Checksum-Based Probabilistic Transient-Error Compensation for Linear Digital Systems
Checksum-Based Probabilistic Transient-Error Compensation for Linear Digital Systems
复制标题
线性数字系统基于校验和的概率瞬态误差补偿
DOI：
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复制
发表时间：
2009
影响因子：
2.8
通讯作者：
A. Chatterjee
中科院分区：
文献类型：
--
作者：
M. Ashouei;A. Chatterjee
本文提出了一种使瞬态误差影响最小化的概率补偿技术。重点是开发一种补偿技术的DSP应用程序中，精确的误差补偿是没有必要的，端到端的系统级性能降低到最低限度，只要注入到系统中的ldquonoiserdquo的影响的瞬态误差最小化。所提出的技术，称为基于校验和的概率补偿，使用实数校验和码的错误检测和部分补偿。传统的编码技术需要距离为3的码和相对复杂的计算来进行完美的纠错。在这里，它示出的距离-两个代码可以用来执行概率误差补偿在线性系统中的随机瞬态误差的存在下，以提高信噪比的目标。目标是具有小功率和面积开销的技术，并且以可忽略的延迟在真实的时间中执行补偿。所提出的技术是全面的，可以处理组合电路和存储元件中的错误。与无纠错系统的比较表明，SNR可能提高13 dB。面积，功率和所提出的技术的时间开销进行了分析。
In this paper, a probabilistic compensation technique for minimizing the effect of transient errors effect is proposed. The focus is to develop a compensation technique for DSP applications in which exact error compensation is not necessary and end-to-end system level performance is degraded minimally as long as the impact of the ldquonoiserdquo injected into the system by the transient errors is minimized. The proposed technique, called checksum-based probabilistic compensation, uses real-number checksum codes for error detection and partial compensation. Traditional coding techniques need a code of distance three and relatively complex calculations for perfect error correction. Here, it is shown that a distance-two code can be used to perform probabilistic error compensation in linear systems with the objective of improving the signal-to-noise ratio in the presence of random transient errors. The goal is to have a technique with small power and area overhead and to perform compensation in real time with negligible latency. The proposed technique is comprehensive and can handle errors in the combinational circuitry and storage elements. Comparison against a system with no error correction shows that up to 13-dB SNR improvement is possible. The area, power, and timing overheads of the proposed technique are analyzed.