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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31 Oct 1994TL;DR: In this article, a portable device (55) has a first receiver (62) for receiving a paging signal (40-52) from a Paging system (10), and a second receiver (72) receives area identification signals (20-26) from another system.
Abstract: A portable device (55) has a first receiver (62) for receiving a paging signal (40-52) from a paging system (10). A second receiver (72) receives area identification signals (20-26) from a second system. The received paging signals may be stored in a memory (80) for later retrieval. A controller (75) examines the paging signals (40-52) and selects messages having a location signal (44, 50) matching a location of the device (55). The address of the device (66) may also be used to select the messages. Upon selection, an alert is generated by an alert means (82) and the message is annunciated on a display (84).
248 citations
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TL;DR: It is proved that the control packet overhead scales linearly with node speed and as N3/2 with increasing number of nodes and these results indicate that the protocol is well suited to relatively large ad hoc networks where nodes travel at high speed.
Abstract: In this paper we present a scalable routing protocol for ad hoc networks. The protocol is based on a geographic location management strategy that keeps the overhead of routing packets relatively small. Nodes are assigned home regions and all nodes within a home region know the approximate location of the registered nodes. As nodes travel, they send location update messages to their home regions and this information is used to route data packets. In this paper, we derive theoretical performance results for the protocol and prove that the control packet overhead scales linearly with node speed and N3/2 with increasing number of nodes. These results indicate that our protocol is well suited to relatively large ad hoc networks where nodes travel at high speed. Finally, we use simulations to validate our analytical model.
247 citations
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18 Jul 1994TL;DR: In this article, the first and second modes of operation controlled by a moveable flap are discussed, where the first mode of operation provides two way voice communication when the flap is in a closed position and the second mode provides a personal organizer when it is in an open position.
Abstract: A handset (100) has first and second modes of operation controlled by a moveable flap (104). The first mode of operation provides two way voice communication when the moveable flap (104) is in a closed position. The second mode of operation provides a personal organizer when the flap (104) is in a open position.
247 citations
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27 Mar 1997TL;DR: In this paper, the authors proposed a method for determining the location of the mobile station based on the first and second delays of a mobile signal transmitted from a mobile station to a fixed mobile station.
Abstract: The method includes receiving (404) by a first base station (212) a signal (215) transmitted from the mobile station (216); demodulating (406) the signal by the first base station (212) to form a demodulated signal; remodulating (408) at least a portion of the demodulated signal to form a reference signal; receiving (412) by the first base station (212) and a second base station (210, 214) a retransmitted signal (217); comparing (414, 416), by the first base station (212), the retransmitted signal (217) with the reference signal to determine a first delay; comparing (414, 416), by the second base station (210, 214), the retransmitted second signal (217) with the reference signal to determine a second delay; and based on the first and second delays, determining (420) a location of the mobile station (216).
247 citations
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TL;DR: In this paper, two EMI source mechanisms have been identified: one associated with a differential-mode voltage and another associated with differential mode current, both of which result in a common-mode current on an attached cable.
Abstract: Fundamental EMI source mechanisms leading to common-mode radiation from printed circuit boards with attached cables are presented in this paper. Two primary EMI source mechanisms have been identified: one associated with a differential-mode voltage and another associated with a differential-mode current, both of which result in a common-mode current on an attached cable. These mechanisms can he used to relate printed circuit layout geometries to EMI sources. The two mechanisms are demonstrated through numerical and experimental results, and an example from a production printed-circuit design is presented.
246 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 |