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:
Apr. 23, 2013
Filed:
Nov. 05, 2010
Ramesh Annavajjala, Quincy, MA (US);
Philip Orlik, Cambridge, MA (US);
Ramesh Annavajjala, Quincy, MA (US);
Philip Orlik, Cambridge, MA (US);
Mitsubishi Electric Research Laboratories, Inc., Cambridge, MA (US);
Abstract
Symbols are encoded in a transmitter of a wireless network that uses multiple-input and multiple-output (MIMO) orthogonal frequency division multiplexing (MIMO-OFDM) by partitioning the sub-carriers to be used for transmitting the symbol into a set of K groups of contiguous sub-carriers. For each group k of N−1 modulation symbols D(1), D(2), . . . , D(N−1), the modulation symbol D(n), for group k, is mapped to a corresponding mapped modulation symbols X(n) according to X(n)=α(k)(D(n)−m(k))+β(k) n=1, . . . , N−1, X(N)=α(k)m(k), where m(k) is a sample-mean of the set of modulation symbols corresponding to the kgroup, α(k), α(k) and β(k), for k=1, . . . , K, are constants, wherein the constants are predetermined and positive.