vlsi

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A Hardware Efficient VLSI Architecture for FFT Processor in OFDM Systems

This paper presents a hardware efficient FFT implementation architecture using a novel data access scheme for OFDM applications. By conversion of digit-reversed to bit-reversed order addressing, continuous flow FFT processing can be achieved using 2 N-word memories by alternation between natural order and bit-reversed order addressing. An in-place multi-bank memory...

Tags: Memory, Order, Hardware, VLSI, OFDM, Wireless

White papers 2005-07-30

Hermitian Optimization and Scalable VLSI Architecture for Circulant Approximated MIMO Equalizer in CDMA Downlink

The growing demands for broadband multimedia services, ubiquitous networking via mobile devices push the development of advanced modem technology. Multiple Input Multiple Output MIMO technology using multiple antennas at both the transmitter and receiver has recently emerged as one of the most significant technical breakthroughs in modern communications. On the...

Tags: Multimedia, Rice University, Optimization, CDMA, MIMO, VLSI, Modems, Cellular Phones, Semiconductors, Hardware, Components, Consumer Electronics, Personal Technology

White papers 2005-06-06

An Efficient Circulant MIMO Equalizer for CDMA Downlink: Algorithm and VLSI Architecture

Wireless communication is experiencing radical advancement to support broadband multimedia services and ubiquitous networking via mobile devices. MIMO Multiple Input Multiple Output technology using multiple antennas at both the transmitter and receiver has emerged as one of the most significant technical breakthroughs for throughput enhancement. This paper presents an efficient...

Tags: Algorithm, Rice University, CDMA, Wireless Communication, MIMO, VLSI

White papers 2005-06-05

Digital VLSI OFDM Transceiver Architecture for Wireless SoC Design

This paper presents the VLSI architecture of an OFDM baseband transceiver for wireless communications. The open-/closed-loop carrier recovery achieves the stepping frequency acquisition for high-band RF systems, and the proposed timing recovery cooperated with the self-correcting interpolation realizes an OFDM baseband digital IP design. Hardware sharing and power-of-2 coefficients fulfill...

Tags: Transceiver, VLSI, OFDM, Semiconductors, Wireless, Hardware

White papers 2005-01-11

Additional Resources

Fast and Scalable Pattern Matching for Network Intrusion Detection Systems

High-speed packet content inspection and filtering devices rely on a fast multi-pattern matching algorithm which is used to detect predefined keywords or signatures in the packets. Multi-pattern matching is known to require intensive memory accesses and is often a performance bottleneck. Hence specialized hardware-accelerated algorithms are required for line-speed packet...

Tags: Algorithm, Network Intrusion Detection System, Network, Memory, Intrusion Detection System, Engineering, Flash Memory, Content Management, Enterprise Software, Software

White papers 2008-01-01

Semi-Oblivious Routing: Lower Bounds

This paper initiates the study of semi-oblivious routing; a relaxation of oblivious routing which is first introduced by Racke and led to many subsequent improvements and applications. In semi-oblivious routing like oblivious routing, the algorithm should select only a polynomial number of paths between the source and the sink of...

Tags: Cornell University, Sink, Engineering, Semiconductors, Hardware

White papers 2008-01-01

CAD software leads to faster chips

Even if some scientists want to replace silicon by carbon to create faster computer chips, other researchers are developing faster integrated circuits from silicon by simply using computer-aided design CAD software based on better mathematical algorithms than commercial software. A UCLA team has shown that it is possible to reduce...

Tags: University Of California At Los Angeles, Node, Mathematics, Chip, UCLA Team, CAD, Semiconductors, Network Technology, Software, Hardware, Networking, Roland Piquepaille

Blog posts 2007-12-23

A 10000 Fps CMOS Sensor With Massively Parallel Image Processing

A high speed analog VLSI image acquisition and pre-processing system has been designed and fabricated in a 0.35 µm standard CMOS process. The chip features a massively parallel architecture enabling the computation of programmable low-level image processing in each pixel. Extraction of spatial gradients and convolutions such as Sobel or...

Tags: Gradient, Pixel, CMOS, Sensor, IEEE, Image Processing, Retina, Memory, Semiconductors, Hardware, Components

White papers 2007-12-01

Statistical Static Timing Analysis Technology

With CMOS technology scaling down to the nanometer realm, process variations have been increased. In particular, the increase of delay variations has seriously affected the design periods and timing yields. To estimate more accurately these delay variations, Statistical Static Timing Analysis SSTA, which considers delay variations statistically, has been proposed....

Tags: Fujitsu Ltd., Variation, Analysis, Statistical Static Timing Analysis, ASICs, Semiconductors, Hardware

White papers 2007-10-01

Build a $2,500 supercomputer

Build a $2,500 supercomputerYou do need a day off!Monday is Labor Day! lol!Add a Terabyte or four Raid Array to the system.Add a Terabyte or four Raid Array to the system. Available now for $600 in refurb units at buy.com. Don't forget the advent of quad cpu's...

Tags: RAID, Performance management, Processors, Semiconductors, Blade servers, Advanced Micro Devices Inc., Deep Blue, Cray Inc., supercomputer

Discussion threads 2007-09-01

Intel readies massive multicore processors

Intel readies massive multicore processorsApplicability: Top 5...PleaseThis is a great milestone for chip development. However, what's the "payoff"? What do you do with a chip that has 80-96 processing cores? It challenging now with the possibility of 8 and 16.I'm not saying that this work is irrelevant...

Tags: Processors, Borkar, Polaris, processor, Intel Corp., FP MAC, memory, multi-core processor

Discussion threads 2007-06-14

A wireless power transmission plastic sheet

Several companies have started to sell power pads that can charge your cellphone when you put it on the pads surface. But these silicon-based pads are expensive -- and relatively specialized. Now, Japanese researchers have built a plastic sheet which could power all the devices placed close to it. So...

Tags: Wireless &, Telecom, Engineering &, Innovation, Energy &, Environment, Computers &, Internet

Blog posts 2007-04-30

Emotiv's man-machine melding interface technology

The human-computer interface has always been clunky. You grapple with various manual input devices to give commands to a computer. Voice interaction is starting to take hold, at least for unforgiving call center applications or "call home" commands, but mind control--connecting our brains to computers--remains elusive. Startup Emotiv Systems is...

Tags: Entertainment, General

Blog posts 2007-03-06

Adaptive Sensing and Image Processing With a General-Purpose Pixel-Parallel Sensor/Processor Array Integrated Circuit

In this paper, a pixel-parallel image sensor/processor architecture with a fine-grain massively parallel SIMD analogue processor array is overviewed and the latest VLSI implementation, SCAMP-3 vision chip, comprising 128 × 128 array, fabricated in a 0.35µm CMOS technology, is presented. Examples of real-time image-processing executed on the chip are shown....

Tags: Integrated Circuit, Vision, IEEE, Image Processing, Chip, Semiconductors, Strategy, Network Technology, Hardware, Management, Networking

White papers 2006-09-01

High-Resolution Ultrawideband SAR Based on OFDM Architecture

This white paper addresses the proposal of research aimed at the development of detailed model-based description of high-resolution potentially jamming-resistant portable Synthetic Aperture Radar SAR system with rapid radar image transmission capabilities for complete battle-scene reconstruction. High resolution of obtained imagery and resistivity to certain types of jamming will be...

Tags: UWB, High-resolution, Transceiver, OFDM, Ultrawideband (UWB), Wireless

White papers 2006-08-22

AMD to shell out $5.4 billion for ATI

AMD to shell out $5.4 billion for ATIAMD is no longer the leader in technology.The Core 2 Duo spanks them in independent benchmarks. It is also highly unlikely that they will incorporate the GPU on the CPU. The resulting power rating for the CPU would give them an...

Tags: Chipsets, Semiconductors, Advanced Micro Devices Inc., chipset, NVidia Corp., ATI Technologies Inc., Intel Corp.

Discussion threads 2006-07-24

OwlVision GDSII Viewer (zip)

OwlVision GDSII Viewer is used for viewing VLSI layout which is in GDSII/GDS2/GDS Stream format. It is implemented in Java programming language. Virtually, the program can be run on all of the platforms. Both GDSII to ASCII and ASCII to GDSII translators are built into this GDSII Viewer. You do...

Tags: ASCII, Layout, OwlVision GDSII Viewer, Viewer Function

Software downloads 2006-06-05

Reconciling Principle and Practice in a LAN Course: A Simulation and Lab Mixed Approach

Teaching Local Area Network LAN may need a balance between LAN principle and LAN practice. The important principles of LAN are mostly embedded in the PHYsical PHY layer and the MAC layer. MAC and PHY protocols are integrated in VLSI chips and are not accessible to ordinary users. Without a...

Tags: Network, LANs, Network Technology, Networking

White papers 2006-03-28

Intel tweaks Pentium D for servers

Intel tweaks Pentium D for serversIntel playing catch up to thebig boys (IBM Power4/5, SUN Niagara) and even AMD (dual-core processors) ....Intel lost its vision of the future. No Itanium 3/4 just the dynosauric x86 .... Intel, where is your past glory?Just for the sake...... of making a commentYes, Intel...

Tags: Processors, EPIC, server, Intel Pentium, Intel Itanium 2, Intel Corp., Intel x86, Advanced Micro Devices Inc., processor, Intel Itanium, dual-core, big boy

Discussion threads 2005-07-08

Maybe now, Intel's Centrino will offer a technical advantage

For years, Intel and I have been at odds over advantages of going with a Centrino-enabled notebook versus a non-Centrino notebook. I've argued that Centrino is nothing more than a package of Intel-only parts that has so far proven to be no more competent at connecting to and using...

Tags: Intel Corp., Intel Centrino

Blog posts 2005-06-17