Communications channel characterization device and...

Details Communications channel characterization device and... Communications channel characterization device and...

2006-08-01

2006-08-01

Nguyen, Lee (Department: 2618)

Telecommunications

Transmitter and receiver at separate stations

Having measuring, testing, or monitoring of system or part

C455S226200, C455S424000, C375S224000

Reexamination Certificate

active

07085539

ABSTRACT:
The system and method characterize a communications channel with respect to signal-to-noise ratio (SNR), time dispersion or multi-path, and frequency dispersion or Doppler spread. A probe signal demodulator receives a probe signal transmitted on a wireless communication channel and generates a demodulated probe signal, and a probe signal re-modulator generates a replica probe signal. A delay unit generates a delayed probe signal, and an adaptive canceller receives the delayed probe signal and the replica probe signal, and generates a residual noise signal and a channel characterization signal. A channel characterization block receives the channel characterization signal and the residual noise signal to generate channel measurements of the wireless communication channel.

REFERENCES:
patent: 6088383 (2000-07-01), Suzuki et al.
patent: 6654429 (2003-11-01), Li
patent: 2004/0165687 (2004-08-01), Webster et al.
patent: 2005/0037724 (2005-02-01), Walley et al.

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