VLSI Architecture for High Performance 3GPP Interleaver/Deinterleaver for Turbo Codes

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Interleaving along with error correction coding is an effective way to deal with different types of error in digital data communication. Error burst due to multipath fading and from other sources in a digital channel may be effectively combated by interleaving. Normally the interleaver / deinterleaver pair is often designed as reconfigurable architectures able to deal with requirements of large data length variability found in the newest communication standards. In this work reconfigurable interleaver architecture for the turbo decoder in 3rd Generation Partnership Project (3GPP) standard is presented. The interleaver is a key component of radio communication systems. Using conventional design methods, it consumes a large part of silicon area in the design of turbo encoder and decoder. The proposed interleaver utilizes the algorithmic level hardware simplifications and generates 100 manage the ow of data streams to achieve very low cost solution. The proposed technique reduces consumption of FPGA resources to a large extent compared with existing state-ofthe-art interleaver for turbo codes. The proposed architecture con- sumes only 4856 logic elements by hardware optimization.