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:
Dec. 10, 1996
Filed:
Jan. 21, 1994
Spase Drakul, Ljubljana, SI;
Ezio Biglieri, Turin, IT;
Other;
Abstract
Digital information is transmitted by generating coded signals in the form of pulses on the basis of binary digital information and decoding the coded signals into the binary digital information, the pulses being coded in the time domain and being of at least two distinctly different shapes with respect to their numerical amplitude variation along the time axis of the pulses, the pulses comprising two bits of information in each pulse having energy one, but coded in the way that one bit of information is in the polarity and one bit in the shape, or two bits are in the shape. Communications systems utilizing the coding design combine the advantageous properties of the systems of the power-limited region and the systems of the bandwidth-limited region, in other words, the technique of the system which use multiorthogonal signal constellation and the technique of the systems which use multilevel signal constellation are combined into one new class of systems with good power efficiency and good spectral efficiency. Error performance of the new class of systems is very close to the Shannon bound.