Resumes
Resumes
Sharif Shahrier Phones & Addresses
-
3726 Columbia Pike APT 3, Arlington, VA 22204 (703) 979-5511
-
3726 Columbia Pike, Arlington, VA 22204
-
Sayreville, NJ
-
8 Austin Ave, Somerset, NJ 08873
-
640 American Ave, King of Prussia, PA 19406
-
Theriot, LA
-
Austin, TX
-
North Brunswick, NJ
-
Kng Of Prussa, PA
-
3726 Columbia Pike APT 3, Arlington, VA 22204
Publications
Us Patents
Optimized Discrete Fourier Transform Method And Apparatus Using Prime Factor Algorithm
View pageUS Patent:
6704760, Mar 9, 2004
Filed:
Apr 11, 2002
Appl. No.:
10/120971
Inventors:
Ryan Samuel Buchert - Breinigsville PA
Sharif M. Shahrier - King of Prussia PA
Peter Becker - Coatesville PA
Sharif M. Shahrier - King of Prussia PA
Peter Becker - Coatesville PA
Assignee:
InterDigital Technology Corporation - Wilmington DE
International Classification:
G06F 1714
US Classification:
708405
Abstract:
An apparatus and method for DFT processing using prime factor algorithm (PFA) on a selected number P of midamble chip values received by a CDMA receiver, where P has a plurality M of relatively prime factors F, and the DFT process is divided into M successive F-point DFT processes. The P data values are retrieved from a single input port memory and selectively permuted by a controller into parallel caches to optimize factoring with associated twiddle factors stored in parallel registers. The permuted inputs are factored in two or more parallel PFA circuits that comprise adders and multipliers arranged to accommodate any size F-point DFT. The outputs of the PFA circuits are processed by consolidation circuitry in preparation for output permutation of the values which are sent to memory for subsequent DFT cycles.
Third Generation Fdd Modem Interleaver
View pageUS Patent:
6947491, Sep 20, 2005
Filed:
Jul 19, 2001
Appl. No.:
09/908820
Inventors:
Sharif M. Shahrier - King of Prussia PA, US
Assignee:
InterDigital Technology Corporation - Wilmington DE
International Classification:
H04L005/12
US Classification:
375262
Abstract:
A method and apparatus are disclosed for deinterleaving expanded interleaved data blocks, particularly for use in a wireless telecommunications system such as provided by the Third Generation Partnership Project (3G) standard. The data is processed on a sequential element basis where each element has a pre-determined number of bits M which bits are contained in a block of sequential data words W′. The elements are extracted from the block of words W′ in sequential order, each element being extracted from either a single or two sequential interleaved words within the set of words W′. The elements are stored in selective location within a set of words W of a deinterleaver memory such that upon completion of the extraction and writing of all the elements, the words W from the deinterleaver memory can be sequentially read out to correspond to an original data block of bits from which the block of interleaved elements was created. Additional conventional processing results in the contraction of the deinterleaved expanded words to reproduce the data block of bits in a receiver as originally designated for transmission in a transmitter.
Optimized Discrete Fourier Transform Method And Apparatus Using Prime Factor Algorithm
View pageUS Patent:
7028064, Apr 11, 2006
Filed:
Feb 19, 2004
Appl. No.:
10/782035
Inventors:
Ryan Samuel Buchert - Phoenixville PA, US
Sharif M. Shahrier - King of Prussia PA, US
Peter Becker - Coatesville PA, US
Sharif M. Shahrier - King of Prussia PA, US
Peter Becker - Coatesville PA, US
Assignee:
InterDigital Technology Corporation - Wilmington DE
International Classification:
G06F 17/14
US Classification:
708405
Abstract:
An apparatus and method for DFT processing using prime factor algorithm (PFA) on a selected number P of midamble chip values received by a CDMA receiver, where P has a plurality M of relatively prime factors F, and the DFT process is divided into M successive F-point DFT processes. The P data values are retrieved from a single input port memory and selectively permuted by a controller into parallel caches to optimize factoring with associated twiddle factors stored in parallel registers. The permuted inputs are factored in two or more parallel PFA circuits that comprise adders and multipliers arranged to accommodate any size F-point DFT. The outputs of the PFA circuits are processed by consolidation circuitry in preparation for output permutation of the values which are sent to memory for subsequent DFT cycles.
Method And System For A Low-Overhead Mobility Management Protocol In The Internet Protocol Layer
View pageUS Patent:
7136389, Nov 14, 2006
Filed:
Feb 20, 2002
Appl. No.:
10/078946
Inventors:
Sharif M. Shahrier - King of Prussia PA, US
Prabhakar R. Chitrapu - Blue Bell PA, US
Prabhakar R. Chitrapu - Blue Bell PA, US
Assignee:
InterDigital Technology Corporation - Wilmington DE
International Classification:
H04L 12/28
H04J 3/24
H04J 3/24
US Classification:
370400, 370389, 370475
Abstract:
A system and method for supporting mobile Internet communication is provided which employs a plurality of Routers and a plurality of Mobile Nodes (MNs). Each Router has a unique communication address. Each MN is associated with a home Router. Each Router has an associated Mobile Node Location List identifying each MN for which the Router is the home Router and the communication address of a Router corresponding to a current location of each such MN. Each MN is movable from an old location where the MN communicates with the Internet via one Router to a current location where the MN communicates with the Internet via a different Router. Communication at the current location via the different Router is established by communicating to the MN's home Router the communication address of the different Router as the communication address corresponding to the MN's current location. Accordingly, a data communication from a corresponding node (CN) to a selected MN is communicated to the selected MN by accessing the Mobile Node Location List of the selected MN's home Router to determine the communication address corresponding to the selected MN's current location and directing the data communication to that determined communication address.
Third Generation Fdd Modem Interleaver
View pageUS Patent:
7317762, Jan 8, 2008
Filed:
Jun 1, 2005
Appl. No.:
11/141961
Inventors:
Sharif M. Shahrier - King of Prussia PA, US
Assignee:
Interdigital Technology Corporation - Wilmington DE
International Classification:
H04L 23/02
US Classification:
375262, 375341, 714762
Abstract:
A method and apparatus are disclosed for deinterleaving expanded interleaved data blocks, particularly for use in a wireless telecommunications system such as provided by the Third Generation Partnership Project (3G) standard. The data is processed on a sequential element basis where each element has a pre-determined number of bits M which bits are contained in a block of sequential data words W′. The elements are extracted from the block of words W′ in sequential order, each element being extracted from either a single or two sequential interleaved words within the set of words W′. The elements are stored in selective location within a set of words W of a deinterleaver memory such that upon completion of the extraction and writing of all the elements, the words W from the deinterleaver memory can be sequentially read out to correspond to an original data block of bits from which the block of interleaved elements was created. Additional conventional processing results in the contraction of the deinterleaved expanded words to reproduce the data block of bits in a receiver as originally designated for transmission in a transmitter.
Bi-Directional And Reverse Directional Resource Reservation Setup Protocol
View pageUS Patent:
7400582, Jul 15, 2008
Filed:
Nov 4, 2002
Appl. No.:
10/288065
Inventors:
Kamel M. Shaheen - King of Prussia PA, US
Sharif M. Shahrier - King of Prussia PA, US
Sharif M. Shahrier - King of Prussia PA, US
Assignee:
InterDigital Technology Corporation - Wilmington DE
International Classification:
H04L 12/26
H04B 7/212
G06F 15/173
H04B 7/212
G06F 15/173
US Classification:
370231, 370348, 709226
Abstract:
The invention relates to establishing a wireless packet session between at least two users. At least one of the users is a wireless user. A first of the at least two users sends a reservation setup protocol (RSVP) PATH message to a second user of the two users. The RSVP PATH message includes information for reserving resources for transmissions from only the first user to the second user; or from the first user to the second user and the second user to the first user, or only for transmissions from the second user to the first user. In response to receiving the RSVP PATH message, the second user transmits a RSVP reservation (RESV) message to the first user. Transmissions occur using the reserved resources.
Method And System For A Low-Overhead Mobility Management Protocol In The Internet Protocol Layer
View pageUS Patent:
7573890, Aug 11, 2009
Filed:
Oct 4, 2006
Appl. No.:
11/542842
Inventors:
Sharif M. Shahrier - King of Prussia PA, US
Prabhakar R. Chitrapu - Blue Bell PA, US
Prabhakar R. Chitrapu - Blue Bell PA, US
Assignee:
InterDigital Technolgy Corporation - Wilmington DE
International Classification:
H04L 12/28
H04J 3/24
H04W 4/00
G06F 15/16
H04J 3/24
H04W 4/00
G06F 15/16
US Classification:
370400, 370331, 370389, 370475, 709219
Abstract:
A system and method for supporting mobile Internet communication is provided which employs a plurality of Routers and a plurality of Mobile Nodes (MNs). Each Router has a unique communication address. Each MN is associated with a home Router. Each Router has an associated Mobile Node Location List identifying each MN for which the Router is the home Router and the communication address of a Router corresponding to a current location of each such MN. Each MN is movable from an old location where the MN communicates with the Internet via one Router to a current location where the MN communicates with the Internet via a different Router. Communication at the current location via the different Router is established by communicating to the MN's home Router the communication address of the different Router as the communication address corresponding to the MN's current location. Accordingly, a data communication from a corresponding node (CN) to a selected MN is communicated to the selected MN by accessing the Mobile Node Location List of the selected MN's home Router to determine the communication address corresponding to the selected MN's current location and directing the data communication to that determined communication address.
Optimized Discrete Fourier Transform Method And Apparatus Using Prime Factor Algorithm
View pageUS Patent:
7720897, May 18, 2010
Filed:
Apr 7, 2006
Appl. No.:
11/400566
Inventors:
Ryan Samuel Buchert - Phoenixville PA, US
Sharif M. Shahrier - King of Prussia PA, US
Peter Edward Becker - Coatesville PA, US
Sharif M. Shahrier - King of Prussia PA, US
Peter Edward Becker - Coatesville PA, US
Assignee:
InterDigital Technology Corporation - Wilmington DE
International Classification:
G06F 17/14
US Classification:
708405
Abstract:
An apparatus and method for DFT processing using prime factor algorithm (PFA) on a selected number P of midamble chip values received by a CDMA receiver, where P has a plurality M of relatively prime factors F, and the DFT process is divided into M successive F-point DFT processes. The P data values are retrieved from a single input port memory and selectively permuted by a controller into parallel caches to optimize factoring with associated twiddle factors stored in parallel registers. The permuted inputs are factored in two or more parallel PFA circuits that comprise adders and multipliers arranged to accommodate any size F-point DFT. The outputs of the PFA circuits are processed by consolidation circuitry in preparation for output permutation of the values which are sent to memory for subsequent DFT cycles.