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Troubleshooting Digitally Modulated Signals With a QAM Analyzer
White Papers This paper gives an overview of the features available in many QAM analyzers, and more importantly, how to use those features to troubleshoot problems with digitally modulated signals. Quadrature Amplitude Modulation (QAM) is a modulation scheme...
[June 13, 2008, 1:01]
the Analogue terrestial signals
Talkback The digital terrestial signals remain and on the same band. It is only the analogue or in american spelling Analog transmitters being shut down.
[November 1, 2009, 9:39]
Using Constellation Shaping to Reduce the Peak and Average Power of OFDM Signals
White Papers This paper suggests applying constellation shaping to reduce the peak and average power of Orthogonal Frequency Division Multiplexing (OFDM) signals using Quadrature Amplitude Modulation (QAM) in all subcarriers without clipping or reducing the...
[April 11, 2007, 1:01]
Optimal Training Signals for SISO OFDM Channel Estimation in the Absence/Presence of Frequency Offsets
White Papers This paper addresses the problem of designing optimal training signals for SISO OFDM channel estimation in the presence of frequency offsets. First, the paper presents optimal training signals for OFDM channel estimation in the absence of frequency...
[April 11, 2007, 1:01]
PAPR Performance of IDFT-Based Uncoded OFDM Signals With Null Subcarriers and Transmit Filtering
White Papers In this paper, the Peak-to-Average Power Ratio (PAPR) is evaluated for the uncoded Orthogonal Frequency Division Multiplexing (OFDM) signals generated by using the IDFT procedure. Numerical results confirm that the proposed analysis accurately...
[April 11, 2007, 1:01]
Veescope Signals
Downloads Veescope Signals revolutionizes color correcting in Final Cut Pro. Whatever video you need to color correct, Veescope Signals can help make it look it's best. It's innovative video scopes allow you to make color adjusts easier and more...
[August 19, 2009, 19:51]
Peak-to-Average Power Ratio Reduction of OFDM Signals Using Pulse Shaping
White Papers This paper proposes an efficient technique for reducing the PAPR of OFDM signals. The proposed technique is very effective and avoids the use of extra Inverse Fast Fourier Transformations (IFFTs) as was done in some previously published techniques...
[April 18, 2007, 1:00]
Cannot handle Macrovision signals from DVD players
Member Review It can't handle Macrovision signals. Good image -- but not if you connect it to a DVD player! Background below. I wanted an XGA native resolution projector, that was 32DB or less, and would not cost much more than £1,500.
[March 15, 2004, 10:12]
Transmission of IEEE802.16d WiMAX Signals Over Radio-Over-Fibre IMDD Links
White Papers Finally, experiments demonstrating the feasibility of RoF technology to deliver WIMAX signals based in the IEEE 802.16d-2004 specification in the 3.5 GHz band are reported. In this paper, an overview of RoF technology is provided, followed by the...
[April 23, 2009, 1:24]
Government to boost power of digital TV signals
News In a consultative document published on Friday, e-commerce minister Douglas Alexander and Kim Howells, broadcasting minister, made a commitment to improve the reliability and coverage of Digital TV signals in the UK, in preparation for the switch...
[October 15, 2001, 17:49]
Virgin Trains boosts on-board mobile signals
News Virgin's cross-country trains are being fitted with equipment which will boost mobile signals. But now the train company is fitting all its London-to-north-Wales and cross-country trains with GSM repeaters, which will amplify mobile signals within...
[May 15, 2007, 15:17]
Blind Detection of CDMA Signals Based on Kalman Filter
White Papers This paper studies detection of CDMA signals based on Kalman filter. By defining combination of channel and transmitted signals as state variables, the state transition matrix and measurement matrix are derived without approximations.
[November 8, 2006, 0:00]
Time's Tiny takeover signals high street battle
Talkback WHAT WILL HAPPEN TO PEOPLE LIKE ME WHO HAVE PAID OUT OVER £1200 FOR A TV AND LOOKS LIKE I WILL NEVER REICEVE IT.
[July 30, 2005, 18:15]
Coral signals a new era for DRM
Talkback Just how much money are these companies willing to waste on protecting their "precious" property in the form of consortiums, programming, enforcement, taxpayer's expense and whatnot? The end result will always be passed on to the consumer in the...
[January 12, 2005, 23:09]
Efficient Detection of Zero-Padded OFDM Signals With Large Blocks
White Papers This paper presents a frequency-domain receiver for ZP-OFDM schemes (Zero-Padded Orthogonal Frequency Division Multiplexing) where the duration of the channel impulse response is a significant fraction of the duration of the OFDM block.
[April 11, 2007, 1:01]
Light cloud signals change of climate for IT
Comment Light operating systems and cloud computing are the final nails in the coffin of traditional practices, says Bob Morris. Computers and phones have changed dramatically over the past 30 years. Internet use is no longer restricted to one terminal per...
[September 8, 2009, 15:31]
Constructing a Demand & Consumer-Driven Enterprise: A Framework for Utilizing Demand Signals
White Papers As the industry continues its efforts to get "Closer to the consumer," many leaders predict the next transformation will be centered on the integration of demand data into key business processes. By utilizing accurate and timely downstream data...
[March 8, 2007, 0:00]
Optimal Training Signals for MIMO OFDM Channel Estimation in the Presence of Frequency Offset and Phase Noise
White Papers The authors develop robust Mean-Square Error (MSE)-optimal training signal designs for multiple-input multiple-output orthogonal frequency-division multiplexing channel estimation with frequency offset and Phase Noise (PN), and present analytical...
[April 13, 2007, 1:01]
IBM signals Unix-server boost
News IBM will announce a new dual-processor Unix workstation on Tuesday that could foreshadow a faster server as well. The IntelliStation Power 275 workstation is related to the company's bottom-end p615 Unix server, released in May, but it uses a...
[June 24, 2003, 7:42]
Shinho trouble signals monitor market storm
News The move follows this week's £1.4 million buy out of Microvitec's displays division by Conrac Technology. Although a small company, Shinho's demise is symptomatic of the current mood in the monitor market.
[February 19, 1998, 16:05]
