US Patent No: 8,155,224

Number of patents in Portfolio can not be more than 2000

Transmission method, transmission apparatus, and reception apparatus

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Abstract

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A transmission method for transmitting modulation signals of a plurality of channels to the same frequency band from a plurality of antennas. At the time when a symbol used for demodulation is inserted in a channel, in another channel symbol, the same phase and quadrature signals in the in-phase-quadrature plane are made to be zero signals. Thus, a plurality of modulation signals are multiplexed and transmitted and the transmitted multiplexed modulation signals are demultiplexed and demodulated at a reception apparatus, thereby improving the data transmission rate.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
WI-FI ONE, LLCPLANO, TX104

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Matsuoka, Akihiko Yokohama, JP 163 1522
Murakami, Yutaka Kawasaki, JP 348 2046
Orihashi, Masayuki Ichikawa, JP 174 1462

Cited Art Landscape

Patent Info (Count) # Cites Year
 
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SONY CORPORATION (1)
6,888,789 Transmitting apparatus, receiving apparatus, communication system, transmission method, reception method, and communication method 50 2000
 
NOKIA TECHNOLOGIES OY (1)
2002/0172,293 Non-zero complex weighted space-time code for multiple antenna transmission 47 2001
 
Sony Deutschland GmbH (1)
7,221,645 Pilot pattern design for a STTD scheme in an OFDM system 29 2001
 
HITACHI, LTD. (1)
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MOTOROLA SOLUTIONS, INC. (1)
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AT&T WIRELESS SERVICES, INC. (1)
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NEC CORPORATION (4)
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6,006,072 Method and apparatus for interference cancellation 19 1998
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GOOGLE TECHNOLOGY HOLDINGS LLC (1)
7,139,237 Method and system for multirate multiuser modulation 29 2001
 
APPLE INC. (8)
6,850,481 Channels estimation for multiple input--multiple output, orthogonal frequency division multiplexing (OFDM) system 128 2000
6,985,434 Adaptive time diversity and spatial diversity for OFDM 182 2000
7,009,931 Synchronization in a multiple-input/multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) system for wireless applications 60 2000
7,233,625 Preamble design for multiple input--multiple output (MIMO), orthogonal frequency division multiplexing (OFDM) system 104 2001
7,336,601 Adaptive time diversity and spatial diversity for OFDM 21 2005
2007/0036,069 Adaptive time diversity and spatial diversity for OFDM 18 2006
7,403,570 Preamble design for multiple input--multiple output (MIMO), orthogonal frequency division multiplexing (OFDM) system 29 2007
2008/0002,568 Adaptive time diversity and spatial diversity for OFDM 23 2007
 
UNWIRED PLANET, LLC (1)
6,888,903 Digital communication receiver and a method for the operation thereof 19 2000
 
WI-FI ONE, LLC (4)
6,625,111 OFDM communication apparatus 45 2000
6,993,092 Transmission apparatus, reception apparatus and digital radio communication method 30 2000
2004/0240,571 Transmission method, transmission apparatus, and reception apparatus 24 2004
7,359,457 Transmission apparatus, reception apparatus and digital radio communication method 13 2004
 
RPM PARTNERSHIP (1)
2002/0065,047 Synchronization, channel estimation and pilot tone tracking system 126 2001
 
QUALCOMM INCORPORATED (2)
6,473,467 Method and apparatus for measuring reporting channel state information in a high efficiency, high performance communications system 556 2000
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BLACKBERRY LIMITED (1)
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ALCATEL-LUCENT USA INC. (1)
6,058,105 Multiple antenna communication system and method thereof 113 1997
 
SUN PATENT TRUST (3)
6,748,023 Apparatus and method for digital wireless communications 21 2003
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FUJITSU LIMITED (2)
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ERICSSON INC. (1)
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Ryuji Kohno (1)
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DENSO CORPORATION (1)
7,099,265 OFDM communication system and transmitter-receiver for use in the system 32 2001
 
INTEL CORPORATION (1)
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NIPPON TELEGRAPH AND TELEPHONE CORPORATION (2)
5,280,537 Digital communication system using superposed transmission of high speed and low speed digital signals 274 1992
7,242,720 OFDM signal communication system, OFDM signal transmitting device and OFDM signal receiving device 49 2002
 
Varco I/P, Inc. (1)
6,205,166 CDMA receiver with antenna array adaptively controlled with combined errors of despread multipath components 36 1998
 
PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA (2)
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7,266,167 Reception apparatus 18 2002
 
SONOCO DEVELOPMENT, INC. (1)
7,131,380 EB pattern profile printing 7 2001
 
AT&T CORP. (1)
* 6,654,429 Pilot-aided channel estimation for OFDM in wireless systems 144 1999
* Cited By Examiner

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
WI-FI ONE, LLC (4)
8,891,678 Receiving apparatus and receiving method 0 2013
* 8,744,005 Method and apparatus for generating modulation signals 1 2013
9,048,988 Transmission signal generation apparatus, transmission signal generation method, reception signal generation apparatus, and reception signal generation method 0 2013
8,934,578 Method of demodulating modulation signals 0 2014
 
PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA (2)
8,982,998 Transmission and reception apparatus and method 0 2014
9,160,596 Transmission and reception signal processor and method 0 2015
* Cited By Examiner

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