COMMUNICATIONS SYSTEM IMPROVEMENT FOR EXPANDED INFORMATION CAPACITY FOR EXISTING COMMUNICATION TRANSMISSION SYSTEMS USING SPREAD SPECTRUM TECHNIQUES

摘要

Systems and processes for including spread spectrum transmissions within television and radio broadcast channels without substantial degradation of the broadcast programming. The spread spectrum transmissions may carry components of the same television or radio programming, they may be the same programming, or they may be content that is unrelated to the programming. Disclosed are systems and processes for accomplishing such spread spectrum transmissions in a manner that compensates for robustness of signal components, by among other things time varying and/or varying frequency of the spread spectrum transmissions. Also disclosed are systems and processes for abating carrier signals to compensate for the effects of the spread spectrum transmissions in the channel. Further disclosed are systems and processes for conducting such transmissions in a cellular communications system.