Patents by Inventor Stephen Alan Allpress
Stephen Alan Allpress 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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Patent number: 7454684Abstract: An apparatus and method is disclosed for decoding a received sequence of symbols using a decoding process that comprises a plurality of decoder iterations. According to one embodiment of the invention, a method comprises determining whether a pre-determined decoder termination threshold metric has been met; only if the threshold metric has been met, determining whether a decoder termination test based on a cyclic redundancy check code has been passed; and, only if the cyclic redundancy check test has been passed, terminating the decoder iterations.Type: GrantFiled: April 16, 2004Date of Patent: November 18, 2008Assignee: Icera, Inc.Inventor: Stephen Alan Allpress
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Patent number: 7424071Abstract: A decoder for use in a wireless communication device, the decoder comprising a correlator for correlating a received data sequence with a set of codewords such that a correlation value is generated for each correlation, wherein the set of codewords correspond to possible codewords that could be generated from encoding bit sequences having a predetermined number of information bits; a selector for selecting a first correlation value and a second correlation value generated by the correlator and for subtracting the second correlation value from the first correlation value to generate a third value; and a comparator for comparing the third value with a predetermined value to generate a decoding reliability indicator.Type: GrantFiled: June 27, 2005Date of Patent: September 9, 2008Assignee: ICERA Inc.Inventors: Stephen Alan Allpress, Carlo Luschi
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Publication number: 20040260995Abstract: An apparatus and method is disclosed for decoding a received sequence of symbols using a decoding process that comprises a plurality of decoder iterations. According to one embodiment of the invention, a method comprises determining whether a pre-determined decoder termination threshold metric has been met; only if the threshold metric has been met, determining whether a decoder termination test based on a cyclic redundancy check code has been passed; and, only if the cyclic redundancy check test has been passed, terminating the decoder iterations.Type: ApplicationFiled: April 16, 2004Publication date: December 23, 2004Inventor: Stephen Alan Allpress
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Patent number: 6744778Abstract: A time division multiple access communication system is disclosed, in which down link data are transmitted over a data channel in repeated time frames each containing a plurality of time slots. Down link set up information is transmitted over a control channel to indicate from which time slot a user terminal should extract data. Each frame on the data channel includes a user packet flag to indicate whether or not each time slot in the frame contains data. Each user terminal is responsive to the set up information and to the user packet flags to extract data from its assigned time slot in those frames which the slot is indicated to contain data.Type: GrantFiled: March 4, 1999Date of Patent: June 1, 2004Assignee: Lucent Technologies Inc.Inventors: Stephen Alan Allpress, Qiang Cao, Lorenz Fred Freiberg, Jie Lin, Steven Andrew Wood
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Patent number: 6496546Abstract: A technique for receiving and transmitting wireless telecommunications through use of a generic architecture is disclosed. The present invention mitigates the complexity of different transceiver operations by allowing a generic architecture to be used in a variety of situations with different channels and different telecommunications standards. An illustrative embodiment of the present invention comprises: receiving uplink analog RF signals at a base station; converting the uplink analog wide-band RF signals into IF uplink digital signals at an analog-to-digital converter; converting the IF uplink digital signals into a number of uplink channels; and demodulating selected narrow-band uplink channels from the total number of narrow-band uplink channels.Type: GrantFiled: July 15, 1998Date of Patent: December 17, 2002Assignee: Lucent Technologies Inc.Inventors: Stephen Alan Allpress, Sridhar Arunachalam, Reza Mardani, Carmine James Pagano, II, Joseph Anthony Tarallo, Tiejun Shan
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Transmitter architecture employing space time spreading and orthogonal transmit diversity techniques
Patent number: 6392988Abstract: Disclosed is a common transmitter architecture having incorporated both open loop transmit diversity schemes using a plurality of binary switches. Employment of binary switches allows for the sharing of certain components whether the transmitter is utilizing a orthogonal transmit diversity (OTD) scheme or a space time spreading (STS) scheme. Accordingly, the number of components in the transmitter is minimized and the complexity of the transmitter is simple enough to be implemented into a single application specific integrated chip.Type: GrantFiled: September 13, 1999Date of Patent: May 21, 2002Assignee: Lucent Technologies Inc.Inventors: Stephen Alan Allpress, R. Michael Buehrer, Quinn Li, Nallepilli S. Ramesh, Robert Atmaram Soni -
Patent number: 6317410Abstract: Disclosed is a receiver transmitter architecture having incorporated both open loop transmit diversity schemes using a plurality of binary switches. Employment of binary switches allows for the sharing of certain components whether the receiver is utilizing a orthogonal transmit diversity (OTD) scheme or a space time spreading (STS) scheme. Accordingly, the number of components in the receiver is minimized and the complexity of the receiver is simple enough to be implemented into a single application specific integrated chip.Type: GrantFiled: September 13, 1999Date of Patent: November 13, 2001Assignee: Lucent Technologies Inc.Inventors: Stephen Alan Allpress, R. Michael Buehrer, Robert Atmaram Soni
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Patent number: 6195537Abstract: A block radio design is disclosed that prevents the primary analog-to-digital converter from saturating and thus prevents the introduction of intermodulation products into the multi-carrier signal. The block radio comprises a strong signal suppressor that selectively suppresses any carrier signal in the multi-carrier signal before the multi-carrier signal is digitized by the analog-to-digital converter, thus preventing the possibility that the analog-to-digital converter can be saturated. Furthermore, the strong signal suppressor attenuates the stronger carrier signals without affecting the weaker carrier signals.Type: GrantFiled: September 25, 1997Date of Patent: February 27, 2001Assignee: Lucent Technologies, Inc.Inventors: Stephen Alan Allpress, Carmine James Pagano, Joseph Anthony Tarallo
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Patent number: 5956345Abstract: A plurality of modulated signals are generated for a data stream. Each modulated signal, which contains all of the information in the data stream, is generated at a different carrier frequency. The modulated signals are combined for transmission as a multi-band signal. In one embodiment, the modulated signals are compatible with signals generated in accordance with the IS-95 telecommunications standard. According to this embodiment, wideband data streams are combined with code sequences that are based on the same Walsh code sequences used to generate IS-95 signals. Each wideband data stream is encoded using either a particular Walsh code sequence or its logical negation to generate one coded stream for each carrier frequency used to generate the IS-95 signals.Type: GrantFiled: September 13, 1996Date of Patent: September 21, 1999Assignee: Lucent Technologies Inc.Inventors: Stephen Alan Allpress, Nallepilli S. Ramesh
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Patent number: 5920552Abstract: A flexible communications systems provides users with additional communication channels without requiring additional transmitters or receivers by using variable rate Walsh coding. Additionally, the assignment of these additional communication channels is easily managed at the base station by monitoring data backlog and receiver error rates.Type: GrantFiled: May 30, 1996Date of Patent: July 6, 1999Assignee: Lucent Technologies, Inc.Inventors: Stephen Alan Allpress, Christopher Nicholas Malvone, Francis Edward O'Brien, Lawrence Howard Ozarow
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Patent number: RE42453Abstract: A decoder for use in a wireless communication device, the decoder comprising a correlator for correlating a received data sequence with a set of codewords such that a correlation value is generated for each correlation, wherein the set of codewords correspond to possible codewords that could be generated from encoding bit sequences having a predetermined number of information bits; a selector for selecting a first correlation value and a second correlation value generated by the correlator and for subtracting the second correlation value from the first correlation value to generate a third value; and a comparator for comparing the third value with a predetermined value to generate a decoding reliability indicator.Type: GrantFiled: August 5, 2010Date of Patent: June 14, 2011Assignee: Icera Inc.Inventors: Stephen Alan Allpress, Carlo Luschi