Resumes
Resumes
Enrique Laborde Phones & Addresses
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9 Treworthy Rd, Gaithersburg, MD 20878 (301) 340-2512
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Raleigh, NC
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7925 Jones Branch Dr, Mc Lean, VA 22102
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9 Treworthy Rd, Gaithersburg, MD 20878
Publications
Us Patents
System And Method For A Wide Area Wireless Personal Communication System Incorporating Advanced Messaging
View pageUS Patent:
6658250, Dec 2, 2003
Filed:
Jan 5, 1996
Appl. No.:
08/583357
Inventors:
Kalyan Ganesan - Germantown MD
Enrique Laborde - Gaithersburg MD
Enrique Laborde - Gaithersburg MD
Assignee:
Hughes Electronics Corporation - El Segundo CA
International Classification:
H04Q 720
US Classification:
45542601, 340 71, 455458
Abstract:
A system and method for integrating advanced messaging capabilities in a wide area wireless personal communications system is provided. The system includes personal transceiver units capable of communicating with one or more of a plurality of long range pagers. The transceiver and long range pager use existing frequencies and formats of the wireless personal communications system. The method provides for registering a personal transceiver in a two way messaging service area of the wireless personal communications system.
System And Method For Performing Joint Trellis Coded Modulation (Tcm) With Multi-Circular Constellations On Data Being Transmitted Over Nonlinear Channels
View pageUS Patent:
20020108085, Aug 8, 2002
Filed:
Oct 23, 2001
Appl. No.:
10/053395
Inventors:
Mustafa Eroz - Germantown MD, US
Enrique Laborde - Gaithersburg MD, US
Enrique Laborde - Gaithersburg MD, US
International Classification:
H03M013/00
US Classification:
714/758000, 714/790000
Abstract:
A system and method for performing joint trellis coded modulation (TCM) with multi-circular constellations on data being transmitted over nonlinear channels without incurring substantial losses in transmission power. The system and method each employs a first constituent encoder, such as a convolutional encoder, adapted to encode the data to output first encoded data, an interleaver, adapted to interleave the data to produce interleaved data, and a second constituent encoder, such as a convolutional encoder, adapted to encode the interleaved data to output second encoded data. The system and method each further employs a modulator, adapted to modulate the first and second encoded data in accordance with modulation symbols mapped in a multi-circular constellation, to reduce power loss during transmission of the modulated first and second encoded data over a non-linear channel. The multi-circular constellation can includes two concentric circles, each having different radii, with a number of the symbols in one of the circles being different from a number of the symbols in the other circle. The system and method each further employs a deinterleaver, adapted to deinterleave the second encoded data after the second encoded data has been modulated by the modulator, and a puncturer, adapted to puncture the first and second modulated encoded data.
Systems And Methods For Transmitting Internet Protocol Data Via Satellite
View pageUS Patent:
20040120349, Jun 24, 2004
Filed:
Nov 7, 2003
Appl. No.:
10/705164
Inventors:
John Border - Poolesville MD, US
Martin Moseley - Fareham, GB
Enrique Laborde - Gaithersburg MD, US
Frank Kelly - Walkersville MD, US
Roger Hammons - N. Potomac MD, US
Mustafa Eroz - Germantown MD, US
Martin Moseley - Fareham, GB
Enrique Laborde - Gaithersburg MD, US
Frank Kelly - Walkersville MD, US
Roger Hammons - N. Potomac MD, US
Mustafa Eroz - Germantown MD, US
Assignee:
HUGHES ELECTRONICS
International Classification:
H04B007/212
H04L012/28
H04L012/56
H04L012/28
H04L012/56
US Classification:
370/474000, 370/401000, 370/321000
Abstract:
A system for transmitting data packets over an air interface includes a logic device and a transmitter. The logic device receives data packets from a user device and encodes the data packets using a turbo coding scheme. The logic device may then modulate the turbo coded data and forward the modulated data to a transmitter. The transmitter may then transmit the modulated data to a satellite over the air interface.
Integrated Personal/Cellular Communications System Architecture
View pageUS Patent:
53032870, Apr 12, 1994
Filed:
Aug 13, 1992
Appl. No.:
7/929603
Inventors:
Enrique Laborde - Gaithersburg MD
Assignee:
Hughes Aircraft Company - Los Angeles CA
International Classification:
H04B 7204
US Classification:
379 59
Abstract:
An integrated PCN/DCN system architecture has a switching center, coupled to a public switched telephone network (PSTN), which selectively transfers signals between the PSTN and a digital cellular network (DCN) or a personal communications network (PCN) which is allocated a portion of the cellular communications band by a local cellular operator. Each PCN subnetwork of the PCN includes several microcells arranged in a multi-dimensional grid, and the allocated cellular channels are divided into sets assigned to columns of the grid. The allocated portion of the cellular spectrum is reused within each PCN subnetwork by assigning the same set to more than one of the columns so that different communications signals can be transferred over the same cellular channels.
Medium Access Control For A Mobile Satellite System
View pageUS Patent:
56895682, Nov 18, 1997
Filed:
Jun 29, 1995
Appl. No.:
8/496327
Inventors:
Enrique Laborde - Gaithersburg MD
Assignee:
Hughes Electronics - Los Angeles CA
International Classification:
H04B 7204
US Classification:
380 49
Abstract:
The present invention provides a medium access control (MAC) layer in a mobile satellite system. The MAC transfers data across the physical channels in the air interface between the mobile terminals, the satellite and the gateways. The MAC of the present invention optimizes for satellite propogation delays and hides the physical transmission media from higher network layers.
Power Control For Tdma Mobile Satellite Communication System
View pageUS Patent:
57909407, Aug 4, 1998
Filed:
Jul 18, 1997
Appl. No.:
8/896337
Inventors:
Enrique Laborde - Gaithersburg MD
James Eryx Malcolm - Bethesda MD
Robert Carroll Marquart - Germantown MD
Adrian Morris - Gaithersburg MD
James Eryx Malcolm - Bethesda MD
Robert Carroll Marquart - Germantown MD
Adrian Morris - Gaithersburg MD
Assignee:
Hughes Electronics Corporation - El Segundo CA
International Classification:
H04B 100
H04B 700
H04B 700
US Classification:
455 69
Abstract:
A method and system for adjusting the transmission power of a transmitter during a communication with a receiver in a mobile satellite communication system is disclosed herein. The method comprises establishing at least one threshold signal strength value for a transmitted burst; measuring the received signal strength of the burst received by the receiver; comparing the received signal strength with the threshold value; and setting a power control bit based on the comparison. The system comprises a plurality of mobile terminals having a first stored threshold value; a satellite adapted to communicate with each of the mobile terminals; at least one gateway in communication with the satellite, the gateway having a second stored threshold value, and including a routine for measuring the received signal strength of a burst signal transmitted from the mobile terminal, for comparing the received signal strength with the second stored threshold value, and for adjusting the transmission power of the gateway based on the comparison; and each of the mobile terminals including a routine for measuring the received signal strength of a burst signal transmitted from the gateway to the mobile terminals, for comparing the received signal strength with the first stored threshold value, and for adjusting the transmission power of the mobile terminal based on the comparison.
Power Control For Tdma Mobile Satellite Communication System
View pageUS Patent:
57109826, Jan 20, 1998
Filed:
Jun 29, 1995
Appl. No.:
8/496633
Inventors:
Enrique Laborde - Gaithersburg MD
James Eryx Malcolm - Bethesda MD
Robert Carroll Marquart - Germantown MD
Adrian Morris - Gaithersburg MD
James Eryx Malcolm - Bethesda MD
Robert Carroll Marquart - Germantown MD
Adrian Morris - Gaithersburg MD
Assignee:
Hughes Electronics - Los Angeles CA
International Classification:
H04B 100
H04B 700
H04B 700
US Classification:
455 69
Abstract:
A method and system for adjusting the transmission power of a transmitter during a communication with a receiver in a mobile satellite communication system is disclosed herein. The method comprises establishing at least one threshold signal strength value for a transmitted burst; measuring the received signal strength of the burst received by the receiver; comparing the received signal strength with the threshold value; and setting a power control bit based on the comparison. The system comprises a plurality of mobile terminals having a first stored threshold value; a satellite adapted to communicate with each of the mobile terminals; at least one gateway in communication with the satellite, the gateway having a second stored threshold value, and including a routine for measuring the received signal strength of a burst signal transmitted from the mobile terminal, for comparing the received signal strength with the second stored threshold value, and for adjusting the transmission power of the gateway based on the comparison; and each of the mobile terminals including a routine for measuring the received signal strength of a burst signal transmitted from the gateway to the mobile terminals, for comparing the received signal strength with the first stored threshold value, and for adjusting the transmission power of the mobile terminal based on the comparison.
Multiprotocol Mobile Telephone Network Having High Tier And Low Tier Systems
View pageUS Patent:
58571540, Jan 5, 1999
Filed:
Jul 16, 1996
Appl. No.:
8/680896
Inventors:
Enrique Laborde - Gaithersburg MD
Lenard S. Golding - Potomac MD
Lenard S. Golding - Potomac MD
Assignee:
Hughes Electronics Corporation - Los Angeles CA
International Classification:
H04Q 722
US Classification:
455444
Abstract:
A multiprotocol radio communications network that includes a first plurality of stationary transceivers for handling low-tier traffic and a second plurality of stationary transceivers for handling high-tier traffic. The stationary transceivers communicate information to a mobile transceiver at different information rates. A switching center automatically switches communication between the mobile transceiver and the stationary transceivers as the mobile transceiver moves between areas of different traffic density.