论文标题
优化且并行化处理顺序，以提高频率选择性信号外推
Optimized and Parallelized Processing Order for Improved Frequency Selective Signal Extrapolation
论文作者
论文摘要
近年来，多核处理器设计已进入许多计算设备。为了以最佳方式利用此类设备的功能，必须在并行任务中适应信号处理算法。在此贡献中，提出了优化的处理顺序，用于频率选择性外推，这是一种强大的信号外推算法。使用此优化顺序，可以并行进行外推。该算法的尺度非常好，对于八核计算机而言，加速度高达7.7。此外，优化的处理顺序旨在减少连续损失的外推错误的传播。因此，除了加速度外，还可以实现高达0.5 dB PSNR的视觉上明显改善。
In the recent years, multi-core processor designs have found their way into many computing devices. To exploit the capabilities of such devices in the best possible way, signal processing algorithms have to be adapted to an operation in parallel tasks. In this contribution an optimized processing order is proposed for Frequency Selective Extrapolation, a powerful signal extrapolation algorithm. Using this optimized order, the extrapolation can be carried out in parallel. The algorithm scales very good, resulting in an acceleration of a factor of up to 7.7 for an eight core computer. Additionally, the optimized processing order aims at reducing the propagation of extrapolation errors over consecutive losses. Thus, in addition to the acceleration, a visually noticeable improvement in quality of up to 0.5 dB PSNR can be achieved.
