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:
Jun. 15, 2010
Filed:
Dec. 05, 2006
Dimitri Ktenas, Fontaine, FR;
Mathieu Bouvier Des Noes, Grenoble, FR;
Dimitri Ktenas, Fontaine, FR;
Mathieu Bouvier Des Noes, Grenoble, FR;
Commissariat a l'Energie Atomique, Paris, FR;
Abstract
To select the frequency (S) and/or time (S) spreading parameters for a communication system using a quadrature amplitude modulation and implementing a CDMA technique and an OFDM multiplexing the attenuation coefficients of the propagation channel are estimated For all the F sub-bands of Ssubcarriers and the T blocks of SOFDM symbols, at least one asymptotic signal-to-interference+noise ratio (SINR) is determined, based on the attenuation coefficients of the propagation channel and the type of equalizer used by the receiver. From this, for each coded information block obtained from the modulation, the compressed asymptotic SINR is deduced, expressed by an analytical formula dependent on the frequency (S) and time (S) spreading parameters and the frequency (S) and time (S) spreading parameters which maximize the value of the compressed asymptotic SINR are selected.