Patents Assigned to APPLIED TRANSFORM, LLC
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Patent number: 11736247Abstract: Techniques for header encoding include encoding a plurality of bits using a forward error correction code, generating an FEC codeword comprising a plurality of encoded bits, and concatenating a first copy of the FEC codeword with a second copy of the FEC codeword, wherein the concatenating comprises cyclically shifting by two bits the second concatenated copy of the FEC codeword relative to the first concatenated copy of the FEC codeword, wherein the encoded bits of the first and second copies of the FEC codewords are modulated on at least one OFDM symbol. techniques for header decoding include receiving a plurality of encoded bits comprising at least two concatenated copies of an FEC codeword, decoding a first copy of the FEC codeword to generate a first plurality of decoded bits, and decoding a second copy of the FEC codeword to generate a second plurality of decoded bits.Type: GrantFiled: June 3, 2021Date of Patent: August 22, 2023Assignee: APPLIED TRANSFORM, LLCInventor: Joon Bae Kim
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Patent number: 11032401Abstract: Techniques for header encoding include encoding a plurality of bits using a forward error correction code, generating an FEC codeword comprising a plurality of encoded bits, and concatenating a first copy of the FEC codeword with a second copy of the FEC codeword, wherein the concatenating comprises cyclically shifting by two bits the second concatenated copy of the FEC codeword relative to the first concatenated copy of the FEC codeword, wherein the encoded bits of the first and second copies of the FEC codewords are modulated on at least one OFDM symbol. techniques for header decoding include receiving a plurality of encoded bits comprising at least two concatenated copies of an FEC codeword, decoding a first copy of the FEC codeword to generate a first plurality of decoded bits, and decoding a second copy of the FEC codeword to generate a second plurality of decoded bits.Type: GrantFiled: April 15, 2020Date of Patent: June 8, 2021Assignee: APPLIED TRANSFORM, LLCInventor: Joon Bae Kim
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Patent number: 10917272Abstract: A non-transitory computer-readable information storage media for use within a wireless OFDM network that causes to be transmitted or received a first packet type and a second packet type. The first packet type has a header field with two parts with each part comprising a different set of header bits. The two parts of the header field are transmitted or received using two OFDM symbols. The second packet type has a header field with four parts with the first and second parts comprising the same first set of header bits and the third and the fourth part comprising the same second set of header bits. The four parts of the header field are transmitted or received using four OFDM symbols. The second packet type provides more reliable transmission or reception than the first packet type.Type: GrantFiled: February 3, 2020Date of Patent: February 9, 2021Assignee: APPLIED TRANSFORM, LLCInventors: Joon Bae Kim, Marcos C. Tzannes
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Patent number: 10637971Abstract: Techniques for header encoding include encoding a plurality of bits using a forward error correction code, generating an FEC codeword comprising a plurality of encoded bits, and concatenating a first copy of the FEC codeword with a second copy of the FEC codeword, wherein the concatenating comprises cyclically shifting by two bits the second concatenated copy of the FEC codeword relative to the first concatenated copy of the FEC codeword, wherein the encoded bits of the first and second copies of the FEC codewords are modulated on at least one OFDM symbol. techniques for header decoding include receiving a plurality of encoded bits comprising at least two concatenated copies of an FEC codeword, decoding a first copy of the FEC codeword to generate a first plurality of decoded bits, and decoding a second copy of the FEC codeword to generate a second plurality of decoded bits.Type: GrantFiled: September 28, 2018Date of Patent: April 28, 2020Assignee: APPLIED TRANSFORM, LLCInventor: Joon Bae Kim
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Patent number: 10554459Abstract: Method and apparatus for use within a wireless OFDM network that receives a first packet type in a first channel bandwidth and a second packet type in a second channel bandwidth, the first channel bandwidth being at least two times wider than the second channel bandwidth. The first packet type has a header field with two parts with each part comprising a different set of header bits. The two parts of the header field are received using two OFDM symbols. The second packet type has a header field with four parts with the first and second parts comprising the same first set of header bits and the third and the fourth part comprising the same second set of header bits. The four parts of the header field are received using four OFDM symbols. The second packet type provides more reliable reception than the first packet type.Type: GrantFiled: April 25, 2019Date of Patent: February 4, 2020Assignee: APPLIED TRANSFORM, LLCInventors: Joon Bae Kim, Marcos C. Tzannes
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Patent number: 10291449Abstract: Method and apparatus for use within a wireless OFDM network that transmits a first packet type in a first channel bandwidth and a second packet type in a second channel bandwidth, the first channel bandwidth being at least two times wider than the second channel bandwidth. The first packet type has a header field with two parts with each part comprising a different set of header bits. The two parts of the header field are transmitted using two OFDM symbols. The second packet type has a header field with four parts with the first and second parts comprising the same first set of header bits and the third and the fourth part comprising the same second set of header bits. The four parts of the header field are transmitted using four OFDM symbols. The second packet type provides more reliable transmission than the first packet type.Type: GrantFiled: September 7, 2018Date of Patent: May 14, 2019Assignee: APPLIED TRANSFORM, LLCInventors: Joon Bae Kim, Marcos C. Tzannes
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Patent number: 10091337Abstract: Techniques for header encoding include encoding a plurality of bits using a forward error correction code, generating an FEC codeword comprising a plurality of encoded bits, and concatenating a first copy of the FEC codeword with a second copy of the FEC codeword, wherein the concatenating comprises cyclically shifting by two bits the second concatenated copy of the FEC codeword relative to the first concatenated copy of the FEC codeword, wherein the encoded bits of the first and second copies of the FEC codewords are modulated on at least one OFDM symbol. techniques for header decoding include receiving a plurality of encoded bits comprising at least two concatenated copies of an FEC codeword, decoding a first copy of the FEC codeword to generate a first plurality of decoded bits, and decoding a second copy of the FEC codeword to generate a second plurality of decoded bits.Type: GrantFiled: March 24, 2017Date of Patent: October 2, 2018Assignee: APPLIED TRANSFORM, LLCInventor: Joon Bae Kim
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Patent number: 10079707Abstract: A method and apparatus for use within a wireless OFDM network that receives a first packet type and a second packet type. The first packet type has a header field with two parts with each part comprising a different set of header bits. The two parts of the header field are received using two OFDM symbols. The second packet type has a header field with four parts with the first and second parts comprising the same first set of header bits and the third and the fourth part comprising the same second set of header bits. The four parts of the header field are received using four OFDM symbols. The second packet type provides more reliable reception than the first packet type.Type: GrantFiled: April 20, 2018Date of Patent: September 18, 2018Assignee: APPLIED TRANSFORM, LLCInventors: Joon Bae Kim, Marcos C. Tzannes
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Patent number: 9973361Abstract: Method and apparatus for use within a wireless OFDM network that transmits a first packet type and a second packet type. The first packet type has a header field with two parts with each part comprising a different set of header bits. The two parts of the header field are transmitted using two OFDM symbols. The second packet type has a header field with four parts with the first and second parts comprising the same first set of header bits and the third and the fourth part comprising the same second set of header bits. The four parts of the header field are transmitted using four OFDM symbols. The second packet type provides more reliable transmission than the first packet type.Type: GrantFiled: March 31, 2017Date of Patent: May 15, 2018Assignee: APPLIED TRANSFORM, LLCInventors: Joon Bae Kim, Marcos C. Tzannes
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Patent number: 9614566Abstract: Method and apparatus for use within a wireless OFDM network that transmits and receives first and second packets each having header bits and utilizing variable header repetition. The header bits in the first packet are communicated on multiple OFDM symbols and repeated on a plurality of OFDM subcarriers in a first frequency band. The header bits in a second packet are communicated on fewer OFDM symbols and in a second frequency band that overlaps with and is wider than the first frequency band.Type: GrantFiled: November 14, 2016Date of Patent: April 4, 2017Assignee: APPLIED TRANSFORM, LLCInventors: Joon Bae Kim, Marcos C. Tzannes
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Patent number: 9609091Abstract: A wireless OFDM transceiver uses subcarrier characteristics, such as phase and amplitude, to detect the bandwidth of a received packet. By detecting different subcarrier characteristics in the long training symbols of a packet at the receiver, the packet is associated with different bandwidths. The different bandwidths are used in a wireless network where devices can communicate using different frequency bands that overlap one another and where one is wider than the other.Type: GrantFiled: May 6, 2016Date of Patent: March 28, 2017Assignee: APPLIED TRANSFORM, LLCInventor: Joon Bae Kim
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Patent number: 9602637Abstract: A wireless OFDM transceiver uses subcarrier characteristics, such as phase and amplitude, to detect the bandwidth of a received packet. By detecting different subcarrier characteristics in the long training symbols of a packet at the receiver, the packet is associated with different bandwidths. The different bandwidths are used in a wireless network where devices can communicate using different frequency bands that overlap one another and where one is wider than the other.Type: GrantFiled: May 6, 2016Date of Patent: March 21, 2017Assignee: APPLIED TRANSFORM, LLCInventor: Joon Bae Kim
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Patent number: 9596327Abstract: A wireless OFDM transceiver uses a method of detecting subcarrier characteristics, such as phase and amplitude, to determine the bandwidth of a received packet. By detecting different subcarrier characteristics in the long training symbols of a packet at the receiver, the packet is associated with different bandwidths. The different bandwidths are used in a wireless network where devices can communicate using two frequency bands that overlap one another and where one is wider than the other.Type: GrantFiled: May 6, 2016Date of Patent: March 14, 2017Assignee: APPLIED TRANSFORM, LLCInventor: Joon Bae Kim
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Patent number: 9584262Abstract: Method and apparatus for use within a wireless OFDM network that transmits and receives first and second packets each having header bits and utilizing variable header repetition. The header bits in the first packet are communicated on multiple OFDM symbols and repeated on a plurality of OFDM subcarriers in a first frequency band. The header bits in a second packet are communicated on fewer OFDM symbols and in a second frequency band that overlaps with and is wider than the first frequency band.Type: GrantFiled: August 20, 2010Date of Patent: February 28, 2017Assignee: APPLIED TRANSFORM, LLCInventors: Joon Bae Kim, Marcos C. Tzannes
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Patent number: 9363121Abstract: Techniques for header encoding include encoding a plurality of bits using a forward error correction code, generating an FEC codeword comprising a plurality of encoded bits, and concatenating a first copy of the FEC codeword with a second copy of the FEC codeword, wherein the concatenating comprises cyclically shifting by two bits the second concatenated copy of the FEC codeword relative to the first concatenated copy of the FEC codeword, wherein the encoded bits of the first and second copies of the FEC codewords are modulated on at least one OFDM symbol. techniques for header decoding include receiving a plurality of encoded bits comprising at least two concatenated copies of an FEC codeword, decoding a first copy of the FEC codeword to generate a first plurality of decoded bits, and decoding a second copy of the FEC codeword to generate a second plurality of decoded bits.Type: GrantFiled: May 20, 2010Date of Patent: June 7, 2016Assignee: APPLIED TRANSFORM, LLCInventor: Joon Bae Kim