Design of TETRA 2 turbo decoder with minimum memory hardware interleaver

Terrestrial Trunked Radio (TETRA) is a digital trunked mobile radio standard developed by the European Telecommunications Standards Institute (ETSI). Especially, TETRA 2 supports different channel bandwidths and modulation techniques, and turbo code has been adopted as a channel code with powerful error correcting capability. In this paper, to lower the implementation cost of Takeshita-Costello interleaver adopted in TETRA 2, we present the simple interleaved address generation scheme which requires minimum memory size compared to the conventional memory-based interleaver. Also, overall TETRA 2 turbo decoder architecture including the proposed interleaver is described with its implementation results