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公开(公告)号：US20160191335A1
公开(公告)日：2016-06-30
申请号：US15063336
申请日：2016-03-07
Applicant: California Institute of Technology
Inventor： Michelle Effros , Tracey C. Ho , Ralf Koetter , Shirin Jalall
CPC classification number: H04L41/145 , H04L12/462 , H04L41/12 , H04L43/50 , H04L45/26 , H04W24/02
Abstract: Systems and methods for characterizing networks are disclosed. In several embodiments, a network analyzer applies a network analysis to a network that replaces components of the network in a model of the network with equivalent or bounding models. The network analyzer can then characterize the simplified model of the network and an assessment can be made concerning the accuracy of the characterization of the network.
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公开(公告)号：US20210255836A1
公开(公告)日：2021-08-19
申请号：US17155001
申请日：2021-01-21
Applicant: California Institute of Technology
Inventor： Shuqing Chen , Michelle Effros , Victoria Kostina
IPC: G06F8/30
Abstract: Systems and methods in accordance with various embodiments of the invention perform lossless source coding. In several embodiments, a nested code structure is utilized to perform Random Access Source Coding (RASC), where the number of active encoders is initially unknown. In several embodiments, the decoder can attempt to decode using a number of Slepian-Wolf decoders corresponding to an estimated number of sources. One embodiment includes multiple source encoders configured to receive a start message and transmit a portion of a codeword selected by encoding data from a source until an end of epoch message is received. A source decoder can transmit at least one start message, and receive codeword portions transmitted by the plurality of source encoders. When a decoding rule is satisfied, the source decoder can decode data from multiple source encoders based upon received codeword portions, and cause the broadcast transmitter to transmit an end of epoch message.
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公开(公告)号：US20210218499A1
公开(公告)日：2021-07-15
申请号：US17146462
申请日：2021-01-11
Applicant: California Institute of Technology
Inventor： Recep Can Yavas , Victoria Kostina , Michelle Effros
Abstract: Communication systems and methods in accordance with various embodiments of the invention employ a rateless coding strategy in which an encoder utilizes codewords located within a restricted subset of a multi-dimensional sphere. In one embodiment, a transmitter is configured to encode message data as symbols using a rateless code until an end of epoch message is received, where the rateless code comprises a set of codewords characterized in that they are located within a restricted subset of a multi-dimensional sphere. A receiver receives observed symbols and at each of a predetermined set of decode times, determines whether a decoding rule is satisfied. When the decoding rule is satisfied, the receiver decodes at least one message using the rateless code and transmits an end of epoch message.
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公开(公告)号：US11822902B2
公开(公告)日：2023-11-21
申请号：US17155001
申请日：2021-01-21
Applicant: California Institute of Technology
Inventor： Shuqing Chen , Michelle Effros , Victoria Kostina
Abstract: Systems and methods in accordance with various embodiments of the invention perform lossless source coding. Nested code structures are utilized to perform Random Access Source Coding (RASC), where the number of active encoders is initially unknown. Decoders can attempt to source decode using a number of Slepian-Wolf decoders corresponding to an estimated number of sources. Multiple source encoders are configured to receive start messages and transmit portions of codewords, selected by source encoding data from sources to remove redundancy, until an end of epoch message is received.
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公开(公告)号：US10951292B2
公开(公告)日：2021-03-16
申请号：US16258448
申请日：2019-01-25
Applicant: California Institute of Technology
Inventor： Michelle Effros , Victoria Kostina , Recep C. Yavas
Abstract: Systems and methods for random access communication in accordance with various embodiments of the invention are described in which receivers can handle uncoordinated transmissions of a large and unknown number of transmitters. Communication systems in accordance with many embodiments of the invention include a plurality of transmitters that encode message data as symbols using a rateless code. During transmission, the transmitters receive feedback messages at a predetermined set of potential decoding times until an end of epoch message is received. A receiver transmits at least one start of epoch message and, at each of a predetermined set of decoding times, determines whether a decoding rule is satisfied. When the decoding rule is satisfied, the receiver can decode at least one message from observed symbols based upon the rateless code. The receiver can end the transmission epoch by transmitting an end of epoch message.
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Patent Agency Ranking
公开(公告)号：US10225036B2
公开(公告)日：2019-03-05
申请号：US15181393
申请日：2016-06-13
Applicant: California Institute of Technology , The Research Foundation for the State University of New York
Inventor： Parham Noorzad , Michelle Effros , Michael Langberg
Abstract: Systems and methods for improved data transmission utilizing a communication facilitator are described in accordance with embodiments of the invention. One embodiment includes a plurality of nodes, that each comprise: a transmitter; a receiver; and an encoder that encodes message data for transmission using a plurality of codewords; a cooperation facilitator node comprising: a transmitter; and a receiver; wherein the nodes are configured to transmit data parameters to the cooperation facilitator; wherein the cooperation facilitator is configured to generate cooperation parameters based upon the data parameters received from the nodes; wherein the cooperation facilitator is configured to transmit cooperation parameters to the nodes; and wherein the encoder in each of the nodes selects a codeword from the plurality of codewords based at least in part upon the cooperation parameters received from the communication facilitator and transmit the selected codeword via the multiple access channel.
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公开(公告)号：US20140250301A1
公开(公告)日：2014-09-04
申请号：US14193984
申请日：2014-02-28
Applicant: CALIFORNIA INSTITUTE OF TECHNOLOGY
Inventor： Christopher S. Chang , Tracey C. Ho , Michelle Effros
IPC: H04L29/06
CPC classification number: H04L63/0407 , H04L45/64 , H04L63/18 , H04L67/104
Abstract: A computer-based peer-to-peer anonymous networking using a coding scheme with a formal information theoretic security characterization to construct a corresponding overlay subgraph is presented. A code construction based on linear coding which can be used for data transfer in an anonymous network is also presented. Various performance and simulation of the presented codes are provided in the Annex A1 which makes part of the present disclosure.
Abstract translation: 提出了一种基于计算机的对等匿名网络，使用具有正式信息理论安全表征的编码方案来构建相应的覆盖子图。 还提出了可以用于匿名网络中的数据传输的基于线性编码的代码构造。 在附件A1中提供了所提出的代码的各种性能和模拟，这是本公开的一部分。
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公开(公告)号：US10579495B2
公开(公告)日：2020-03-03
申请号：US15984161
申请日：2018-05-18
Applicant: California Institute of Technology , The Research Foundation for the State University of New York
Inventor： Parham Noorzad , Michelle Effros , Michael Langberg
Abstract: Systems and methods for utilizing cooperation facilitators to achieve joint message and network state cooperation in accordance with various embodiments of the invention are disclosed. One embodiment of the invention includes: a plurality of transmitters; a receiver that has access to at least partial network state information and that includes a decoder configured to decode signals received via a multiple terminal channel from the plurality of transmitters using the at least partial network state information; and a cooperation facilitator. In addition, at least some of the plurality of transmitters are configured to transmit message information to the cooperation facilitator and the cooperation facilitator is configured to generate cooperation parameters based upon the message information and the manner in which state information is utilized by the receiver to decode signals received via the multiple terminal channel. In addition, the cooperation facilitator is configured to transmit cooperation parameters to the plurality of transmitters that select codewords based at least in part upon the received cooperation parameters.
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公开(公告)号：US12119932B2
公开(公告)日：2024-10-15
申请号：US17146343
申请日：2021-01-11
Applicant: California Institute of Technology
Inventor： Michelle Effros , Yuxin Liu
CPC classification number: H04L1/0057 , H03M13/1105 , H03M13/1148 , H04L1/0041
Abstract: Systems and methods in accordance with various embodiments of the invention enable communicating using nested Low Density Parity Check (LDPC) codes. A nested LDPC code is an LDPC code having a full blocklength, where shorter blocklengths of the nested LDPC code can be utilized as shorter blocklength LDPC codes. In certain embodiments, a transmitter utilizes a nested LDPC code to communicate via a point-to-point connection. In several embodiments, multiple transmitters utilize nested LDPC codes to communicate simultaneously via a Random Access Channel. One embodiment includes a transmitter capable of encoding a message as symbols using a nested LDPC code until a feedback message indicating an end of epoch message is received. A receiver can determine whether a decoding rule is satisfied at predetermined decode times and transmit an end of epoch message when the decoder can decode a message based upon the nested LDPC code.
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公开(公告)号：US11689318B2
公开(公告)日：2023-06-27
申请号：US17146462
申请日：2021-01-11
Applicant: California Institute of Technology
Inventor： Recep Can Yavas , Victoria Kostina , Michelle Effros
CPC classification number: H04L1/0687 , H04L1/0643 , H04L12/1868
Abstract: Communication systems and methods in accordance with various embodiments of the invention employ a rateless coding strategy in which an encoder utilizes codewords located within a restricted subset of a multi-dimensional sphere. In one embodiment, a transmitter is configured to encode message data as symbols using a rateless code until an end of epoch message is received, where the rateless code comprises a set of codewords characterized in that they are located within a restricted subset of a multi-dimensional sphere. A receiver receives observed symbols and at each of a predetermined set of decode times, determines whether a decoding rule is satisfied. When the decoding rule is satisfied, the receiver decodes at least one message using the rateless code and transmits an end of epoch message.
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