METHOD AND APPARATUS FOR CREATING A COMPOSITE WAVEFORM

摘要

A method and apparatus is provided for creating a composite waveform. This composite waveform is created by coding a plurality of input digital information signals (201). Subsequently, the plurality of coded input digital information signals (231, 235, 237) are communicated over a communication medium (103) to a digital combiner 9105). The digital combiner (105) combines the plurality of coded input digital information signals. Finally, the digitally combined information signal is spectrally shaped to form a composite waveform (107). These composite waveform creation principals may be applied to digitally encoded voice subbands in a subband coding system as well as channel information in a direct sequence code division multiple access (DS-CDMA) communication system transmitter.