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Quadratic permutation polynomial (QPP) interleaver is a contention-free interleaver which is suitable for parallel turbo decoder implementation. In this paper, a systematic recursive method to design configurable QPP interleaving multistage network is proposed based on the property of QPP. Due to the nature of recursion, the proposed network for 2n-level parallel turbo decoder can be used for any...
Fast Fourier Transform (FFT) cores are extensively used in digital signal processing (DSP) applications like communication systems. Many pipelined FFT architectures optimized for different objectives have been proposed in past few decades. Though a fixed pipelined FFT architecture can generally provide good throughput at reasonable hardware cost, it may still fail to meet the performance demand for...
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