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:
Nov. 02, 2010
Filed:
Dec. 15, 2009
Naofal Al-dhahir, Morris Twp., NJ (US);
Christine Fragouli, Madison, NJ (US);
William Turin, East Brunswick, NJ (US);
Naofal Al-Dhahir, Morris Twp., NJ (US);
Christine Fragouli, Madison, NJ (US);
William Turin, East Brunswick, NJ (US);
Other;
Abstract
A training sequence is created for space-time diversity arrangement, having any training sequence length, while limiting the training sequence to a standard constellation. Given a number of channel unknowns that need to be estimated, L, a training sequence can be creates that yields minimum means squared estimation error for lengths N=kN+L−1, for any positive integer k≧1, where Nis a selected perfect roots-of-unity sequence (PRUS) of length N. The training sequence is created by concatenating k of the length N perfect roots-of-unity sequences, followed by L−1 initial symbols of that same PRUS. Good training sequences can be created for lengths Nthat cannot be obtained through the above method by concatenating a requisite number of symbols found through an exhaustive search.