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693
Zero-forcing methods for downlink spatial multiplexing in multiuser MIMO channels
- IEEE TRANS. SIGNAL PROCESSING
, 2004
"... The use of space-division multiple access (SDMA) in the downlink of a multiuser multiple-input, multiple-output (MIMO) wireless communications network can provide a substantial gain in system throughput. The challenge in such multiuser systems is designing transmit vectors while considering the co-c ..."
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Cited by 371 (29 self)
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that generalizes the two algorithms to cases involving more receive than transmit antennas. While the proposed algorithms are suboptimal, they lead to simpler transmitter and receiver structures and allow for a reasonable tradeoff between performance and complexity.
Low Complexity Rake Receivers in Ultra-Wideband Channels
- IEEE Trans. Wireless Commun
, 2007
"... One of the major issues for the design of ultra-wideband (UWB) receivers is the need to recover the signal energy dispersed over many multipath components, while keeping the receiver complexity low. To this aim we consider two schemes for reduces-complexity UWB Rake receivers, both of which combine ..."
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Cited by 23 (1 self)
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channels the performance of the simpler PRake receiver is almost as food as that of the SRake receiver, even for a small number of fingers. In sparse channels, however, the SRake outperforms the PRake significantly. We also show that for a fixed transmitted energy there is an optimum transmission bandwidth.
P-Rake Receivers in Different Measured WBAN Hospital Channels
"... Abstract—In wireless applications, power consumption has been, and will be, one of the important characteristics when designing any wireless device. This is the case especially in sensor networks where a single sensor may be functioning, hopefully for very long time, without external power source. G ..."
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Cited by 1 (0 self)
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. Generally, the architecture complexity reduces the battery life, but the performance increases with complexity. The best performance is achieved with the most complex devices which, however, consume a lot of power. Rake receivers can offer a good tradeoff between complexity and performance. In the near
Direct-Conversion Radio Transceivers for Digital Communications
- IEEE Journal of Solid-State Circuits
, 1995
"... Abstract-Direct-conversion is an alternative wireless receiver architecture to the well-established superheterodyne, particularly for highly integrated, low-power terminals. Its fundamental ad-vantage is that the received signal is amplified and filtered at baseband rather than at some high intermed ..."
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Cited by 146 (3 self)
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Abstract-Direct-conversion is an alternative wireless receiver architecture to the well-established superheterodyne, particularly for highly integrated, low-power terminals. Its fundamental ad-vantage is that the received signal is amplified and filtered at baseband rather than at some high
On schemes of combinatorial transcription logic.
- Proc. Natl. Acad. Sci. USA
, 2003
"... Cells receive a wide variety of cellular and environmental signals, which are often processed combinatorially to generate specific genetic responses. Here we explore theoretically the potentials and limitations of combinatorial signal integration at the level of cisregulatory transcription control. ..."
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Cited by 141 (1 self)
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Cells receive a wide variety of cellular and environmental signals, which are often processed combinatorially to generate specific genetic responses. Here we explore theoretically the potentials and limitations of combinatorial signal integration at the level of cisregulatory transcription control
Handling Item-Level Missing Data: Simpler
"... The topic of missing data has been receiving increasing attention, with calls to apply advanced methods of handling missingness to counseling psychology research. The present study sought to assess whether advanced methods of handling item-level missing data performed equivalently to simpler methods ..."
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The topic of missing data has been receiving increasing attention, with calls to apply advanced methods of handling missingness to counseling psychology research. The present study sought to assess whether advanced methods of handling item-level missing data performed equivalently to simpler
Posterior parietal association cortex of the monkey: command functions for operations within extrapersonal
- In: Adaptive Processes in the Visual and Oculomotor Systems, edited by
, 1975
"... primates traditionally termed the association areas was differentiated early in experimental neurology from the primary motor and sensory areas. Association cortex is characterized by a eulaminate or heterotypical cytoarchitecture, thought by some to contain many structurally differentiated areas, b ..."
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Cited by 128 (3 self)
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is brought into conjunction with a hypothetical neural concomitant of “ideas” or concepts with the resulting perception of an object in the external world, as distinct from but additive to the simpler sensing of that object. The defects in the more complex aspects of sensation which occur in humans
Seismic Ray Theory
, 2001
"... Introduction T he propagation of seismic body waves in complex, laterally varying 3-D layered structures is a complicated process. Analytical solutions of the elastodynamic equations for such types of media are not known. The most common approaches to the investigation of seismic wavefields in such ..."
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Cited by 131 (4 self)
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are very general; they are applicable both to isotropic and anisotropic structures, to arbitrary 3-D variations of elastic parameters and density, to curved interfaces arbitrarily situated in space, to an arbitrary source-receiver configuration, and to very general types of waves. High-frequency asymptotic
A Simpler Max-Product Maximum Weight Matching Algorithm and the Auction Algorithm
- IEEE transactions on Information Theory
, 2008
"... Abstract — The max-product “belief propagation ” algorithm has received a lot of attention recently due to its spectacular success in many application areas such as iterative decoding, computer vision and combinatorial optimization. There is a lot of ongoing work investigating the theoretical proper ..."
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Cited by 7 (3 self)
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Abstract — The max-product “belief propagation ” algorithm has received a lot of attention recently due to its spectacular success in many application areas such as iterative decoding, computer vision and combinatorial optimization. There is a lot of ongoing work investigating the theoretical
An ECA Rule-Matching Service for Simpler Development of Reactive Applications
"... This paper describes the implementation of a CORBA-based EventCondition -Action (ECA) Rule Matching Service. This service complements the standard CORBA Notification Service with a Composite Event Matching Engine. The originality of this work resides on having leveraged on the pattern matching c ..."
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Cited by 2 (0 self)
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and extends it with suitable features for event correlation. An ECA Server receives ECA rule subscriptions from clients, maps them to CLIPS, and delegates the rule-based event correlation process to an embedded CLIPS inference engine. CORBA Structured Events received by the ECA Server are mapped
Results 1 - 10
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693