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This paper presents an efficient conflict-free memory address scheme for arbitrary 2k-point memory-based FFT processors. The address scheme can support in-place strategy, continuous-flow mode, and variable size for arbitrary long sized FFT. More over, the address scheme can adjust the throughput by changing the computation radix and the parallelism of the arithmetic processing units according to the...
This paper presents an efficient memory-based fast Fourier transform processor including 35 different working sizes for LTE systems. A factorization method named high-radix-small-butterfly combined with a conflict-free address scheme for 2p3q5r point memory-based FFT processor is proposed. The processor can not only provide conflict-free concurrent data access from different memory banks but also...
In this paper, we describe a flexible variant of exponential integration methods for large systems of differential equations. This version possesses the flexibility and generality which allows to further exploit the special structure of the system. By using modified B-series and bi-coloured rooted trees, we can derive the general structure of the classical order conditions for these schemes. Some...
Due to the growing demand of transmission capacity of the wireless communication system, multiple-input multiple-output orthogonal frequency division multiplexing requires more and more antennas and a large number of sub-carriers. Thus, the QR decomposition becomes one of the computational bottlenecks in the QR-based MIMO detection because of calculating latency of many sub-carriers and compatible...
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