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Constant Envelope OFDM Phase Modulation: Spectral Containment, Signal Space Properties and Performance
White Papers The signal space is studied by considering the correlation properties of the OFDM-PM signals. A class of constant envelope OFDM phase modulated (OFDM-PM) signals is studied. The motivation behind OFDM-PM is to alleviate the high peak-to-average...
[October 21, 2004, 0:00]
Signal-Specialized Parameterization for Piecewise Linear Reconstruction
White Papers This paper proposes a metric for surface parameterization specialized to its signal that can be used to create more efficient, high-quality texture maps. Derived from Taylor expansion of signal error, the metric predicts the signal approximation...
[July 19, 2007, 1:00]
Digital Transmission: Carrier-To-Noise, Signal-To-Noise & Modulation Error Ratio
White Papers This paper provides a background on several signal quality metrics applicable to CMTS and cable network operation and how they relate to overall performance. The CMTS upstream SNR and cable modem or STB downstream SNR estimates are explained.
[March 2, 2009, 19:18]
NCP Network Communications Products Engineering Case Study: SIGNAL IDUNA Group
White Papers The SIGNAL IDUNA Group, with their over 10 million insured and contracts, is one of the top ten insurance groups in Germany. The SIGNAL IDUNA Group deployed NCP-solution and took remote access vie notebook, desktop via Internet, strong...
[May 16, 2009, 1:17]
Signal GH
Downloads Signal GH is a tool for American and Canadian users of the HDHomerun networked digital TV tuner who want to monitor and improve their Over The Air (OTA) reception quality. It graphs the signal quality from two channels simultaneously, allowing the...
[September 30, 2008, 15:12]
On MIMO Signal Processing for Adaptive W-CDMA and OFDM Wireless Transceivers
White Papers This paper considers wideband extensions of narrowband signal processing techniques for MIMO wireless transceivers. The paper focuses on signal processing techniques for channel estimation and correction, including pilot-aided and decision-directed...
[July 21, 2005, 6:00]
The Complex Envelope of a Bandlimited OFDM Signal Converges Weakly to a Gaussian Random Process
White Papers Orthogonal Frequency Division Multiplexing (OFDM) systems have been used extensively in wireless communications applications in recent years; thus, there is significant interest in analyzing the properties of the transmitted signal in such systems.
[April 13, 2007, 1:01]
Design of High-Power CW Signal Generators for WiMAX Network Planning
White Papers For the application of WiMAX network planning, especially for the channel model calibration of wireless propagating, broadband and High-Power CW signal generators were designed in this paper. This work comprise two individual generators, one...
[April 22, 2009, 1:24]
Researchers crack Galileo signal codes
News The signal transmitted from GIOVE-A (Galileo In-Orbit Validation Element-A) was broken after researchers intercepted the signals using a roof-mounted hemispherical patch antenna and a digital storage receiver.
[July 13, 2006, 16:35]
Estimation of Carrier-Frequency Offset and Frequency-Selective Channels in MIMO OFDM Systems Using a Common Training Signal
White Papers This paper presents a common training signal design and corresponding estimation methods for carrier frequency offset and frequency-selective channels in MIMO OFDM systems. In designing the common training signal, a training signal structure which...
[April 13, 2007, 1:01]
The Effectiveness of Signal Clipping for PAPR and Total Degradation Reduction in OFDM Systems
White Papers Signal clipping has been suggested as an effective Peak-to-Average Power Ratio (PAPR) reduction scheme for orthogonal frequency-division multiplexing (OFDM). This paper analyzes clipped M-ary differentially encoded phase-shift keying (M-DPSK) OFDM.
[April 11, 2007, 1:01]
Single-Chip Baseband Signal Processor for Software-Defined Radio
White Papers Reconfigurable processor technology offers a way to couple significant hardware performance improvements with realtime software signal processing. First, the hybrid architecture consists of reconfigurable signal processors and accelerator circuits.
[June 7, 2006, 1:00]
Privacy Preserving Data Mining: A Signal Processing Perspective and a Simple Data Perturbation Protocol
White Papers First, the paper shows that the problem can be recast as a deconvolution problem and signal processing algorithms can be applied to solve this problem. Privacy concerns over the proliferation of gathering of personal information by various...
[October 7, 2008, 0:00]
Where's my signal gone!
Member Review Had the phone on 02 and took it back after a week because of really poor signal pull, I got 2 bars to now compared to my SPV c550 which had 4 in same area. Handling this phone made the signal disappear completly and took the phone a good while to...
[November 23, 2005, 16:07]
The Application of Signal's Cyclostationarity in OFDM Systems
White Papers Blind signal processing is one of necessary methods for high data rate communication because no aided data are required, which will bring redundancy. Many communication signals can be regarded as cyclostationary signal.
[April 11, 2007, 1:01]
Collaborative Signal Reinforcement in Sensor Networks
White Papers This paper presents a collaborative signal reinforcement scheme for sensor networks in which a cluster of mobile, independent and interchangeable nodes collaborate to send a message to a distant node.
[August 23, 2007, 1:00]
ThinkPad Digital Signal Processor
Downloads ThinkPad Digital Signal Processor
[November 8, 1999, 7:00]
The Power Line Transmission Characteristics for an OFDM Signal
White Papers This paper measures what influence the sinusoidal transmission characteristics of the electric power line with various forms gave to the transmission characteristic of OFDM (Orthogonal Frequency Division Multiplexing) signal through PLC (Power...
[April 11, 2007, 1:01]
CS Signal Monitor
Downloads CS Signal Monitor displays a signal meter for your AirPort connection that can be positioned anywhere on your screen and is always visible. Instead of keeping the AirPort application open all the time or relying on the less than precise AirPort...
[May 8, 2003, 8:00]
Signal
Downloads Signal turns your iPhone or iPod touch into an advanced wireless remote control for iTunes on your Mac. Control playback, browse or search your media library, and edit playlists from anywhere in the house - all from the palm of your hand.
[September 9, 2009, 3:57]
