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:
Jan. 04, 2011
Filed:
Jun. 04, 2007
Chadi Abou Rjeily, Zahle, LB;
Chadi Abou Rjeily, Zahle, LB;
Commissariat a l'Energie Atomique, Paris, FR;
Abstract
A distributed space-time coding method for a UWB pulse telecommunication system, wherein a source terminal transmits a signal to a destination terminal during a transmission interval constituted by K frames, K≧1, each frame being divided into a first and a second half-frame, the signal transmitted in each first half-frame being received, then retransmitted after amplification during the next second half-frame by a distinct relay terminal among K relay terminals of the system. The source terminal codes 4K data symbols belonging to a PPM modulation alphabet or a composite PPM-PAM modulation alphabet including a plurality of time positions, to provide a sequence of four transmission symbols per frame, the transmission symbols being obtained from 4K linear combinations of the data symbols using a plurality of coefficients belonging to a real algebraic extension of degree 2K of the field of rational numbers and, for one of the transmission symbols, a permutation of its PPM components.