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
More filters
•
31 Oct 2005TL;DR: In this paper, a method for communicating a plurality of data streams between a transmitting device with multiple transmit antennas and a receiving device, is disclosed, which comprises determining a set of power weighting, efficiently quantizing the power weightings, and providing the set of weightings the transmitting device, and an additional aspect of the invention is a means of determining the best codebook weights by combining the maximum power and maximum capacity criteria.
Abstract: A method for communicating a plurality of data streams between a transmitting device with multiple transmit antennas and a receiving device, is disclosed. The method comprises determining a set of power weightings, efficiently quantizing the power weightings, and providing the set of power weightings the transmitting device. Another aspect of the invention comprises the transmitter implicitly signaling the number of data streams which the receiver should feedback information for through the amount of feedback requested. An additional aspect of the invention is a means of determining the best codebook weights by combining the maximum power and maximum capacity criteria.
258 citations
••
17 Mar 2000TL;DR: Simulations verify that the two-branch transmitter diversity system achieves a diversity gain equivalent to that of the optimal maximal ratio combining (MRC) receiver diversity system.
Abstract: A simple space-time coded orthogonal frequency division multiplexing (OFDM) transmitter diversity technique for wireless communications over frequency selective fading channels is presented. The proposed technique utilizes OFDM to transform frequency selective fading channels into multiple flat fading subchannels on which space-time coding is applied. A two-branch transmitter diversity system is implemented without bandwidth expansion and with a small increase in complexity beyond that of a conventional OFDM system. Simulations verify that the two-branch transmitter diversity system achieves a diversity gain equivalent to that of the optimal maximal ratio combining (MRC) receiver diversity system.
258 citations
•
06 Feb 1991TL;DR: In this paper, a semiconductor device having both bottom-side contacts and peripheral contacts is mounted on a leadframe, where the first contact portion of the leads are partially exposed on the bottom surface of the package body.
Abstract: A semiconductor device having both bottom-side contacts and peripheral contacts provides surface mounting options. In one form, a semiconductor device die is positioned at a die receiving area of a leadframe. The leadframe also has a plurality of leads, each lead having a first and a second contact portion which are separated by an intermediate portion. A package body encapsulates the semiconductor device die and intermediate portions of the plurality of leads. The first contact portions of the leads are partially exposed on the bottom surface of the package body. The second contact portions extend from the package body along a portion of the package body perimeter. The first contact portions provide bottom-side contacts to the device, while the second contact portions provide peripheral contacts. The second contact portions are shaped into a desired lead configuration or are severed to establish a leadless device.
258 citations
•
02 Jul 1992TL;DR: In this paper, a low-cost manufacturing method is used to fabricate a small multiple chip semiconductor device (10), in which a first pattern of conductive traces (14) is formed on one surface of a substrate (12), and a second pattern of traces (16) is created on a second surface of the substrate(12).
Abstract: A low cost manufacturing method is used to fabricate a small multiple chip semiconductor device (10). In one embodiment, a first pattern of conductive traces (14) is formed on one surface of a substrate (12), and a second pattern of traces (16) is formed on a second surface of the substrate (12). A first semiconductor die (20) is interconnected to the first traces (14), and a package body (24) is formed around the first die and a portion of the traces. A second semiconductor die (26) is interconnected to the second traces (16) on the second surface. A second package body (28) is formed around the second die and a portion of the traces (16). Solder balls (32) are coupled to exposed portions of the second traces (16) around the perimeter of the package body (28) to establish external power and ground connections to each die. Edge leads (36) are externally soldered to the traces (14 & 16) around the periphery of the substrate (12) to establish remaining electrical connections.
258 citations
•
23 Apr 1990TL;DR: In this article, a battery type detector for battery-using and battery-charging equipment is presented, and operational characteristics of the using and charging equipment are modified in accordance with the battery type detected.
Abstract: A battery type detector for battery-using and battery-charging equipment is disclosed. Operational characteristics of the using and charging equipment is modified in accordance with the battery type detected.
257 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 |