Generic devices, systems and methods for multiple radio access technologies (RATs) are described. An arrangement can include, for example, a multiple radio access technology (RAT) platform configured to enable communications with a plurality of different RATs using procedures associated with transceiver processing functions, wherein the procedures implement the transceiver processing functions through functional units (FUs) which perform operations, the FUs being implemented in at least one of hardware and software; and wherein the FUs are configured by functional unit descriptors (FUDs) which instruct an FU regarding at least one of: (a) from which memory location to fetch data to operate upon or parameters associated with an operation to be performed by the FU, (b) to which memory location to store data as a result of an operation and (c) a message type to output after the operation.