MIMO passive channel emulator

Details MIMO passive channel emulator MIMO passive channel emulator

2006-11-08

2010-10-05

Appiah, Charles N (Department: 2617)

Telecommunications

Transmitter and receiver at same station

Radiotelephone equipment detail

C702S010000, C702S010000, C703S023000, C703S024000, C703S025000, C455S067140

Reexamination Certificate

active

07809404

ABSTRACT:
Embodiments of methods and means for passively emulating channels in a multiple-input multiple output (MIMO) system are provided. Such embodiments include passively splitting a plurality of radio frequency signals into a greater plurality of such signals. Each of the greater plurality of radio frequency signals can then be selectively and passively attenuated, delayed and/or phase shifted. The resulting modified radio frequency signals are then recombined crossed over channels and coupled to a plurality of output nodes. Economical and versatile device and system testing is thus facilitated in a low-noise radio frequency environment without the need for complex up/down frequency or analog/digital conversions.

REFERENCES:
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patent: 6600382 (2003-07-01), Klymyshyn
patent: 7154959 (2006-12-01), Erceg et al.
patent: 7359449 (2008-04-01), Feher
patent: 2005/0276339 (2005-12-01), Chow et al.
patent: 2006/0088114 (2006-04-01), Chen et al.
patent: 2002093299 (2002-12-01), None
Elektrobit Group, “Propsim C8 -Multichannel Emulator”, http://www.propsim.com/index.php?1982, (Sep. 15, 2005).

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