초록 ▼

A novel and improved method for implementing a high-transmission-rate over-the-air interface is described. A transmit system provides an in-phase channel set and a quadrature-phase channel set. The in-phase channel set is used to provide a complete set of orthogonal medium rate control and traffic c

A novel and improved method for implementing a high-transmission-rate over-the-air interface is described. A transmit system provides an in-phase channel set and a quadrature-phase channel set. The in-phase channel set is used to provide a complete set of orthogonal medium rate control and traffic channels. The quadrature-phase channel set is used to provide a high-rate supplemental channel and an extended set of medium rate channels that are orthogonal to each other and the original medium rate channels. The high-rate supplemental channel is generated over a set of medium rate channels using a short channel code. The medium rate channel are generated using a set of long channel codes.

대표청구항 ▼

[ We claim:] [6.] A direct sequence spread spectrum communications system comprising:first long channel code modulator for generating first channel data in response to first user data;first short channel code modulator for generating second channel data in response to second user data;first in-phase

[ We claim:] [6.] A direct sequence spread spectrum communications system comprising:first long channel code modulator for generating first channel data in response to first user data;first short channel code modulator for generating second channel data in response to second user data;first in-phase spreader for generating first in-phase data in response to said first channel data;second in-phase spreader for generating second in-phase data in response to said second channel data;first quadrature-phase spreader for generating first quadrature-phase data in response to said first user data;second quadrature-phase spreader for generating second quadrature-phase data in response to second user data;first summer for generating an in-phase term in response to said first in-phase data and a n inverted instance of said second quadrature-phase user data;second summer for generating a quadrature-phase term in response to said first quadrature-phase data and said second in-phase data;in-phase carrier sinusoid modulator for generating an in-phase signal in response to said first term;quadrature-phase carrier sinusoid modulator for generating a quadrature-phase signal in response to said second term; andsummer for summing said in-phase signal and said quadrature-phase signal.