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Cancellation of interference in a communication system with application to s-cdma

USPTO Application #: 20080291980
Title: Cancellation of interference in a communication system with application to s-cdma
Abstract: Cancellation of interference in a communication system with application to S-CDMA. A relatively straight-forward implemented and computationally efficient approach of selecting a predetermined number of unused codes is used to perform weighted linear combination selectively with each of the input spread signals in a multiple access communication system. If desired, the predetermined number of unused codes is always the same in each implementation. Alternatively, the predetermined number of unused codes is selected from within a reordered code matrix using knowledge that is shared between the two ends of a communication system, such as between the CMs and a CMTS. While the context of an S-CDMA communication system having CMs and a CMTS is used, the solution is generally applicable to any communication system that seeks to cancel narrowband interference. Several embodiments are also described that show the generic applicability of the solution across a wide variety of systems. (end of abstract)



USPTO Applicaton #: 20080291980 - Class: 375148 (USPTO)

Cancellation of interference in a communication system with application to s-cdma description/claims


The Patent Description & Claims data below is from USPTO Patent Application 20080291980, Cancellation of interference in a communication system with application to s-cdma.

Brief Patent Description - Full Patent Description - Patent Application Claims
  monitor keywords CROSS REFERENCE TO RELATED PATENTS/PATENT APPLICATIONS Continuation Priority Claim, 35 U.S.C. § 120

The present U.S. Utility Patent Application claims priority pursuant to 35 U.S.C. § 120, as a continuation, to the following U.S. Utility Patent Application which is hereby incorporated herein by reference in its entirety and made part of the present U.S. Utility Patent Application for all purposes:

1. U.S. Utility application Ser. No. 10/142,189, entitled “Cancellation of interference in a communication system with application to S-CDMA,” (Attorney Docket No. BP2285), filed May 8, 2002, pending, which claims priority pursuant to 35 U.S.C. § 119(e) to the following U.S. Provisional Patent Application which is hereby incorporated herein by reference in its entirety and made part of the present U.S. Utility Patent Application for all purposes: 1. U.S. Provisional Application Ser. No. 60/367,564, entitled “Cancellation of interference in a communication system with application to S-CDMA,” (Attorney Docket No. BP2285), filed Mar. 26, 2002.

Parent's Continuation-in-Part (CIP) Priority Claim, 35 U.S.C. § 120

The U.S. Utility application Ser. No. 10/142,189, from which the present U.S. Utility Patent Application is a continuation, also claims priority pursuant to 35 U.S.C. § 120, as a continuation-in-part (CIP), to the following U.S. Utility Patent Application which is hereby incorporated herein by reference in its entirety and made part of the present U.S. Utility Patent Application for all purposes:

1. U.S. Utility application Ser. No. 09/652,721, entitled “Subdimensional single carrier modulation,” (Attorney Docket No. BP 1140), filed Aug. 31, 2000, now U.S. Pat. No. 6,778,611 B1, issued on Aug. 17, 2004, which claims priority pursuant to 35 U.S.C. § 119(e) to the following U.S. Provisional Patent Application which is hereby incorporated herein by reference in its entirety and made part of the present U.S. Utility Patent Application for all purposes: 1. U.S. Provisional Application Ser. No. 60/151,680, entitled “Subdimensional single carrier modulation,” (Attorney Docket No. BP2285), filed Aug. 31, 1999.



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Patent Applications in related categories:

20090290617 - Method and apparatus for computing sir of time varying signals in a wireless communication system - A method and apparatus for correcting symbols of a common pilot channel (CPICH) to generate an accurate signal-to-interference ratio (SIR) estimate in a wireless communication system are disclosed. In one embodiment, a non-stationary mean of a group of the CPICH symbols is estimated, the CPICH symbols are delayed, and the ...


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