Zero-overhead symbol rate adaptation system for OVSF code

Details Zero-overhead symbol rate adaptation system for OVSF code Zero-overhead symbol rate adaptation system for OVSF code

2007-01-23

2007-01-23

Chin, Stephen (Department: 2634)

Pulse or digital communications

Spread spectrum

C370S320000, C375S225000

Reexamination Certificate

active

09718985

ABSTRACT:
A communication system transmits orthogonally encoded data at a symbol rate which is selected from a plurality of symbol rates. The data is encoded in a plurality of packets, each packet having a plurality of symbols having signal points in a field. The signal points of consecutively transmitted symbols are correlated unless the rate is changed, and the data is encoded such that only particular orthogonal descendants of a selected maximum rate code are used. The encoded data is transmitted to a receiver, and orthogonally decoded. A change in the rate of data transmission is recognized when the signal points of consecutively transmitted symbols are not correlated.

REFERENCES:
patent: 6370672 (2002-04-01), Rick et al.
patent: 6400755 (2002-06-01), Harris et al.
patent: 6463097 (2002-10-01), Held et al.
patent: 6466566 (2002-10-01), De Gaudenzi et al.
patent: 6574289 (2003-06-01), Tran et al.
patent: 6658076 (2003-12-01), Hayata

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