The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 30, 2011
Filed:
Sep. 18, 2006
Tsuyoshi Sugiura, Yokohama, JP;
Takahiro Sato, Yokohama, JP;
Tsuyoshi Sugiura, Yokohama, JP;
Takahiro Sato, Yokohama, JP;
Samsung Electronics Co., Ltd, , KR;
Abstract
A wireless transmitter and receiver increase a desired/unwanted (D/U) ratio of a correlation output without increasing the number of data in an ultra-wideband direct spread pulse communication system for transmitting and receiving two series of data through different spreading code streams. In the spreading codes used in matched filters of the wireless transmitter, (2*N−2)-th and (2*N)-th values of a cross-correlation signal between first and second spreading codes are greater than 0, (2*N−3)-th and (2*N+1)-th values of an auto-correlation signal of the first spreading code are less than 0, and (2*N−3)-th and (2*N+1)-th values of an auto-correlation signal of the second spreading code are less than 0. The peak value of the cross-correlation signal does not need to be small, and since a value other than the peak value does not become large, the D/U ratio can increase.