US Patent Issued to SUN PATENT TRUST on Oct. 28 for "Transmission method, transmitter apparatus, reception method and receiver apparatus" (Japanese Inventors)

ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,457,139, issued on Oct. 28, was assigned to SUN PATENT TRUST (New York).

"Transmission method, transmitter apparatus, reception method and receiver apparatus" was invented by Yutaka Murakami (Kanagawa, Japan), Tomohiro Kimura (Osaka, Japan) and Mikihiro Ouchi (Osaka, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "Transmission quality is improved in an environment in which direct waves dominate in a transmission method for transmitting a plurality of modulated signals from a plurality of antennas at the same time. All data symbols used in data transmission of a modulated signal are precoded by hopping between precoding matrices so that the precodin...