온칩 컨볼루션 가속기를 포함한 대칭적 버퍼 기반 액티브 노이즈 캔슬러의 경량화된 FPGA 구현. (Korean)

Lightweight FPGA Implementation of Symmetric Buffer-based Active Noise Canceller with On-Chip Convolution Acceleration Units. (English)

As the noise canceler with a small processing delay increases the sampling frequency, a better-quality output can be obtained. For a single buffer, processing delay occurs because it is impossible to write new data while the processor is processing the data. When synthesizing with anti-noise and output signal, this processing delay creates additional buffering overhead to match the phase. In this paper, we propose an accelerator structure that minimizes processing delay and increases processing speed by alternately performing read and write operations using the Symmetric Even-Odd-buffer. In addition, we compare the structural differences between the two methods of noise cancellation (Fast Fourier Transform noise cancellation and adaptive Least Mean Square algorithm). As a result, using an Symmetric Even-Odd-buffer the processing delay was reduced by 29.2% compared to a single buffer. The proposed Symmetric Even-Odd-buffer structure has the advantage that it can be applied to various canceling algorithms. [ABSTRACT FROM AUTHOR]

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