High performance multi-carrier technologies with expanded applicability to CDMA systems (DS-CDMA and MC-CDMA)

Abstract

Code division multiple access (CDMA) has been an important component in wireless communication systems since the early 1980’s. Now the frontrunner in the 3G cellular standard, CDMA techniques have come a long way since their inception. However, these systems are not without their limitations -- both in terms of performance and network capacity.In this work, we significantly enhance the performance of existing CDMA systems via the introduction of novel multi-carrier architectures. Specifically, we demonstrate a doubling in the network capacity of existing DS-CDMA and MC-CDMA systems without loss in performance, or we provide significant performance gains over existing networks at their current system load. The novel CDMA techniques introduced in this thesis will help significantly enhance the impact of CDMA in the years to come.