MIMO wireless data communication system, MIMO wireless data...

Details MIMO wireless data communication system, MIMO wireless data... MIMO wireless data communication system, MIMO wireless data...

2007-04-17

2010-10-19

Wang, Ted M (Department: 2611)

Pulse or digital communications

Systems using alternating or pulsating current

Plural channels for transmission of a single pulse train

C375S260000, C375S299000, C375S347000, C370S334000, C455S101000

Reexamination Certificate

active

07817741

ABSTRACT:
In a MIMO wireless communication system, the transformation process synthesizes the eigenmodes having a large singular value (i.e. a high effective SNR) and the eigenmodes having a small singular value (i.e. a low effective SNR). Thereby, the former eigenmodes are converted into modes having suppressed effective SNR which do not require a large number of levels of modulation, and the latter eigenmodes are converted into modes having increased effective SNR instead. In a MIMO wireless communication system for eigenmode transmission, a large communication capacity is realized without increasing the number of levels of modulation even in a communication environment capable of achieving a high SNR.

REFERENCES:
patent: 6888809 (2005-05-01), Foschini et al.
patent: 7346115 (2008-03-01), Howard et al.
patent: 7418053 (2008-08-01), Perlman et al.
patent: 7493092 (2009-02-01), Shida et al.
patent: 2005/0095996 (2005-05-01), Takano
patent: 2005-323217 (2004-05-01), None
Yasuhiko Tanabe et al., “A Study on Transmit Method of MIMO-OFDM Considering Nonlinear Distortion”, The Institute of Electronics, Information and Communication Engineers (IEICE), 2005 General Conference, p. 528 in Japanese, and pp. 1-5 English translation.

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