Patents by Inventor Michael N. Kloos
Michael N. Kloos 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).
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Publication number: 20240103182Abstract: Techniques are provided for employing an embedded software defined radio (SDR) in a navigation system. A navigation system implementing the techniques according to an embodiment includes a global positioning system (GPS) receiver configured to acquire and track received GPS signals. The system also includes an SDR configured to process received communication signals. The communication signals include timing data. The SDR is further configured to calculate position and navigation data based on a combination of the processed communication signals and the tracked GPS signals provided by the GPS receiver. The system further includes a system timer configured to provide a common time base for use by the GPS receiver and the SDR. The navigation system is implemented in an application specific integrated circuit (ASIC).Type: ApplicationFiled: September 27, 2022Publication date: March 28, 2024Applicant: BAE SYSTEMS Information and Electronic Systems Integration Inc.Inventors: John E. Acheson, Michael N. Kloos, Nathaniel L. James, Mitchell Dennis
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Patent number: 8995548Abstract: An Orthogonal Frequency Division Multiplexing communication system is provided that schedules a transmission of uplink sounding signals or channel quality feedback signals in sounding intervals, or sounding zones, that are outside of the sub-frames, thereby preserving sub-frame capacity for other overhead and data transmissions.Type: GrantFiled: January 12, 2009Date of Patent: March 31, 2015Assignee: Google Technology Holdings LLCInventors: Michael N. Kloos, Mark G. Spiotta, Frederick W. Vook
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Patent number: 8090378Abstract: A method for configuring color codes in a cellular telephone network is disclosed. The method includes calculating a distance between all possible color codes to be assigned to each of the cells in the network, assigning a first code to a first base station, determining a second code corresponding to a maximum calculated distance from the first code, and assigning subsequent codes to adjacent cells as determined by the maximum available distance between the two neighboring cells' codes to help minimize cross talk and channel interference on the cellular network.Type: GrantFiled: December 12, 2007Date of Patent: January 3, 2012Assignee: Motorola Mobility, Inc.Inventors: Mahesh Krishnaswamy, Michael N. Kloos
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Patent number: 7979775Abstract: Disclosed is a method and communication device for suppressing interference. The method comprises performing, with a turbo decoder (314), at least one turbo decoding attempt (1106) on a received signal (1104). The turbo decoding attempt generates at least one whole word code bit therefrom (1108). The whole word code bit (1108) corresponds to a group of bits comprising a transmitted symbol. The method determines if the whole word code bit (1108) has a confidence level exceeding a given threshold (1110). If the whole word code bit (1108) does have a confidence level exceeding the given threshold, the whole code word bit is selected for use in data symbol recovery (1114).Type: GrantFiled: October 30, 2006Date of Patent: July 12, 2011Assignee: Motorola Mobility, Inc.Inventors: Xiaoyong Yu, Michael N. Kloos
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Publication number: 20100103810Abstract: A base station and method for selecting a modulation coding scheme (MCS) in an OFDM communication system, includes a first step 500 of estimating the channel response on each antenna based on the uplink feedback. A next step 502 includes calculating transmit weights from the uplink feedback. A next step 504 includes computing a beamformed Carrier-to-Interference plus Noise Ratio based on a broadcast Carrier-to-Interference plus Noise Ratio and the transmit weights and the channel response. A next step 506 includes choosing a best modulation coding scheme for a beamform allocation using the beamformed CINR. A best antenna gain and frequency band can also be chosen using the beamformed CINR.Type: ApplicationFiled: October 23, 2008Publication date: April 29, 2010Applicant: MOTOROLA, INC.Inventors: Michael N. Kloos, Frederick W. Vook, Xiangyang Zhuang
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Publication number: 20090268710Abstract: An apparatus and method for uplink synchronization without periodic ranging in a communication system includes a first step (700) of detecting embedded pilot signals in data traffic from mobile stations. A next step (702) includes estimating a time error by calculating a pilot signal phase difference across a tone index within the same OFDM symbol. A next step (704) includes estimating a frequency error by calculating a pilot signal phase difference across multiple OFDM symbols within a tone. A next step (706) includes determining if at least one of the estimated time and frequency errors exceed a predetermined threshold. A next step (708) includes sending synchronization information to at least one mobile station for the mobile station to synchronize (710) its transmit signals in response to at least one of the time and frequency error.Type: ApplicationFiled: April 23, 2008Publication date: October 29, 2009Applicant: MOTOROLA, INC.Inventors: Xiaoyong Yu, Michael N. Kloos, Alan P. Rottinghaus
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Patent number: 7590186Abstract: Arrangements relating to an Orthogonal Frequency Division Multiplexing (OFDM) receiver (200) can include performing at least one Low-Density Parity Check (LDPC) decoding attempt on a received signal (725) and evaluating at least one parity check for each LDPC decoding attempt (735). Failed LDPC decoding attempts can be counted according to the evaluated parity checks (740). The signal can be selectively processed through at least one joint demodulation-decoding loop according to the counting of failed LDPC decoding attempts (745).Type: GrantFiled: March 23, 2006Date of Patent: September 15, 2009Assignee: Motorola, Inc.Inventors: Xiaonyong Yu, Michael N. Kloos, Alan P. Rottinghaus
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Publication number: 20090225879Abstract: An Orthogonal Frequency Division Multiplexing communication system is provided that schedules a transmission of uplink sounding signals or channel quality feedback signals in sounding intervals, or sounding zones, that are outside of the sub-frames, thereby preserving sub-frame capacity for other overhead and data transmissions.Type: ApplicationFiled: January 12, 2009Publication date: September 10, 2009Applicant: MOTOROLA, INC.Inventors: Michael N. Kloos, Mark G. Spiotta, Frederick W. Vook
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Publication number: 20090161528Abstract: A method for uplink synchronization, in a wireless communication device, with a base station in a wireless communication system based on Orthogonal Frequency Division Multiple Access (OFDMA) is disclosed. The method comprises selecting (440), by the wireless communication device, at least one ranging slot randomly from ranging slots in at least a transition gap. The wireless communication device further transmits (445) at least one ranging code in the selected at least one ranging slot.Type: ApplicationFiled: December 21, 2007Publication date: June 25, 2009Applicant: MOTOROLA, INC.Inventors: SAMIR S. VAIDYA, MICHAEL N. KLOOS, MARK G. SPIOTTA, JUN WANG
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Publication number: 20090156223Abstract: A method for configuring color codes in a cellular telephone network is disclosed. The method includes calculating a distance between all possible color codes to be assigned to each of the cells in the network, assigning a first code to a first base station, determining a second code corresponding to a maximum calculated distance from the first code, and assigning subsequent codes to adjacent cells as determined by the maximum available distance between the two neighboring cells' codes to help minimize cross talk and channel interference on the cellular network.Type: ApplicationFiled: December 12, 2007Publication date: June 18, 2009Applicant: MOTOROLA, INC.Inventors: Mahesh Krishnaswamy, Michael N. Kloos
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Patent number: 7382754Abstract: An Integrated Digital Enhanced Network system (1) includes a base radio (104) interconnected to a plurality of transcoders (4) located at central offices (2). The base radio (104) time division multiplexes voice packets from the plurality of transcoders (4) into a time division multiplexed signal frame (20). Each signal frame (20) includes a plurality of sequential frames (204). Each sequential frame (204) includes a predetermined number of slots (202) based upon a channel interleave. Each of the slots (202) includes a slot descriptor block (2024), and a plurality of subslots (e.g., 2026, 2028). The slot descriptor block (2024) alternatively contains overhead information for the plurality of subslots (e.g., 2026, 2028). The subscriber device (30) demultiplexes each sequential frame (204) and receives a specific slot (202) and a specific subslot of the specific slot based upon an assigned slot offset.Type: GrantFiled: March 14, 2003Date of Patent: June 3, 2008Assignee: Motorola, Inc.Inventors: Mark J. Marsan, Michael N. Kloos
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Publication number: 20080109701Abstract: Disclosed is a method and communication device for suppressing interference. The method comprises performing, with a turbo decoder (314), at least one turbo decoding attempt (1106) on a received signal (1104). The turbo decoding attempt generates at least one whole word code bit therefrom (1108). The whole word code bit (1108) corresponds to a group of bits comprising a transmitted symbol. The method determines if the whole word code bit (1108) has a confidence level exceeding a given threshold (1110). If the whole word code bit (1108) does have a confidence level exceeding the given threshold, the whole code word bit is selected for use in data symbol recovery (1114).Type: ApplicationFiled: October 30, 2006Publication date: May 8, 2008Applicant: MOTOROLA, INC.Inventors: Xiaoyong Yu, Michael N. Kloos
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Patent number: 7313188Abstract: A system, wireless device (102) and method reduce the peak-to-average power of a transmitter by creating at least two sampled carrier data streams, running each carrier through a separate delay block, mixing each carrier over in frequency an appropriate amount, resulting in at least two frequency division multiplexed signals, and combining the at least two frequency division multiplexed signals together. The four sampled carrier data streams may each have a bandwidth of 25 kHz. Each separate delay block is less than 20% of its corresponding symbol time. The transmitter may be used to transmit wideband integrated digitally enhanced network (WiDEN) signals.Type: GrantFiled: June 30, 2003Date of Patent: December 25, 2007Assignee: Motorola, Inc.Inventors: Stephen S. Shiao, Michael N. Kloos, Michael J. Rudowicz, Patrick J. Doran
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Patent number: 7277405Abstract: A system for reducing or eliminating cross talk resulting from co-channel interference in TDMA communication systems is disclosed. In general, the system may include one or more enhanced mobile stations sending, to an enhanced base station, base station identifying information in a training period that was previously used by mobile units to send pseudotrainiug information. The base station identifying information may include, but is not limited to, global cell site identification or any portion thereof or local cell site identification or any portion thereof. Upon receipt of information including the appropriate base station identifying information, die enhanced base station may perform enhanced synchronization and reception and correction functions.Type: GrantFiled: December 27, 2001Date of Patent: October 2, 2007Assignee: Motorola, Inc.Inventors: Michael N. Kloos, David A. Hensley, Christopher L. Johnson
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Patent number: 6909761Abstract: A time division multiple access communication system is provided having multiple sub-channels according to known quadrature amplitude modulation techniques. Each sub-channel has a pre-determined time duration and is divided by a pre-determined number of symbol position time divisions. The symbol positions carry color codes and ACP codes in addition to sync, pilot and data symbols. Pilot symbols in the second half of the slot are replaced with dual purpose color code and ACP symbols. The dual purpose symbols are either modulated with a lower order modulation than data symbols or are repeated values of dedicated symbols located earlier in the same slot, or both. Slot throughput is attained with a minimal bit error rate penalty.Type: GrantFiled: December 19, 2002Date of Patent: June 21, 2005Assignee: Motorola, Inc.Inventors: Michael N. Kloos, Michael S. Palac, Yashpal Thind
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Patent number: 6873614Abstract: A time division multiple access communication system is provided having multiple sub-channels according to known quadrature amplitude modulation techniques. Each sub-channel has a pre-determined time duration and is divided by a pre-determined number of symbol position time divisions. The symbol positions carry sync, pilot and data symbols. Color code information is incorporated into the sync and pilot symbols. The QAM constellation value of the sync symbol is mapped to a color code value. In addition, the sync symbol carries a color code extension which enlarges the color code space.Type: GrantFiled: December 19, 2002Date of Patent: March 29, 2005Assignee: Motorola, Inc.Inventors: Michael N. Kloos, Michael S. Palac, Mark Marsan
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Publication number: 20040264586Abstract: A system, wireless device (102) and method reduce the peak-to-average power of a transmitter by creating at least two sampled carrier data streams, running each carrier through a separate delay block, mixing each carrier over in frequency an appropriate amount, resulting in at least two frequency division multiplexed signals, and combining the at least two frequency division multiplexed signals together. The four sampled carrier data streams may each have a bandwidth of 25 kHz. Each separate delay block is less than 20% of its corresponding symbol time. The transmitter may be used to transmit wideband integrated digitally enhanced network (WiDEN) signals.Type: ApplicationFiled: June 30, 2003Publication date: December 30, 2004Applicant: MOTOROLA, INC.Inventors: Stephen S. Shiao, Michael N. Kloos, Michael J. Rudowicz, Patrick J. Doran
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Publication number: 20040179501Abstract: An Integrated Digital Enhanced Network system (1) includes a base radio (104) interconnected to a plurality of transcoders (4) located at central offices (2). The base radio (104) time division multiplexes voice packets from the plurality of transcoders (4) into a time division multiplexed signal frame (20). Each signal frame (20) includes a plurality of sequential frames (204). Each sequential frame (204) includes a predetermined number of slots (202) based upon a channel interleave. Each of the slots (202) includes a slot descriptor block (2024), and a plurality of subslots (e.g., 2026, 2028). The slot descriptor block (2024) alternatively contains overhead information for the plurality of subslots (e.g., 2026, 2028). The subscriber device (30) demultiplexes each sequential frame (204) and receives a specific slot (202) and a specific subslot of the specific slot based upon an assigned slot offset.Type: ApplicationFiled: March 14, 2003Publication date: September 16, 2004Applicant: MOTOROLA, INC.Inventors: Mark J. Marsan, Michael N. Kloos
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Publication number: 20040120304Abstract: A time division multiple access communication system is provided having multiple sub-channels according to known quadrature amplitude modulation techniques. Each sub-channel has a pre-determined time duration and is divided by a pre-determined number of symbol position time divisions. The symbol positions carry color codes and ACP codes in addition to sync, pilot and data symbols. Pilot symbols in the second half of the slot are replaced with dual purpose color code and ACP symbols. The dual purpose symbols are either modulated with a lower order modulation than data symbols or are repeated values of dedicated symbols located earlier in the same slot, or both. Slot throughput is attained with a minimal bit error rate penalty.Type: ApplicationFiled: December 19, 2002Publication date: June 24, 2004Applicant: Motorola, Inc.Inventors: Michael N. Kloos, Michael S. Palac, Yashpal Thind
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Publication number: 20040120303Abstract: A time division multiple access communication system is provided having multiple sub-channels according to known quadrature amplitude modulation techniques. Each sub-channel has a pre-determined time duration and is divided by a pre-determined number of symbol position time divisions. The symbol positions carry sync, pilot and data symbols. Color code information is incorporated into the sync and pilot symbols. The QAM constellation value of the sync symbol is mapped to a color code value. In addition, the sync symbol carries a color code extension which enlarges the color code space.Type: ApplicationFiled: December 19, 2002Publication date: June 24, 2004Applicant: Motorola Inc.Inventors: Michael N. Kloos, Michael S. Palac, Mark Marsan