channel state
RSS channel stateWeb 2.0, cloud computing 'to transform business'
News Fenn said cloud computing and SOA will deliver business transformation by "driving deep changes in the role and capabilities of IT", while virtual worlds - such as Second Life - are currently suffering from being over-hyped but, in the long term... [11 Aug 2008]
Comparison of Iterative Detection Schemes for MIMO Systems With Spreading Based on OFDM
White Paper This paper considers a coded transmission over a time-invariant MIMO channel, where channel state information is present at the receiver but not at the transmitter. As basic modulation technique OFDM is applied. [10 Aug 2008]
LDPC Based Differential Unitary Space-Frequency Coding for MIMO-OFDM Systems
White Paper This paper proposes a novel LDPC based differential unitary space-frequency coding (DUSFC) scheme for MIMO-OFDM systems when neither the transmitter nor the receiver has access to the channel state information (CSI). [10 Aug 2008]
Effect of Spreading in an Outdoor MIMO-OFDM System
White Paper This paper considers transmission over an outdoor broadband MIMO channel where channel state information is present at the receiver but not at the transmitter. Multicarrier (MC) transmission schemes are considered to be promising candidates for the... [09 Aug 2008]
On the Capacity of Noncoherent Wideband MIMO-OFDM Systems
White Paper In this paper the capacity behavior of full-band MIMO-OFDM systems in the absence of channel state information both at the transmitter and the receiver is studied. Based on capacity lower and upper bounds, the transmission rate penalty due to... [09 Aug 2008]
Interpolation-Based Multi-Mode Precoding for MIMO-OFDM Systems
White Paper 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). Spatial multiplexing with multi-mode precoding provides a means to... [09 Aug 2008]
Adaptive Scheduling for Heterogeneous Traffic Flows in Cellular Wireless OFDM-FDMA Systems
White Paper Dynamic subcarrier scheduling copes with channel state variation by dynamically assigning different subcarriers to terminals, e.g.in the downlink of a cellular system. In addition to the channel state variations, also the arrival of data is highly... [08 Aug 2008]
Case Study: Clackamas County Oregon's Outdated Fibre Channel Infrastructure Runs Out of Capacity
White Paper Learn how one county government in the state of Oregon solved the problem of an aging Fibre Channel SAN that could not scale to meet growing needs. This case study discusses how Clackamas County's IT Department replaced an old Fibre Channel SAN... [07 Aug 2008]
Switch from oil to silicon
Comment For them the internet offers worldwide distribution, a low-cost sales channel and even access to the untapped potential of creative suppliers if you follow the model through to web 2.0 and user-generated content. [31 Jul 2008]
Gov't to ramp up IT outsourcing?
News Read more on outsourcing… in silicon.com's dedicated outsourcing channel Secretary of State for Business John Hutton promised a "long-term commitment to open up public service markets" that will make it easier for the private sector to win IT... [11 Jul 2008]
Optimal Granularity of MPLS Tunnels
White Paper While any set of LSPs, each LSP having an arbitrary rate, can be tunneled over a given â-channel as long as the aggregate rate does not exceed the channel's capacity, intuition suggests that this flexibility has a limit. [11 Jul 2008]
A Low-Noise Fast-Settling PLL With Extended Loop Bandwidth Enhancement by New Adaptation Technique
White Paper It enables the loop bandwidth in the speed-up mode to greatly exceed the limit of approximately 1/10 of the channel spacing in the integer frequency synthesizer. Based on the proposed adaptation scheme, a 450MHz frequency synthesizer with a 200kHz... [10 Jul 2008]
Principles and Architecture for a Conversational Agent
White Paper Rather than focusing on using speech as an alternative to keyboard, mouse, and screen, the project viewed speech as an additional channel of communication between the user and the computer. Lotus Speech Initiative, was formed to investigate how one... [09 Jul 2008]
An Efficient Polling Strategy for Bluetooth Piconets Using Channel State Information
White Paper The paper proposes a new piconet scheduling algorithm based on the estimated channel state information. In general the performance evaluation of most piconet scheduling algorithms recently proposed do not consider the packet losses in the wireless... [03 Jul 2008]
TCP/IP Performance Over 3G Wireless Links With Rate and Delay Variation
White Paper In addition, in order to increase throughput, intelligent channel state based scheduling have also been introduced. While these mechanisms have reduced the impact of losses on TCP throughput and improved the channel utilization, these gains have... [03 Jul 2008]
