Tools
Sorted by:
Try your query at:
 |
 |
 |
 |
 |
 |
Results 11 - 20
of
772
Space-Time Coding For Multiuser Ultra-Wideband Communications
"... In this paper, we present the construction of full rate, fully diverse and totally real space-time (ST) codes for ultra-wideband (UWB) transmissions. In particular, we construct two families of codes adapted to real carrier-less UWB communications that employ Pulse Position Modulation (PPM), Pulse A ..."
Abstract
-
Cited by 1 (0 self)
- Add to MetaCart
In this paper, we present the construction of full rate, fully diverse and totally real space-time (ST) codes for ultra-wideband (UWB) transmissions. In particular, we construct two families of codes adapted to real carrier-less UWB communications that employ Pulse Position Modulation (PPM), Pulse
Cooperative Ultra-wideband Communication System BAPTISTE CASTEL
, 2009
"... Ultra-wideband (UWB) system transmit signals with very low power spec-trum density and very large bandwidth, however, the distance of the com-munication link is limited since UWB signal may interfere with other legacy systems. Exploiting the fine spatial resovability of the short pulse, UWB system c ..."
Abstract
- Add to MetaCart
Ultra-wideband (UWB) system transmit signals with very low power spec-trum density and very large bandwidth, however, the distance of the com-munication link is limited since UWB signal may interfere with other legacy systems. Exploiting the fine spatial resovability of the short pulse, UWB system
Ultra-Wideband Communication Systems: Technology and Applications
- EURASIP JOURNAL ON WIRELESS COMMUNICATIONS AND NETWORKING
, 2006
"... ..."
Modelling of a Time-Modulated Ultra-Wideband Communication Link”,
- 42, ISSN Print: 0976- 6464, ISSN Online:
, 2013
"... ABSTRACT The ultra-wideband communication technique involves the use of very large bandwidths and low spectral densities for information transmission. Time-modulated ultrawideband (TM UWB) is an impulse-based ultra-wideband scheme that provides a direct means of increasing transmission bandwidth, t ..."
Abstract
-
Cited by 2 (0 self)
- Add to MetaCart
ABSTRACT The ultra-wideband communication technique involves the use of very large bandwidths and low spectral densities for information transmission. Time-modulated ultrawideband (TM UWB) is an impulse-based ultra-wideband scheme that provides a direct means of increasing transmission bandwidth
CLOSED-FORM UPPER BOUNDS FOR THE CONSTELLATION-CONSTRAINED CAPACITY OF ULTRA-WIDEBAND COMMUNICATIONS
"... This paper1 focuses on the evaluation of performance limits for ultra-wideband communications in terms of constellation-constrained ca-pacity. The major drawback of most of the existing capacity mea-sures is that an exact and closed-form expression cannot be easily obtained. As a result, evaluation ..."
Abstract
- Add to MetaCart
This paper1 focuses on the evaluation of performance limits for ultra-wideband communications in terms of constellation-constrained ca-pacity. The major drawback of most of the existing capacity mea-sures is that an exact and closed-form expression cannot be easily obtained. As a result, evaluation
Channel uncertainty in ultra wideband communication systems
- IEEE Transactions on Information Theory
, 2005
"... Abstract—Channel uncertainty limits the achievable data rates of certain ultra-wideband systems due to the need to estimate the channel. The use of bursty duty-cycled transmission reduces the channel uncertainty because the receiver has to estimate the channel only when transmission takes place, but ..."
Abstract
-
Cited by 18 (8 self)
- Add to MetaCart
Abstract—Channel uncertainty limits the achievable data rates of certain ultra-wideband systems due to the need to estimate the channel. The use of bursty duty-cycled transmission reduces the channel uncertainty because the receiver has to estimate the channel only when transmission takes place
Symbol Timing Estimation in Ultra Wideband Communications
- IN PROC. IEEE ASILOMAR CONF. SIGNALS SYST. COMP
, 2002
"... This paper takes on a cyclostationary approach to recover timing of ultra-wideband (UWB) transmissions over rich multipath environments. It is demonstrated that timing dependent cyclic statistics exist without resorting to oversampling, due to the symbol repetition pattern inherent to UWB modulation ..."
Abstract
-
Cited by 17 (6 self)
- Add to MetaCart
This paper takes on a cyclostationary approach to recover timing of ultra-wideband (UWB) transmissions over rich multipath environments. It is demonstrated that timing dependent cyclic statistics exist without resorting to oversampling, due to the symbol repetition pattern inherent to UWB
A SOFTWARE DEFINED ULTRA WIDEBAND COMMUNICATION SYSTEM
"... Software Defined Radios (SDR) have the potential of changing the fundamental usage model of wireless communications devices, but the capabilities of these transceivers are often limited by the speed of the underlying ADCs, DSPs, and FPGAs. A SDR receiver provides tremendous flexibility and rapid pro ..."
Abstract
- Add to MetaCart
, state-of-the-art Impulse Ultra Wideband (UWB) communication systems are composed of custom-developed hardware, and do not use SDR architectures. Several major challenges are involved in developing such a communication system— such systems require extremely high sampling rates, generate huge amounts
Results 11 - 20
of
772
