Method and apparatus for providing high data rate traffic channe

Details Method and apparatus for providing high data rate traffic channe Method and apparatus for providing high data rate traffic channe

1991-03-13

1993-04-20

Tarcza, Thomas H.

Pulse or digital communications

Repeaters

Testing

H04L 900

Patent

active

052048764

ABSTRACT:
A method and apparatus is provided for transmitting spread spectrum signals. The transmitter receives data bits at a particular rate. Subsequently, the transmitter encodes the received data bits at a predetermined encoding rate into data symbols. Subsequently, the transmitter derives predetermined length orthogonal codes from the data symbols. The transmitter accommodates variable received data bit rates by setting the predetermined encoding rate and the predetermined orthogonal code length in response to the received data bit rate. Subsequently, the transmitter spreads the derived orthogonal codes with a user PN spreading code.
An alternative method and apparatus is provided for transmitting spread spectrum signals. The transmitter receives data bits at a particular rate. Subsequently, the transmitter encodes the received data bits at a predetermined encoding rate into data symbols. Subsequently, the transmitter determines a particular channel to transmit the data symbols by spreading the data symbols with a predetermined length orthogonal code. The transmitter accommodates variable received data bit rates by setting the predetermined encoding rate and the predetermined orthogonal code length in response to the received data bit rate.

REFERENCES:
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patent: 4901307 (1990-02-01), Gilhousen et al.
patent: 5016255 (1991-05-01), Dixon et al.
"On the System Design Aspects of Code Division Multiple Access (CDMA) Applied to Digital Cellular and Personal Communication Networks", Allen Salmasi and Klein S. Gilhousen at the 41rd IEEE Vehicular Technology Conference, May 19-22, 1981 pp. 57-62.
"On the Capacity of a Cullular CDMA System", Klien Gilhousen, Irwin M. Jacobs, Roberto Padovani, Andrew Biterbi, Lindsay Weaver, Charles Wheately, IEEE Transactions on Vehicular Technology, vol. 40, No. 2 (May 1991), pp. 303-312.

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