Institution
Motorola
Company•Schaumburg, Illinois, United States•
About: Motorola is a company organization based out in Schaumburg, Illinois, United States. It is known for research contribution in the topics: Signal & Communications system. The organization has 27298 authors who have published 38274 publications receiving 968710 citations. The organization is also known as: Motorola, Inc. & Galvin Manufacturing Corporation.
Papers published on a yearly basis
Papers
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24 Sep 2002TL;DR: In this article, a portable device (100) communicates with a short range wireless local area network (114) and a wide area communication system (116) using location sensitive information request.
Abstract: A portable device (100) communicates with a short range wireless local area network (114) and a wide area communication system (116). The portable device (100) receives a location data from the short range wireless local area network (114). The portable device (100) generates a location sensitive information request to the wide area communication system (116) including the location data received from the short range wireless local area network (114).
164 citations
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26 Apr 1991TL;DR: In this article, a method for producing a 3D plastic article having an insert was proposed, where the insert is placed onto the partially formed article and the remainder of the article is formed by selectively exposing additional portions of the surface (16) of the liquid polymer to the laser beam, creating successive layers, whereupon a plurality of the layers form the completed 3D article.
Abstract: A method for producing a three dimensional plastic article having an insert. The three dimensional plastic article (20) is formed by exposing a liquid photopolymer or other material (14) capable of selective solidification or curing to a source of energy (10), preferably a laser beam (30). A portion of the three dimensional plastic article is formed by selectively exposing portions of the surface (12) of the liquid photopolymer to the laser beam. The insert (26) is placed onto the partially formed article (20), and the remainder of the article is formed by selectively exposing additional portions of the surface (16) of the liquid polymer to the laser beam, creating successive layers, whereupon a plurality of the layers form the three dimensional article (20). The insert (26) becomes an integral part of the completed three-dimensional article.
164 citations
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14 Dec 1992TL;DR: In this article, a base station (21, 22, 23) comprises a channel allocator (62) for allocating communication channels by accessing a Preferred Channel List (PCL) (64), which ranks channels (116) in accordance with the occurrence of prior events on the channels (112), such as interrupted calls, blocked call setup requests, and calls successfully completed (106), and in regards to the mean quality margin (110) and the current channel quality (114).
Abstract: A base station (21, 22, 23) in a radio communication system (20) comprises a channel allocator (62) for allocating communication channels by accessing a Preferred Channel List (PCL) (64). The PCL ranks channels (116) in accordance with the occurrence of prior events on the channels (112), such as interrupted calls (122), blocked call setup requests (118), and calls successfully completed (106) and in regards to the mean quality margin (110) and the current channel quality (114). The channel allocator (62) allocates (140) the first available channel (128) in the PCL having a free timeslot (132) and with good current channel quality (136).
164 citations
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TL;DR: An analytical model is built to derive an average delay estimate for the traffic of different priorities in the unsaturated 802.11e WLAN, showing that the QoS requirements of the real-time traffic can be satisfied if the input traffic is properly regulated.
Abstract: In the emerging IEEE 802.11e MAC protocol, the enhanced distributed channel access (EDCA) is proposed to support prioritized QoS; however, it cannot guarantee strict QoS required by real-time services such as voice and video without proper network control mechanisms. To overcome this deficiency, we first build an analytical model to derive an average delay estimate for the traffic of different priorities in the unsaturated 802.11e WLAN, showing that the QoS requirements of the real-time traffic can be satisfied if the input traffic is properly regulated. Then, we propose two effective call admission control schemes and a rate control scheme that relies on the average delay estimates and the channel busyness ratio, an index that can accurately represent the network status. The key idea is, when accepting a new real-time flow, the admission control algorithm considers its effect on the channel utilization and the delay experienced by existing real-time flows, ensuring that the channel is not overloaded and the delay requirements are not violated. At the same time, the rate control algorithm allows the best effort traffic to fully use the residual bandwidth left by the real-time traffic, thereby achieving high channel utilization
164 citations
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12 Jan 1998TL;DR: In this article, the authors proposed a method for combining a plurality of antenna output signals to provide a combined data signal in a communication system where the antennas receive at least one user signal and where the at least user signal contains pilot symbols and data symbols.
Abstract: The present invention provides a method, device, base station and subscriber unit for combining a plurality of antenna output signals to provide a combined data signal in a communication system where the antennas receive at least one user signal and where the at least one user signal contains pilot symbols and data symbols. The method includes the steps of: forming, in at least one communications receiver, a plurality of weighted antenna output signals, one for each antenna of a plurality of antennas, based on at least two covariance matrices and at least two steering vectors determined from the pilot symbols; and combining the weighted antenna output signals from the plurality of antennas to form the combined data signal.
164 citations
Authors
Showing all 27298 results
Name | H-index | Papers | Citations |
---|---|---|---|
Georgios B. Giannakis | 137 | 1321 | 73517 |
Yonggang Huang | 136 | 797 | 69290 |
Chenming Hu | 119 | 1296 | 57264 |
Theodore S. Rappaport | 112 | 490 | 68853 |
Chang Ming Li | 97 | 896 | 42888 |
John Kim | 90 | 406 | 41986 |
James W. Hicks | 89 | 406 | 51636 |
David Blaauw | 87 | 750 | 29855 |
Mark Harman | 83 | 506 | 29118 |
Philippe Renaud | 77 | 773 | 26868 |
Aggelos K. Katsaggelos | 76 | 946 | 26196 |
Min Zhao | 71 | 547 | 24549 |
Weidong Shi | 70 | 528 | 16368 |
David Pearce | 70 | 342 | 25680 |
Douglas L. Jones | 70 | 512 | 21596 |