Multicarrier frequency hopping communications system

Details Multicarrier frequency hopping communications system Multicarrier frequency hopping communications system

1994-12-21

1996-08-20

Kizou, Hassan

Multiplex communications

Wide area network

Packet switching

370 20, 370 23, 375202, H04B 1713

Patent

active

055485820

ABSTRACT:
A multicarrier frequency hopping spread spectrum communications system wherein a transmitting station assigns encoded data symbols to particular ones of a predetermined series of fixed carrier frequencies, the frequency assignments being periodically mixed according to a frequency hopping code, and the encoded data symbols are combined with their assigned carrier frequencies in accordance with an inverse Fourier transform so as to multiplex the encoded data symbols by orthogonal frequency division modulation. A receiving station performs demultiplexing and de-mixing of such multiplexed signals in accordance with the inverse of the multiplexing and mixing performed at the transmitter. The system thereby provides frequency hopping operation without requiring a rapidly tunable and accurately phase controlled oscillator at each of the transmit/receive stations.

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J. G. Proakis, "Digital Communications", Chapter 8, pp. 845-860, McGraw-Hill Book Company (1989), New York.

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