Patent ID: 6680928
Filing Date: 2004-01-20
Classification: H04B,H04J,H04L

Abstract:
A signal converter for use in a Code Division Multiple Access (CDMA) communications system utilizing multiple frequency channels for transmission, said signal converter comprising:a plurality of weighting multipliers each receiving a different one of a plurality of information signals for transmission in each of a plurality of frequency channels, each of said plurality of weighting multipliers multiplying its received information signal by a different sequence of frequency-channel-associated weights and developing a plurality of weighted information signals that are across-channel coded; a plurality of combiners each associated with a different one of the plurality of frequency channels, each of said plurality of combiners receiving a select weighted information signal from each of the plurality of weighting multipliers corresponding to different information signals and combining said select weighted information signals for transmission in the same one of said plurality of frequency channels to develop a plurality of combined weighted information signals; and a spread-spectrum coder receiving one of either (a) the plurality of information signals, or (b) the plurality of combined weighted information signals, and encoding the received signals using respective spread-spectrum access codes to develop one of either (a) a plurality of spread-spectrum information signals, or (b) a plurality of spread-spectrum combined weighted information signals, wherein the plurality of spread-spectrum information signals comprises the plurality of information signals received by the plurality of weighting multipliers when the spread-spectrum coder receives the plurality of information signals.