Orthogonal code division multiple access communication system ha

Details Orthogonal code division multiple access communication system ha Orthogonal code division multiple access communication system ha

1994-12-08

1998-03-17

Tse, Young T.

Pulse or digital communications

Repeaters

Testing

375202, 375260, 375308, 375344, 370204, 370206, 370209, 370210, 370342, H04B 1707, H04B 1713, H04L 2732

Patent

active

057295700

ABSTRACT:
An orthogonal code division multiple access (OCDMA) communication system having multicarrier modulation. The incoming input data stream is broken into multiple parallel streams, each of which modulates its own frequency-division multiplexed carrier. This reduces the chipping rate such that the delay spread does not cause excessive access noise. Particularly robust delay lock loop (DLL) code tracking and particularly robust automatic frequency control (AFC) are provided in the presence of frequency-selective fading.

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patent: 5477195 (1995-12-01), Spilker
patent: 5574721 (1996-11-01), Magill

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