Source: http://www.google.com/patents/US8130693?dq=7222078
Timestamp: 2017-06-24 05:43:33
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Matched Legal Cases: ['Application No. 60', 'Application No. 60', 'Application No. 60', 'Application No. 60', 'Application No. 60', 'Application No. 60', 'Application No. 60', 'Application No. 60', 'Application No. 60', 'Application No. 60', 'Application No. 60', 'Application No. 60', 'Application No. 60', 'Application No. 60', 'Application No. 60', 'Application No. 60', 'Application No. 60', 'Application No. 60', 'Application No. 60', 'Application No. 60', 'Application No. 60', 'Application No. 60', 'Application No. 60']

Patent US8130693 - MIMO satellite system - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign inPatentsA satellite communication system is disclosed that utilizes multiple antenna for subscriber terminals to process streams. A first node relays a first stream between the ground station and the subscriber terminals. A second node relays the second lower information rate signal to the subscriber terminals....http://www.google.com/patents/US8130693?utm_source=gb-gplus-sharePatent US8130693 - MIMO satellite systemAdvanced Patent SearchTry the new Google Patents, with machine-classified Google Scholar results, and Japanese and South Korean patents.Publication numberUS8130693 B2Publication typeGrantApplication numberUS 11/971,852Publication dateMar 6, 2012Filing dateJan 9, 2008Priority dateJan 9, 2007Fee statusPaidAlso published asUS7974571, US8005034, US20080247351, US20080261522, US20090034448, WO2008086414A2, WO2008086414A3, WO2008086415A1, WO2008086416A2, WO2008086416A3Publication number11971852, 971852, US 8130693 B2, US 8130693B2, US-B2-8130693, US8130693 B2, US8130693B2InventorsMark J. Miller, Thomas Eidenschink, Aniruddha DasOriginal AssigneeViasat, Inc.Export CitationBiBTeX, EndNote, RefManPatent Citations (60), Non-Patent Citations (16), Referenced by (8), Classifications (10), Legal Events (3) External Links: USPTO, USPTO Assignment, EspacenetMIMO satellite system
U.S. Provisional Patent Application No. 60/884,143, filed Jan. 9, 2007 entitled “MIMO Satellite Subscriber Terminal”; Client Reference No. VS-0215); U.S. Provisional Patent Application No. 60/884,134, filed Jan. 9, 2007 entitled “Dynamic Switching Between Antennas”; Client Reference No. VS-0216); U.S. Provisional Patent Application No. 60/884,146, filed Jan. 9, 2007 entitled “Antenna Configuration for Wireless Multipath Signal Reception of Satellite Signals”; Client Reference No. VS-0217); U.S. Provisional Patent Application No. 60/884,142, filed Jan. 9, 2007 entitled “MIMO Antenna with Gain on Horizon for Satellite Communications”; Client Reference No. VS-0218); U.S. Provisional Patent Application No. 60/884,153, filed Jan. 9, 2007 entitled “Satellite Terrestrial Hybrid with Additional Content on Terrestrial”; Client Reference No. VS-0219); U.S. Provisional Patent Application No. 60/884,190, filed Jan. 9, 2007 entitled “Use of Different Coding and Modulation for Satellite MIMO”; Client Reference No. VS-0220); U.S. Provisional Patent Application No. 60/884,181, filed Jan. 9, 2007 entitled “Satellite Terrestrial Hybrid Using Same Frequency and MIMO”; Client Reference No. VS-0221); U.S. Provisional Patent Application No. 60/884,180, filed Jan. 9, 2007 entitled “Two Satellites on Same Frequency to MIMO Subscriber Terminals”; Client Reference No. VS-0222); U.S. Provisional Patent Application No. 60/884,150, filed Jan. 9, 2007 entitled “Coordinated Multiple Antenna Array for MIMO Communication with Satellite and Terrestrial Signals”; Client Reference No. VS-0223); U.S. Provisional Patent Application No. 60/884,152, filed Jan. 9, 2007 entitled “Multi-Antenna System with Wireless Interface to Vehicle”; Client Reference No. VS-0224); U.S. Provisional Patent Application No. 60/884,139, filed Jan. 9, 2007 entitled “Dynamic Switching between Different Sets of Antennas and Associated Subscriber Terminals”; Client Reference No. VS-0225); U.S. Provisional Patent Application No. 60/884,147, filed Jan. 9, 2007 entitled “Base Station Reduction in Mobile Satellite Systems”; Client Reference No. VS-0226); U.S. Provisional Patent Application No. 60/884,182, filed Jan. 9, 2007 entitled “Delay Tolerant MIMO Using Rolling Pilots”; Client Reference No. VS-0227); U.S. Provisional Patent Application No. 60/884,130, filed Jan. 9, 2007 entitled “Directional Analog Beam Forming”; Client Reference No. VS-0231); U.S. Provisional Patent Application No. 60/884,188, filed Jan. 9, 2007 entitled “Switch Transceiver Between One MIMO or n Independent SISO”; Client Reference No. VS-0232); U.S. Provisional Patent Application No. 60/884,140, filed Jan. 9, 2007 entitled “MIMO Antenna with Polarization Diversity for Satellite Communications”; Client Reference No. VS-0233); U.S. Provisional Patent Application No. 60/884,137, filed Jan. 9, 2007 entitled “Scalable Satellite Deployment”; Client Reference No. VS-0234); U.S. Provisional Patent Application No. 60/884,156, filed Jan. 9, 2007 entitled “Signal Processing for Diverse Antenna Elements”; Client Reference No. VS-0235); U.S. Provisional Patent Application No. 60/884,136, filed Jan. 9, 2007 entitled “Signal Scanning for Determination of Dynamic Switching Between Antennas”; Client Reference No. VS-0236); U.S. Provisional Patent Application No. 60/884,138, filed Jan. 9, 2007 entitled “State Based Dynamic Switching Between Antennas”; Client Reference No. VS-0237); U.S. Provisional Patent Application No. 60/884,120, filed Jan. 9, 2007 entitled “Layered Space-Time Processing”; Client Reference No. VS-0229); U.S. Provisional Patent Application No. 60/884,210, filed Jan. 9, 2007 entitled “MIMO Mobile Satellite System”; Client Reference No. VS-0238); and U.S. Provisional Patent Application No. 60/956,113, filed Aug. 15, 2007 entitled “Satellite MIMO System”; Client Reference No. VS-0238-2). BACKGROUND
The physical layer between the satellite and the subscriber terminal operates in SIMO for the downlink and MISO for the uplink. MISO and SIMO are two degenerated cases of MIMO, where MISO has a single transmitter and SIMO has a single receiver. MISO and SIMO are two degenerated cases of MIMO, where MISO has a single transmitter with multiple receivers, and SIMO has a single receiver with multiple transmitters. Generally, MIMO involves multiple transmit and/or receive engines coupled to respective antennas. In various embodiments, the antennas are configured to have independent fading with a spacing distance of ¼, ½ or a full wavelength. The system 100 includes at least one of spatial multiplexing, transmit/receive diversity methods (e.g., space-time coding, code reuse multiple access, etc.), and/or beamforming technologies. Various embodiments can use any number or permutation of these features in implementing the system 100.
The phase and amplitude of signals sent by the satellites 105 can be modified to produce the beamforming with the two or more satellites 105. Simultaneously, the receiver acquires signals from both satellites 105-1, 105-2. The subscriber terminal 130 processes the signals twice for each receive antenna—first (potentially) nulling out the first satellite 105-1 and then (potentially) nulling out the second satellite 105-2. In this way, beamforming is used in a MIMO communications system 800.
In another embodiment, the spectrum could be reused a third time using two types of base stations. A first type of base station acts as a terrestrial repeater 165 for the satellite signals—again using MIMO processing to resolve the multiple signals. A second type of base station produces additional content instead of repeating the satellite link. The additional content could come from a wired, optical or wireless link to the network 120. One type of wireless link could be through a channel on the satellite 105.
A. MMSE Receivers—Same Content on Multiple Tx—Path Difference is an Integer Multiple of Symbol Time
where the M×1 vector r[n] contains the samples received at each of the M receive antennae after downsampling to symbol time. x[n] is the data symbol transmitted from the first transmit antenna at time n. The two antennas have a path difference which results in a delay of δ symbols. Here we have assumed that 6 is an integer number of symbols. Below, we develop a theory for the case when 6 is not an integer number of symbol times. H1 and H2 are the channel gains from the first and second transmitters respectively to the receiver array. Thus if there are M receive antenna, H1 and H2 are both M×1 complex vectors. We have assumed without loss of any generality that the first transmitter has a shorter path to the receiver.
C. MMSE Receivers—Same Content on Multiple Tx—Path Difference is not Integer Multiple of Symbol Time
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AgeePhysically secure digital signal processing for wireless M2M networksUS20100248663 *Feb 11, 2010Sep 30, 2010Fujitsu LimitedAntenna installation method in a multiple input multiple output communication methodUS20100284446 *Dec 16, 2009Nov 11, 2010Fenghao MuMethod and Apparatus for MIMO Repeater Chains in a Wireless Communication NetworkUS20110299630 *Sep 15, 2010Dec 8, 2011Entropic Communications, Inc.Method and Apparatus for Real Time Multiplexing with Receiver and Antenna Array Elements* Cited by examinerClassifications U.S. Classification370/316, 455/427International ClassificationH04B7/185, H04W4/00Cooperative ClassificationH04B7/18534, H04B7/1858, H04B7/0413, H04B7/18508European ClassificationH04B7/185S4, H04B7/185M4BLegal EventsDateCodeEventDescriptionFeb 8, 2008ASAssignmentOwner name: VIASAT, INC., A DELAWARE CORPORATION, CALIFORNIAFree format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:MILLER, MARK J.;EIDENSCHINK, THOMAS;DAS, ANIRUDDHA;REEL/FRAME:020483/0142;SIGNING DATES FROM 20080115 TO 20080201Owner name: VIASAT, INC., A DELAWARE CORPORATION, CALIFORNIAFree format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:MILLER, MARK J.;EIDENSCHINK, THOMAS;DAS, ANIRUDDHA;SIGNING DATES FROM 20080115 TO 20080201;REEL/FRAME:020483/0142May 9, 2012ASAssignmentOwner name: UNION BANK, N.A., CALIFORNIAFree format text: SECURITY AGREEMENT;ASSIGNOR:VIASAT, INC.;REEL/FRAME:028184/0152Effective date: 20120509Sep 7, 2015FPAYFee paymentYear of fee payment: 4RotateOriginal ImageGoogle Home - Sitemap - USPTO Bulk Downloads - Privacy Policy - Terms of Service - About Google Patents - Send FeedbackData provided by IFI CLAIMS Patent Services