Title of Invention

FRACTIONALLY-SPACED EQUALIZERS FOR SPREAD SPECTRUM WIRELESS COMMUNICATION

Abstract This disclosure describes equalization techniques for spread spectrum wireless communication. The techniques may involve estimating a channel impulse response, estimating channel variance, and selecting filter coefficients for an equalizer based on the estimated channel impulse response and the estimated channel variance. Moreover, in accordance with this disclosure, the channel variance estimation involves estimation of two or more co-variances for different received samples. Importantly, the equalizer is 'fractionally spaced' which means that the equalizer defines fractional filtering coefficients (filter taps), unlike conventional equalizers that presume that filter coefficients are defined at integer chip spacing. The techniques can allow the equalizer to account for antenna diversity, such as receive diversity, transmit diversity, or possibly both.
Full Text A number of spread spectrum wirless communication techniques have been developed. For example, one common spread spectrum technique used in wirless communication...........................

Documents:

562-MUMNP-2008-ABSTRACT(25-3-2008).pdf

562-MUMNP-2008-CLAIMS(25-3-2008).pdf

562-MUMNP-2008-CLAIMS(AMENDED)-(25-2-2013).pdf

562-MUMNP-2008-CLAIMS(AMENDED)-(29-6-2012).pdf

562-MUMNP-2008-CLAIMS(MARKED COPY)-(25-2-2013).pdf

562-MUMNP-2008-CORRESPONDENCE 12-6-2008.pdf

562-MUMNP-2008-CORRESPONDENCE(12-2-2013).pdf

562-MUMNP-2008-CORRESPONDENCE(12-6-2008).pdf

562-MUMNP-2008-CORRESPONDENCE(17-9-2008).pdf

562-MUMNP-2008-CORRESPONDENCE(4-9-2012).pdf

562-MUMNP-2008-DESCRIPTION(COMPLETE)-(25-3-2008).pdf

562-MUMNP-2008-DRAWING(25-3-2008).pdf

562-MUMNP-2008-DRAWING(29-6-2012).pdf

562-MUMNP-2008-EP DOCUMENT(29-6-2012).pdf

562-MUMNP-2008-FORM 1(25-3-2008).pdf

562-MUMNP-2008-FORM 1(29-6-2012).pdf

562-MUMNP-2008-FORM 1(4-9-2012).pdf

562-MUMNP-2008-FORM 13(4-9-2012).pdf

562-MUMNP-2008-FORM 18(2-5-2008).pdf

562-MUMNP-2008-FORM 2(COMPLETE)-(25-3-2008).pdf

562-MUMNP-2008-FORM 2(TITLE PAGE)-(25-3-2008).pdf

562-MUMNP-2008-FORM 26(12-6-2008).pdf

562-MUMNP-2008-FORM 26(29-6-2012).pdf

562-MUMNP-2008-FORM 3(17-9-2008).pdf

562-MUMNP-2008-FORM 3(25-3-2008).pdf

562-MUMNP-2008-FORM 5(25-3-2008).pdf

562-MUMNP-2008-MARKED COPY(29-6-2012).pdf

562-MUMNP-2008-POWER OF ATTORNEY 12-6-2008.pdf

562-MUMNP-2008-REPLY TO EXAMINATION REPORT(29-6-2012).pdf

562-MUMNP-2008-REPLY TO HEARING(25-2-2013).pdf

562-MUMNP-2008-SPECIFICATION(AMENDED)-(25-2-2013).pdf

562-MUMNP-2008-SPECIFICATION(AMENDED)-(29-6-2012).pdf

562-MUMNP-2008-US DOCUMENT29-6-2012).pdf

562-MUMNP-2008-WO INTERNATIONAL PUBLICATION REPORT(25-3-2008).pdf

abstract1.jpg


Patent Number 255740
Indian Patent Application Number 562/MUMNP/2008
PG Journal Number 12/2013
Publication Date 22-Mar-2013
Grant Date 19-Mar-2013
Date of Filing 25-Mar-2008
Name of Patentee QUALCOMM INCORPORATED
Applicant Address 5775 MOREHOUSE DRIVE, SAN DIEGO, CALIFORNIA 92121-1714,
Inventors:
# Inventor's Name Inventor's Address
1 SUBRAHMANYA, PARVATHANATHAN 468 MADERA AVENUE, #1 SUNNYVALE, CALIFORNIA 94086,
2 KANG, INYUP 4257 Calle Isabelino San Diego California 92130 USA
3 FEI, JIA 7393 Via Rivera San Diego California 92129 USA.
4 SUNDARESAN, RAJESH 3480 Granada Venue #270 Santa Clara California 95051 USA.
PCT International Classification Number H04B1/707
PCT International Application Number PCT/US2006/036137
PCT International Filing date 2006-09-15
PCT Conventions:
# PCT Application Number Date of Convention Priority Country
1 11/502,178 2006-08-09 U.S.A.
2 60/717,785 2005-09-15 U.S.A.