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diversity (10 results)
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- NamesSorry, had to take down this post for personal reasons. Thanks for your commentsNow, this dependsIf it is difficult because it is a traditional name from another culture, then by all means this is a chance to learn something. ( and if you don't like to learn things, then...
- Discussion threads 2005-12-22
- Learn to harness the full potential of a diverse workforce
- Certain factors, including demographic shifts and affirmative action policies, are driving diversity in the workplace. It's to your advantage as a manager to fully harness the capabilities of a diverse workforce. Here's how.The risks of ignoring the diversity trendsTo find out more about what factors are driving diversity in the...
- Technical articles 2003-08-18
- How to achieve real diversity in IT
- While just hiring people who look different may satisfy internal mandates or passing fads, the truly beneficial form of diversity comes from a diversity of ideas and experience. by Patrick Gray
- Blog posts 2008-09-03
- Ancient word processors highlight the lack of modern software diversity
- One of the claims of superiority that Microsoft claims with Windows over the Mac is the amount of software that's made to run under Windows. Even though there are thousands of programs available, the actual diversity of software seems to have diminished compared to the 80's. Word Processors are an...
- Blog posts 2008-10-29
- Slow Subcarrier-Hopped Space Division Multiple Access OFDM Systems
- Space Division Multiple Access SDMA assisted Multi-Input-Multi-Output MIMO OFDM systems invoking Multi-User Detection MUD techniques have attracted substantial research interests, which are capable of exploiting both transmitter multiplexing gain and receiver diversity gain. Furthermore, the classic Frequency-Hopping FH technique can be effectively amalgamated with SDMA-OFDM systems, resulting in Frequency-Hopped FH...
- White papers 2005-03-18
- On Cyclic Delay Diversity in OFDM Based Transmission Schemes
- Cyclic Delay Diversity CDD is a simple approach to introduce spatial diversity to an Orthogonal Frequency Division Multiplexing OFDM based transmission scheme that itself has no built-in diversity. It also can be regarded as a Space-Time Code STC. But in contrast to that there is no additional effort in the...
- White papers
- MIMO in 3G Cellular Systems: Challenges and Future Directions
- The multidimensional MIMO channel can be exploited to increase the diversity of the system or to provide parallel spatial channels, which is known as spatial multiplexing. Diversity is generally considered lower risk, and a well-known example is space-time codes, which have found adoption in 3G CDMA cellular systems. Diversity increases...
- White papers 2005-04-29
- Diversity Analysis for Frequency-Selective MIMO-OFDM Systems With General Spatial and Temporal Correlation Model
- In this paper, the effect of a general spatial and temporal fading correlation structure on the performance of coded MIMO-OFDM systems is studied. The analysis handles an arbitrary joint transmit-receive spatial correlation model including the non-Kronecker model. An upper bound on the maximum achievable diversity order for frequency-selective MIMO-OFDM systems...
- White papers 2005-08-09
- A Reduced Complexity Channel Estimation for OFDM Systems With Precoding and Transmit Diversity in Mobile Wireless Channels
- A precoding approach for reduced complexity channel estimation for OFDM systems with transmit diversity is presented. Two different OFDM schemes that employ the precoding are investigated: the first one is based on space-time coding, the second is based on a transmit diversity using an optimal design of symbols for channel...
- White papers 2006-02-07
- ilib diverse 1.02 (Windows)
- ilib diverse creates virtual drug-like compound libraries using a heuristic fragment combination approach. ilib diverse is intuitive to use, and offers a lot more than the essential features for virtual library generation. Compounds are built by combining user-defined fragments according to state-of-the-art chemical knowledge. Various user-adjustable contraints allow a...
- Software downloads 2006-08-12
Additional Resources
- Ancient word processors highlight the lack of modern software diversity
- WordStarWriter's Digest once did a word-processing software annual. I believe it was in 1985. As the main contributor to that, I tried everything from ScriptSit to XyWrite. I got sick of word processors after writing three dozen reviews--using WordStar, which I found superior to the rest, for...
- Discussion threads 2008-10-29
- How to achieve real diversity in IT
- RE: How to achieve real diversity in ITAs a Twenty Three year old female high school graduate without a college credits; I can honestly say that a diverse work place is possible. I have had many jobs in my time and many more careers. I have been very fortunate to...
- Discussion threads 2008-09-04
- Select strong passwords that baffle the bad guys: Apply the principle of character diversity
- Character diversity is a key component of strong passwords. By using many types of characters, we reduce the predictability and weakness of our passwords. In other words, increasing the types of characters we use greatly increases our chances of building unique passwords that are more difficult (i.e. take longer) to...
- Book chapters 2006-10-18
- Multimedia Communication Over OFDM Mobile Wireless Networks: A Cross-Layer Diversity Approach
- Diversity can be used to combat multipath fading and improve the performance of mobile wireless multimedia communication systems. In this work, by considering transmission of an embedded bitstream over a slow varying Rayleigh faded environment, the authors develop a cross-layer diversity technique which takes advantage of both multiple description source...
- White papers
- Differential Modulation Diversity for OFDM
- The application of Differential Modulation Diversity DMD to orthogonal frequency division multiplexing with multiple transmit and/or receive antennas is considered. Based on diagonal signals originally designed for differential space-time modulation, DMD is used to exploit both space and frequency diversity. At the receiver, low-complexity decision-feedback differential detection without channel state...
- White papers
- Cooperative Diversity in Wireless Networks: A Geometry-Inclusive Analysis
- Cooperation between physically separated wireless nodes can achieve the high Signal-to-Noise Ratio SNR diversity gains characteristic of multi-antenna arrays. Simulations indicate that such gains are still achieved for SNRs in the range of practical interest for several applications. Cooperation further yields SNR gains in addition to diversity gains. In contrast...
- White papers 2006-03-10
- A Full-Rate Full-Diversity 2×2 Space-Time Code for Mobile WiMAX Systems
- The recently developed IEEE 802.16e specifications for broadband wireless access include three multiple-input multiple-output MIMO profiles employing 2×2 Space-Time Codes STCs and two of those are mandatory on the downlink of Mobile WiMAX systems. One of these is full rate, and the other is full diversity, but neither of them...
- White papers 2008-03-26
- Low-Complexity Channel Estimation for Transmitter Diversity OFDM Systems
- Orthogonal Frequency Division Multiplexing OFDM has recently been proposed for achieving high-bit rate communication required in wireless systems. Transmitter diversity can be used with OFDM system for performance improvement in a fading environment. For these systems the receiver requires channel state information for decoding. This paper proposes a novel low...
- White papers
- A Low Complexity Antenna Diversity Receiver for OFDM Based Systems
- A low complexity antenna diversity architecture with a new combining technique suitable for Orthogonal Frequency Division OFDM based systems is introduced in this paper. For a two branch antenna diversity, this structure requires only one FFT at the receiver and allows optimum maximum ratio combining. For systems with a higher...
- White papers
- Capacity Scaling of Ad Hoc Networks With Spatial Diversity
- This paper derives the exact outage probability and transmission capacity of ad hoc wireless networks with nodes employing multiple antenna diversity techniques. The analysis enables a direct comparison of the number of simultaneous transmissions achieving a certain data rate under different diversity techniques. Preliminary results derive the outage probability and...
- White papers 2007-01-23
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