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.

Date of Patent:
Mar. 31, 2015

Filed:

Jul. 22, 2008
Applicants:

Masafumi Tsutsui, Kawasaki, JP;

Hiroyuki Seki, Kawasaki, JP;

Inventors:

Masafumi Tsutsui, Kawasaki, JP;

Hiroyuki Seki, Kawasaki, JP;

Assignee:

Fujitsu, Limited, Kawasaki, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04W 72/00 (2009.01); H04B 7/04 (2006.01); H04B 7/06 (2006.01); H04B 7/08 (2006.01);
U.S. Cl.
CPC ...
H04B 7/0413 (2013.01); H04B 7/0417 (2013.01); H04B 7/0632 (2013.01); H04B 7/088 (2013.01);
Abstract

A wireless transmitter controls the number of transmission beams to be formed for transmitting a data stream depending on the number of data streams to be transmitted, and a wireless receiver selectively receives any one or more of the transmission beam from the transmission beams. In this manner, by changing the number of transmission beams (the original number of beams selectable on the receiving side) to be formed depending on the number of transmitting data streams, high throughput characteristics by a low interbeam correlation at the time of the multistream transmission and a large directional gain at the time of a single stream may be achieved.


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