US 7949068

US Patent 7949068 (US7949068B2) details "Systems and methods for transmitter diversity."

Summary of US Patent 7949068:

• Title: Systems and methods for transmitter diversity
• Assignee: The current assignee is Integral Wireless Technologies LLC. The original assignee was Xocyst Transfer AG LLC.
• Inventors: Mark A Webster, Deniz Rende, Jim E. Petranovich
• Filing Date: February 1, 2010 (for application number US12/698,090)
• Issue Date: May 24, 2011
• Abstract: The patent describes methods and systems for expanding transmitter diversity. These involve taking a number of input data streams (K) and applying them to a larger number of antennas (N). This is achieved by sending each of the K data streams to its own "base" antenna, and then generating the remaining N-K data streams for "extension" antennas by cyclically shifting and combining the original K data streams.

Plain-Language Overview of Independent Claims:

• Claim 1 (System): This claim describes a system that includes a "transmit processor." This processor creates one or more "extension data streams" from a set of "base data streams." At least one of these extension streams is generated by performing a specific mathematical operation called "matrix multiplication" on the base data streams using a "unitary matrix." The transmit processor is connected to base antennas (which transmit the original base data streams) and expansion antennas (which transmit the newly generated extension data streams).
• Claim 9 (System - Means-Plus-Function): This claim is similar to Claim 1 but uses "means-plus-function" language. It describes a system with "means for generating" the extension data streams from base data streams, where at least one extension stream is derived through matrix multiplication with a unitary matrix. This "means for generating" is connected to "means for transmitting" the base data streams and "means for transmitting" the extension data streams.
• Claim 17 (Method): This claim outlines a method for achieving transmitter diversity. It involves generating one or more extension data streams from a set of base data streams, where at least one extension stream results from a matrix multiplication of the base data streams with a unitary matrix. Subsequently, each of these base and extension data streams is transmitted from its own dedicated transmit antenna.

Litigation and Legal Status Note:
According to Google Patents, the patent US7949068B2 has a legal status of "Expired - Lifetime" as of April 26, 2026. There are multiple active litigations associated with the patent family, with cases filed in the Texas Western District Court (case 7:26-cv-00121), Texas Eastern District Court (cases 2:25-cv-01152 and 2:25-cv-00644), and Florida Southern District Court (case 0:25-cv-62546). "First worldwide family litigation filed" is also noted. As of today's date, May 25, 2026, the patent is indicated as expired.

I could not find any specific dockets for patent 7949068 in the CAFC 2026 dockets using general web search, but the Google Patents data indicates district court litigation within 2025 and 2026.The search for "US patent 7949068 CAFC 2026 dockets" did not yield any specific dockets for this patent at the Court of Appeals for the Federal Circuit (CAFC) in 2026. The search results provided general information about CAFC cases in 2026, including a decision regarding coinventorship and discussions on the Supreme Court's IP docket.

Therefore, based on the provided patent text and the web search, I do not have authoritative information indicating any specific CAFC 2026 dockets directly involving US patent 7949068. The litigation mentioned in the Google Patents information for US7949068B2 pertains to District Courts (Texas Western, Texas Eastern, Florida Southern) and "First worldwide family litigation."