Method and apparatus for modulation differentiation

Details Method and apparatus for modulation differentiation Method and apparatus for modulation differentiation

1998-06-26

1999-06-15

Bocure, Tesfaldet

Pulse or digital communications

Testing

4552262, H04B 346, H04B 1700

Patent

active

059129220

ABSTRACT:
To differentiate between different types of modulation, a fast RSSI detector performs a RSSI measurement on a received signal. The output of the RSSI detector is sampled over a sampling window and generates sampled values. A processor calculates absolute values of piecewise first derivatives of the sampled values and sums the result to create a summation constant. A modulation detector determines the type of modulation based on the value of the summation constant and an RSSI compensation calculates a compensation factor to correct the RSSI measurement.

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EPO Search Report, Apr. 15, 1998, RS 100279 US.
PCT Search Report, Sep. 14, 1998, PCT/U:S 98/11338.
J. I. Portillo-Garcia, et al., "A Microcomputer-Based General Architecture for Radiocommunication Signal Classification and Digital Demodulation", Signal Processing V Sep. 18, 1990 pp. 1919-1922.
Chung, et al., "Envelope-Based Classification Schemes for Continuous-Phase Binary Frequency-Shift-Keyed Modulations", 1994 Military Communications Conference, Oct. 2, 1994, pp. 796-800.

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