US6798736B1

3G

Title:

Method and apparatus for transmitting and receiving variable rate data

Application Number:

US19980158254

Family ID:

55

Publication Date:

28-09-2004

Application Date:

22-09-1998

Priority Date:

22-09-1998

Current Assignee:

QUALCOMM INC

Declaring Company:

QUALCOMM INC

Abstract  Abstract

A variable rate transmission system transmits a variable rate data packet including an accompanying rate indication signal indicative of the transmission rate of the variable data packet. The data packet can be spread using a long pseudonoise (PN) code the mask of which can be selected in accordance with the transmission rate of the variable rate data packet. A preamble providing the transmission rate can be punctured into an outgoing pilot signal. The rate indication signal can be encoded in accordance with a set of orthogonal functions that are part of the indication of the transmission rate of the data packet.