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- Element Manager for WDM (SONET) Network Elements
- Wave Division Multiplexing technologies has provided more Bandwidth to transmission systems than was ever imagined earlier. The solution-path undertaken by Aricent to convert this opportunity into a success story comprised working on an Element Management system based on a distributed architecture using CORBA and Management applications being developed using JAVA....
- Tags: Software, SONET, Network, Object-oriented, WDM, Wave Division Multiplexing Technology, Optical Networking, Ooa/Ood/Oop, Networking, Software Development, Software/Web Development
- Case studies 2006-03-10
Additional Resources
- Optimal Training Signals for MIMO OFDM Channel Estimation
- This paper presents general classes of optimal training signals for the estimation of frequency-selective channels in MIMO OFDM systems. Basic properties of the discrete Fourier transform are used to derive the optimal training signals which minimize the channel estimation mean square error. Both single and multiple OFDM training symbols are...
- Tags: Training, MIMO-OFDM, Workforce Management, Human Resources
- White papers 2005-08-08
- Design and Simulation of Orthogonal Frequency Division Multiplexing (OFDM) Signaling
- A MATLAB program has been written to investigate Orthogonal Frequency Division Multiplexing OFDM communication systems. This program is valuable for future researchers simulating systems that are too theoretically complex to analyze. Single carrier QAM and multicarrier OFDM are compared to demonstrate the strength of OFDM in multipath channels. Two graphical...
- Tags: MATLAB Program, OFDM, Wireless
- White papers 2001-05-15
- An Algorithm for Constructing All Families of Codes of Arbitrary Requirement in an OCDMA System
- Optical Code Division Multiple Access OCDMA is a relatively new bandwidth-shared method for various kinds of network. Compared with traditional bandwidth-shared methods such as Time Division Multiplexing TDM and Wavelength Division Multiplexing WDM systems, OCDMA has many advantages such as high security and capacity potential. A novel code construction algorithm...
- Tags: Algorithm, IEEE, Engineering
- White papers 2006-01-18
- Hopping Pilots for Estimation of Frequency-Offset and Multiantenna Channels in MIMO-OFDM
- Orthogonal frequency-division multiplexing OFDM has been widely adopted by many standards (e.g., IEEE802.11a, IEEE802.11g in the U.S., and digital audio/video broadcasting (DAB/DVB), HiperLAN/2 in Europe), because it offers the possibility for high data rates at low decoding complexity. In this paper a pilot-symbol-assisted modulation for carrier frequency offset CFO and...
- Tags: MIMO-OFDM, OFDM, Wireless
- White papers 2005-01-01
- Dense Wavelength Division Multiplexing (DWDM)
- Dense wavelength division multiplexing DWDM is a fiber-optic transmission technique that employs light wavelengths to transmit data parallel-by-bit or serial-by-character. This tutorial addresses the importance of scalable DWDM systems in enabling service providers to accommodate consumer demand for ever-increasing amounts of bandwidth. DWDM is discussed as a crucial component...
- Tags: DWDM, Optical Networking, Networking
- White papers
- Designing IP NGNs With Cisco ONS 15454 MSTP and MetroPlanner
- The Cisco ONS 15454 MultiService Transport Platform MSTP is the industry benchmark for Dense Wave Length Division Multiplexing DWDM solutions, offering a comprehensive approach for designing, provisioning, and maintaining an optical network with the help of the Cisco MetroPlanner network design tool and the complete flexibility of Reconfigurable Optical Add/Drop...
- Tags: IP, Cisco Systems Inc., Networking
- White papers 2006-05-01
- Optical Networking and Dense Wavelength Division Multiplexing (DWDM)
- This paper deals with the twin concepts of optical networking and dense wavelength division multiplexing. The paper talks about the various optical network architectures and the various components of an all-optical network like Optical Amplifiers, Optical Add/Drop Multiplexors, Optical Splitters etc. Important optical networking concepts like wavelength routing and wavelength...
- Tags: DWDM, Optical Networking, Fiber Optics, Networking, Telecommunications
- White papers 1999-11-24
- TietoEnator to Deliver Managed Data, Storage and Mainframe Connectivity Services With Cisco Multiservice Optical Networking Solution
- TietoEnator is among the leading architects in building a more efficient information society and one of the largest IT services companies in Europe. Being able to take economic advantage of optical DWDM technology to provide managed SAN extension services with a virtualized core data center requires the ability to automate...
- Tags: Data Storage, Storage, DWDM, Mainframe, Cisco Systems Inc., TietoEnator, Optical Networking, Networking
- Case studies
- Interpolation-Based Multi-Mode Precoding for MIMO-OFDM Systems
- Spatial multiplexing with multi-mode precoding provides a means to achieve both high capacity and high reliability in Multiple-Input Multiple-Output Orthogonal Frequency Division Multiplexing (MIMO-OFDM) systems. Multi-mode precoding uses linear transmit precoding that adapts the number of spatial multiplexing data streams or modes, according to the transmit Channel State Information CSI....
- Tags: University Of Texas, MIMO-OFDM, OFDM, Wireless
- White papers 2005-02-09
- Orthogonal Frequency Division Multiplexing for Wireless Communications
- Orthogonal frequency division multiplexing OFDM is a promising technique for high-data-rate wireless communications because it can combat inter-symbol interference ISI caused by the dispersive fading of wireless channels. The proposed research focuses on techniques that improve the performance of OFDM based wireless communications and its commercial and military applications. In...
- Tags: Wireless Communication, OFDM, Wi-Fi, Wireless
- White papers 2004-11-16
- Deploying CWDM to Overcome Bandwidth Limitations of FTTH Access Networks
- FTTH networks in North America are being built using various PON architectures fed from a common backhaul. As networks grow in terms of geographic reach, subscriber counts and the scope and number of services offered, Coarse Wave Division Multiplexing CWDM has clearly become the preferred method for increasing the bandwidth...
- Tags: FTTH, Microsoft Access, Network, CWDM, Cube Optics, Optical Networking, Fiber Optics, Networking, Telecommunications
- White papers 2006-08-30
- MagicScore MIDI to WAVE (zip)
- MagicScore MIDI to WAVE is easy to use MIDI to WAVE and MusicXML to WAVE converter with compression option and user-friendly interface. MIDI to WAVE converter; MusicXML to WAVE converter; Karaoke to WAVE converter; MagicScore to WAVE converter; and Compression supported. This version is the first release on CNET Download.com.
- Tags: Converter, WAVE
- Software downloads 2008-01-21
- Spatial Multiplexing for Outdoor MIMO-OFDM Systems With Limited Feedback Constraint
- This paper proposes a spatial multiplexing technique for the downlink of a Multiple-Input-Multiple-Output MIMO Orthogonal-Frequency-Division-Multiplexing OFDM system. For outdoor environments with a limited angular spread at the base station, the proposed technique is able to separate the users' streams through a joint spatial processing at both the transmitter and the...
- Tags: Technique, Uppsala University, MIMO-OFDM, Transmission, Productivity, OFDM, Wireless
- White papers 2006-02-22
- My Wave Maximizer (msi)
- My Wave Maximizer can create a Big Sound wave file like a current CD sound from your wave file. My Wave Maximizer amplify a sound after compressing the upper area in order to reduce clipping noise and keep sound quality. But finally confirm sound with your ear. It's possible to...
- Tags: Sound
- Software downloads 2007-05-21
- Orthogonal Frequency Division Multiplexing Based on Offset QAM
- One of the factors determining the performance of wireless Orthogonal Frequency Division Multiplexing OFDM systems is time-frequency localization of the transmitter and receiver pulse shaping filters. OFDM based on offset quadrature amplitude modulation (OFDM/OQAM) bypasses a major disadvantage of OFDM based on ordinary QAM, namely the fact that time-frequency well-localized...
- Tags: ETH Zurich, OFDM, Wireless
- White papers
- Wireless Virtualization on Commodity 802.11 Hardware
- This paper describes specific challenges in virtualizating a wireless network and multiple strategies to address them. Among different possible wireless virtualization strategies, the current work in this domain is focussed on a Time-Division Multiplexing TDM approach. Hence, the paper presents the experiences in the design and implementation of such TDM-based...
- Tags: IEEE 802.11, University Of Wisconsin-Madison, Wireless Virtualization System, Virtualization, Wi-Fi, Wireless, Storage Management, Utility Computing, Hardware, Storage
- White papers 2006-12-29
- Extended Cross-Connect Capacity With Cisco ONS 15454 SDH Solutions
- Cisco ONS 15454 SDH solutions from Cisco Systems can be used in a multichassis configuration to offer extended cross-connect capacity. This paper describes this type of application and provides technical information about it. The carrier-class Cisco ONS 15454 SDH Multiservice Provisioning Platform MSPP solution offers unique benefits to service providers...
- Tags: SDH, Cisco Systems Inc., Fiber Optics, Optical Networking, Telecommunications, Networking
- White papers 2005-09-01
- D-wave demonstrates Quantum Computing, but skeptics galore
- Majority answerWhat if it is a tie at 4-4?Perhaps that state never comes...However, since D-wave has not elaborated on the technology or a peer review, questions remain.
- Tags: The 'G-Man', D-Wave, Quantum Corp.
- Discussion threads 2007-11-16
- Principles of MIMO-OFDM Wireless Systems
- The use of multiple antennas at both ends of a wireless link MIMO technology holds the potential to drastically improve the spectral efficiency and link reliability in future wireless communications systems. A particularly promising candidate for next-generation fixed and mobile wireless systems is the combination of MIMO technology with Orthogonal...
- Tags: ETH Zurich, MIMO, MIMO-OFDM, Wi-Fi, Wireless
- White papers
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