Parallel turbo coding interleavers: avoiding collisions in accesses to storage elements

High-speed, low latency convolutional turbo codes require a parallel decoder architecture. To maximise the gain in speed, the interleaver also should have a parallel structure. Here, a class of optimum parallel interleavers regarding the access to storage elements is presented. They combine regularity (easy implementation) with no latency in data transfer between the decoder module and intrinsic/extrinsic values memories, and show excellent BER performance.