routed over the slot The same rules apply for mixed-signal PCBs except that they often use multiple grounds This is typical of a high-performance ADC that ... problem is even more critical with mixed-signal circuits For example, consider a system that relies upon a high-performance ADC to digitize received analog signals The energy on the digital outputs

Ngày tải lên: 24/10/2022, 20:52

... Models for Parallel Redistribution Binary-Merge 4.5.5 Cost Models for Parallel Redistribution Merge-All Sort 102 4.5.6 Cost Models for Parallel Partitioned Sort 103 4.6 Cost Models for Parallel ... 24Chapter 1Introduction Parallel databases are database systems that are implemented on parallel com-puting platforms Therefore, high-performance query processing focuses on query processing, including ... this section answers the questions objec-of how parallelism can be performed in parallel database processing. High-Performance Parallel Database Processing and Grid Databases, by David Taniar,

Ngày tải lên: 21/01/2014, 18:20

... analyze the scalable performance ob-tained by TMAC in high-speed wireless LANs, under various user populations We first characterize the overall network throughput performance in TMAC, then analytically ... rates higher than or equal toR f are categorized as high-rate sta-tions, thus granted proportional temporal share in that the access time is roughly proportional to the current data rate For low-rate ... pa-rameters, and contend for the channel access Once a station succeeds in contention, adaptive batch transmission allows for the station to transmit multiple concatenated packets for a period equal

Ngày tải lên: 22/06/2014, 19:20

... 1DEVELOPMENT OF HIGH MOBILITY CHANNEL LAYER FORMATION TECHNOLOGY FOR HIGH SPEED CMOS DEVICES OH Hoon Jung NATIONAL UNIVERSITY OF SINGAPORE 2010 Trang 2DEVELOPMENT OF HIGH MOBILITY CHANNEL LAYER FORMATION ... anneal at 700 oC for 10 sec (a) and with the PxNy passivation layer after at 600 oC for 1 min (b), at 700 oC for 10 s (c), and 750 oC for 5 s (d) For substrate, In0.53Ga0.47As is used for (a), (b), ... (a) J G as a function of EOT for three different high-k layers with various dielectric constants (shown as ε) and E g [18] (b) E g vs ε for candidate high-k oxides for MOSFET scaling [20] 14

Ngày tải lên: 11/09/2015, 10:00

... interposers for the application of fine-pitch, high-speed wafer-level packaged device testing have been proposed and studied An interposer is needed for the wafer level test because the fine pitch, high ... dB at 5 GHz, the target high-speed I/Os of the specifications Therefore, it is not suited for the required wafer level packaged (WLP) Trang 8device test and was therefore not fabricated In contrast, ... interposer is required for the electrical high speed testing of fine pitch wafer level packaged devices It provides a solution to the required fine pitch, high density I/Os, high pin count and vertical

Ngày tải lên: 04/10/2015, 10:25

... proposed speed control algorithm Typical foreground and background frame is adopted in the implementation of the proposed speed control algorithm for high-speed CNC systems as shown in Fig 6 The foreground ... machining becomes very im-portant for enhancing the performance of the CNC equipment Many researchers are working focusing on the field of speed control for high-speed machining In [3, 6], an acceleration/deceleration ... char-acteristics, the speed control algorithm usually affects the machining efficiency, quality of parts, and longevity of cutter Therefore, efficient speed control algorithm suitable for high-speed machining

Ngày tải lên: 26/04/2019, 21:54

... of a causal signal xa(t) can be obtained from the Laplace transformXa(s) be replacing s by j2πf Is this also true for noncausal signals? Trang 101.9 Consider the following periodic signal.xa(t) ... sampling theorem in the followingway: “A signal must be sampled at twice the highest frequency present to avoid aliasing” Interesting enough, this informal formulation is not quite correct To verify ... purpose of this problem is to numerically verify the signal reconstruction formula inProposition 1.2 Consider the following bandlimited periodic signal which can be thought of as a truncated Fourier

Ngày tải lên: 20/08/2020, 12:02

... Moreover, the manufacturing techniques developed based on R2R processing minimize human handling, and, consequently, lead to high quality and high speed automation The R2R systems are defined as systems ... material Therefore, the prompt vibration suppression together with the tension regulation and the transport velocity tracking control is desirable to improve the control performance of high speed precision ... exist and, definitely, become the main quality- and productivity-limiting factor, especially for high speed precision machine systems Such vibrations must be suppressed, and in many industries,

Ngày tải lên: 23/01/2021, 10:34

... stimulated for test, by custom waveforms The use of arbitrary waveform generators to stimulate electro- mechanical device cycles, for example, disk or tape drive signals, may obviate the need for application ... stated in summary form As the need for high precision function generation and custom waveforms has grown the range of applications for which the arbitrary waveform generator is the best stimulus ... cost/performance envelope of direct digital synthesis techniques for the generation of arbitrary waveforms Performance is enhanced, particularly in the areas of output bandwidth and signal purity

Ngày tải lên: 20/10/2022, 23:26

... FPGA), plus ADC and high-order analog filters for the feedback plus multiple power transistors and gate drivers for multi level PWM As a result high-performance systems require high circuit complexity, ... our work is higher than 90% The digital processing tasks in [13] require the use of multiple boards (1 DSP board for Trang 10the digital audio processing plus 1 FPGA board for PWMprocessing) ... remove high frequency spurious rep-etitions of the baseband signal The higher the oversampling factor M is, the higher ( ↑ M) the PWM carrier frequency is and hence the transition bandwidth for

Ngày tải lên: 21/06/2014, 20:20

... (listed inTable 5)support the following data types:pixel format for true-color graphics and images, fixed16 format for 8-bit data,and fixed32 format for 8-, 12-, or 16-bit data The partitioned add, subtract, ... thenthe data processing procedure for each block is exactly the same This kind ofsymmetry carries a huge amount of parallelism A high-performance programma-ble VSP must have a well-defined parallel ... processor (VIP) for imagepreprocessing, the L64120 advanced motion estimation processor (AMEP) forcomputation-intensive motion search, and the L64130 advanced video signal pro-cessor (AVSP) for coding

Ngày tải lên: 12/10/2016, 13:14

... manifold. For further information on derivation and implementation of this hard constraint refer to [1] and references therein. The closed form analytical expressions for first and second order informa- tion ... combinations,” Digital Signal Processing, vol 6, no 1, pp 5–16, Jan 1996 6 K J Pope and R E Bogner, “Blind signal separation II: Linear, convolutive combinations,” Digital Signal Processing, vol ... The tradeoff is that by formulating algorithms in the frequency domain we can perform less computations and processing time falls, but we still must fix the permutations for individual frequency

Ngày tải lên: 19/01/2014, 18:20

... 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

... 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