2007 search results - page 135 / 402 » SPECTRUM |
112
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ICC
2007
IEEE
15 years 10 months ago
2007
IEEE
—The discrepancy between perceived spectrum shortage from the FCC allocation map and the actual abundance of available spectrum is a motivation for Cognitive Radios, which locate...
123
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ICCCN
2007
IEEE
15 years 10 months ago
2007
IEEE
To improve spectrum efficiency, future wireless devices will use cognitive radios to dynamically access spectrum. While offering great flexibility and softwarereconfigurability...
ISCAS
2007
IEEE
15 years 10 months ago
2007
IEEE
Abstract—This paper presents a ultra low-power, lowcomplexity circuit to generate the monocycle pulse for Impulse Radio UWB (IR-UWB) applications. A 7th order derivative Gaussian...
88
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VTC
2007
IEEE
15 years 10 months ago
2007
IEEE
—The Gaussian quadrature rules (GQRs) are used to construct a wireless fading simulator based on the popular sum of sinusoids (SoS) method. The general statistics of the proposed...
127
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ICMCS
2006
IEEE
15 years 10 months ago
2006
IEEE
This paper investigates postfiltering for residual echo suppression in networks employing low-bit-rate speech compression in the echo path. Simulations show that the residual echo...