Design paradigm for standard agnostic channelization in flexible mobile radios

Abstract

Computationally intensive functions in the radio baseband have been typically implemented using dedicated hardware accelerators. The requirement of flexibility and multimode support in emerging communication paradigms has introduced new design challenges for implementing these accelerator cores, which were typically optimized for a single mode of operation. This paper focuses on the design of multimode accelerators for the channelization function in a flexible radio. This work introduces a theoretical framework, to systematically identify commonalities and redundancies in the channelization specification across multiple modes. A novel sample rate conversion ratio factorization strategy is also introduced, that allows a significant portion of the channelization accelerator to be hardwired and reused across multiple modes of operation.