Patents by Inventor Jason Alexander Trachewsky

Jason Alexander Trachewsky has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 9264275
    Abstract: A network device for implementing high-rate greenfield transmission in a mixed mode frame structure. The network device is configured to transmit a mixed mode frame on two adjacent channels. The mixed mode frame comprises at least two backward compatible portions of a first frequency and a greenfield portion of a second frequency.
    Type: Grant
    Filed: December 2, 2013
    Date of Patent: February 16, 2016
    Assignee: BROADCOM CORPORATION
    Inventor: Jason Alexander Trachewsky
  • Patent number: 8996949
    Abstract: Method and system encodes a signal according to a code rate that includes a ratio of uncoded bits to coded bits. An outer encoder encodes the signal into code words. An interleaver converts the code words into a byte sequence for wireless transmission. An inner encoder executes a convolutional code to generate an encoded signal. The encoded signal is transmitted over a plurality of subcarriers associated with a wide bandwidth channel having a spectral efficiency associated with the code rate. The outer encoder includes a Reed-Solomon encoder having a rate that increases the code rate of uncoded bits to coded bits.
    Type: Grant
    Filed: December 18, 2013
    Date of Patent: March 31, 2015
    Assignee: Broadcom Corporation
    Inventors: Christopher J. Hansen, Jason Alexander Trachewsky, Rajendra T. Moorti
  • Patent number: 8917676
    Abstract: A device and method transmits a frame of a wireless communication. The frame includes a preamble that includes a short training sequence and a long training sequence. The long training sequence includes non-zero energy on each of a plurality of subcarriers except a DC subcarrier. A frequency domain window is inserted into the long training sequence to stimulate the subcarriers for channel estimation.
    Type: Grant
    Filed: September 23, 2008
    Date of Patent: December 23, 2014
    Assignee: Broadcom Corporation
    Inventors: Christopher J. Hansen, Jason Alexander Trachewsky, Rajendra T. Moorti
  • Patent number: 8750252
    Abstract: A method and device for transmitting a frame of a wireless communication begins by generating a preamble of the frame that includes a short training sequence and at least one long training sequence. The at least one long training sequence includes non-zero energy on each of a plurality of subcarriers except a DC subcarrier. The at least one long training sequence corresponds to the number of antennas and applicable wireless communication standards. A matrix is defined to represent the at least one long training sequence. The preamble is compatible with legacy and current standards. A channel is defined with a set of sub carriers to transmit the frame.
    Type: Grant
    Filed: April 5, 2011
    Date of Patent: June 10, 2014
    Assignee: Broadcom Corporation
    Inventors: Christopher J. Hansen, Jason Alexander Trachewsky, Rajendra T. Moorti
  • Publication number: 20140153487
    Abstract: A network device for implementing high-rate greenfield transmission in a mixed mode frame structure. The network device is configured to transmit a mixed mode frame on two adjacent channels. The mixed mode frame comprises at least two backward compatible portions of a first frequency and a greenfield portion of a second frequency.
    Type: Application
    Filed: December 2, 2013
    Publication date: June 5, 2014
    Applicant: BROADCOM CORPORATION
    Inventor: Jason Alexander TRACHEWSKY
  • Publication number: 20140105202
    Abstract: Method and system encodes a signal according to a code rate that includes a ratio of uncoded bits to coded bits. An outer encoder encodes the signal into code words. An interleaver converts the code words into a byte sequence for wireless transmission. An inner encoder executes a convolutional code to generate an encoded signal. The encoded signal is transmitted over a plurality of subcarriers associated with a wide bandwidth channel having a spectral efficiency associated with the code rate. The outer encoder includes a Reed-Solomon encoder having a rate that increases the code rate of uncoded bits to coded bits.
    Type: Application
    Filed: December 18, 2013
    Publication date: April 17, 2014
    Applicant: BROADCOM CORPORATION
    Inventors: Christopher J. Hansen, Jason Alexander Trachewsky, Rajendra T. Moorti
  • Patent number: 8670718
    Abstract: A signal quality metric is determined for each of multiple signal paths. Each of the signal paths corresponds to a respective antenna. The determined signal quality metric is modified for one or more signal paths. A subset of the signal paths is selected for receiving a signal based at least in part on the determined signal quality metrics. The selecting is biased based at least in part on the modified signal quality metrics.
    Type: Grant
    Filed: April 18, 2013
    Date of Patent: March 11, 2014
    Assignee: Broadcom Corporation
    Inventors: Rajendra Tushar Moorti, Min Chuin Hoo, Jason Alexander Trachewsky
  • Patent number: 8630367
    Abstract: Methods, devices and systems for wireless communication generate signals by determining whether legacy devices are within a proximal region of the wireless communication. When at least one legacy device is within the proximal region, a frame is formatted to include a preamble field, a signal field, and a data field. Further, the uncoded bits are encoded according to a coding format. The coding format is determined according to bits in the preamble and applicable sub-field lengths.
    Type: Grant
    Filed: December 12, 2011
    Date of Patent: January 14, 2014
    Assignee: Broadcom Corporation
    Inventors: Christopher J. Hansen, Jason Alexander Trachewsky, Amit G. Bagchi, George Kondylis
  • Patent number: 8599755
    Abstract: A network device for implementing high-rate greenfield transmission in a mixed mode frame structure. The network device is configured to transmit a mixed mode frame on two adjacent channels. The mixed mode frame comprises at least two backward compatible portions of a first frequency and a greenfield portion of a second frequency.
    Type: Grant
    Filed: March 22, 2011
    Date of Patent: December 3, 2013
    Assignee: Broadcom Corporation
    Inventor: Jason Alexander Trachewsky
  • Publication number: 20130230087
    Abstract: A signal quality metric is determined for each of multiple signal paths. Each of the signal paths corresponds to a respective antenna. The determined signal quality metric is modified for one or more signal paths. A subset of the signal paths is selected for receiving a signal based at least in part on the determined signal quality metrics. The selecting is biased based at least in part on the modified signal quality metrics.
    Type: Application
    Filed: April 18, 2013
    Publication date: September 5, 2013
    Applicant: Broadcom Corporation
    Inventors: Rajendra Tushar Moorti, Min Chuin Hoo, Jason Alexander Trachewsky
  • Patent number: 8477594
    Abstract: A network device for generating an expanded long training sequence with a minimal peak-to-average ratio. The network device includes a signal generating circuit for generating the expanded long training sequence. The network device also includes an Inverse Fourier Transform for processing the expanded long training sequence from the signal generating circuit and producing an optimal expanded long training sequence with a minimal peak-to-average ratio. The expanded long training sequence and the optimal expanded long training sequence are stored on more than 52 sub-carriers.
    Type: Grant
    Filed: August 2, 2011
    Date of Patent: July 2, 2013
    Assignee: Broadcom Corporation
    Inventors: Jason Alexander Trachewsky, Rajendra T. Moorti
  • Patent number: 8428541
    Abstract: A method for choosing at least one signal path is disclosed and may include determining a power level characteristic for each of a plurality of signal paths. The determined power level characteristic for each of the plurality of signal paths may be modified. At least one of the plurality of signal paths may be selected for receiving a signal. The selecting may be based on at least one of the modified power level characteristics. The method may also include cycling through at least one of the signal paths. The power level characteristic for each of the plurality of signal paths may be biased. The power level characteristic for each of the plurality of signal paths may be increased by a fixed amount.
    Type: Grant
    Filed: March 16, 2010
    Date of Patent: April 23, 2013
    Assignee: Broadcom Corporation
    Inventors: Rajendra Tushar Moorti, Min Chuin Hoo, Jason Alexander Trachewsky
  • Patent number: 8369388
    Abstract: Embodiments of a wireless transceiver are provided. Embodiments can be used in multiple-input-multiple-output (MIMO) wireless transceivers. In an embodiment, radio control signal bundles are provided as direct parallel interconnects between digital signal processing modules and the radio module of the wireless transceiver to enable a precise low-latency control of radio functions. In another embodiment, a separate physical line is provided to control each radio setting of the radio module, thereby enabling simultaneous real-time control of any number of radio settings. In a further embodiment, the various digital and analog components of the wireless transceiver are integrated within a single chip of the same process technology.
    Type: Grant
    Filed: December 21, 2007
    Date of Patent: February 5, 2013
    Assignee: Broadcom Corporation
    Inventors: Joachim S. Hammerschmidt, Arya Reza Behzad, Keith Andrews Carter, Simeon Furrer, Rohit Vijay Gaikwad, Jason Alexander Trachewsky, Amit Bagchi, Rajendra Tushar Moorti, Venkateswara Rao Kodavati
  • Patent number: 8363696
    Abstract: A system for implementing an orthogonal frequency division multiplexing scheme and providing an improved range extension. The system includes a transmitter for transmitting data to a receiver. The transmitter includes a symbol mapper for generating a symbol for each of a plurality of subcarriers and a spreading module for spreading out the symbol on each of the plurality of subcarriers by using a direct sequence spread spectrum. The symbol on each of the plurality of subcarriers is spread by multiplying the symbol by predefined length sequences. The receiver includes a de-spreader module for de-spreading the symbols on each of the plurality of subcarriers. The de-spreader module includes a simply correlator receiver for obtaining maximum detection. The correlator produces an output sequence of a same length as an input sequence and the de-spreader module uses a point of maximum correlation on the output sequence to obtain a recovered symbol.
    Type: Grant
    Filed: September 6, 2011
    Date of Patent: January 29, 2013
    Assignee: Broadcom Corporation
    Inventor: Jason Alexander Trachewsky
  • Patent number: 8296817
    Abstract: A method and apparatus for coupling a system propagating home networking communications signals over telephone lines to a system propagating television signals over a coaxial cable system to a television device. A three port adapter has a phone line port, a first coaxial cable port and a second coaxial cable port. The first coaxial cable port is coupled to the phone line port through a low pass filter and wideband balun adapted to pass home networking communications signals while being adapted to reject television signals. The first coaxial cable port is also coupled to the second coaxial port through a high pass filter while being adapted to reject home networking communications signals. The phone line port is coupled to the system propagating home networking communications signals. The first coaxial cable port is coupled to the system propagating television signals over coaxial cable. The second coaxial cable port to the television device.
    Type: Grant
    Filed: May 16, 2002
    Date of Patent: October 23, 2012
    Assignee: Broadcom Corporation
    Inventors: David Fifield, Jason Alexander Trachewsky, John T. Holloway
  • Patent number: 8265185
    Abstract: Method and system encodes a signal according to a code rate that includes a ratio of uncoded bits to coded bits. An outer Reed-Solomon encoder encodes the signal into codewords. An interleaver converts the codewords into bits of frames for wireless transmission. An inner encoder executes a convolutional code to generate an encoded signal. The encoded signal is transmitted over a plurality of subcarriers associated with a wide bandwidth channel. The convolutional code is punctured and code states are added by the inner encoder to improve the code rate.
    Type: Grant
    Filed: August 2, 2011
    Date of Patent: September 11, 2012
    Assignee: Broadcom Corporation
    Inventors: Christopher J. Hansen, Jason Alexander Trachewsky, Rajendra T. Moorti
  • Publication number: 20120140758
    Abstract: Methods, devices and systems for wireless communication generate signals by determining whether legacy devices are within a proximal region of the wireless communication. When at least one legacy device is within the proximal region, a frame is formatted to include a preamble field, a signal field, and a data field. Further, the uncoded bits are encoded according to a coding format. The coding format is determined according to bits in the preamble and applicable sub-field lengths.
    Type: Application
    Filed: December 12, 2011
    Publication date: June 7, 2012
    Applicant: BROADCOM CORPORATION
    Inventors: Christopher J. Hansen, Jason Alexander Trachewsky, Amit G. Bagchi, George Kondylis
  • Publication number: 20120063489
    Abstract: A system for implementing an orthogonal frequency division multiplexing scheme and providing an improved range extension. The system includes a transmitter for transmitting data to a receiver. The transmitter includes a symbol mapper for generating a symbol for each of a plurality of subcarriers and a spreading module for spreading out the symbol on each of the plurality of subcarriers by using a direct sequence spread spectrum. The symbol on each of the plurality of subcarriers is spread by multiplying the symbol by predefined length sequences. The receiver includes a de-spreader module for de-spreading the symbols on each of the plurality of subcarriers. The de-spreader module includes a simply correlator receiver for obtaining maximum detection. The correlator produces an output sequence of a same length as an input sequence and the de-spreader module uses a point of maximum correlation on the output sequence to obtain a recovered symbol.
    Type: Application
    Filed: September 6, 2011
    Publication date: March 15, 2012
    Applicant: BROADCOM CORPORATION
    Inventor: Jason Alexander Trachewsky
  • Patent number: 8094749
    Abstract: Methods, devices and systems for wireless communication generate signals by determining whether legacy devices are within a proximal region of the wireless communication. When at least one legacy device is within the proximal region, a frame is formatted to include a preamble field, a signal field, and a data field. Further, the uncoded bits are encoded according to a coding format. The coding format is determined according to bits in the preamble and applicable sub-field lengths.
    Type: Grant
    Filed: September 15, 2009
    Date of Patent: January 10, 2012
    Assignee: Broadcom Corporation
    Inventors: Christopher J. Hansen, Jason Alexander Trachewsky, Amit G. Bagchi, George Kondylis
  • Publication number: 20110305297
    Abstract: Method and system encodes a signal according to a code rate that includes a ratio of uncoded bits to coded bits. An outer Reed-Solomon encoder encodes the signal into codewords. An interleaver converts the codewords into bits of frames for wireless transmission. An inner encoder executes a convolutional code to generate an encoded signal. The encoded signal is transmitted over a plurality of subcarriers associated with a wide bandwidth channel. The convolutional code is punctured and code states are added by the inner encoder to improve the code rate.
    Type: Application
    Filed: August 2, 2011
    Publication date: December 15, 2011
    Applicant: BROADCOM CORPORATION
    Inventors: Christopher J. Hansen, Jason Alexander Trachewsky, Rajendra T. Moorti