Pipeline requires both low latency and high throughput. Synchronous pipeline achieves a near optimized throughput but suffers from the worst-case computation delay. Meanwhile, asynchronous pipeline keeps an optimized computation delay but suffers from the low throughput. In this paper, we present dual control path (DCP), a new structure of four-phase handshake asynchronous control path, to improve the throughput of asynchronous pipeline. We leverage the existing fully decoupled four-phase handshake elements and asymmetric delay elements to found DCP. Experimental results show the asynchronous pipeline with DCP could achieve high throughput as well as low computation delay, only with tiny area overhead.
This paper considers the problem of estimating the parameters of a frequency-hopping signal under non-cooperative conditions. To make the estimation of different parameters independently of each other, a compressed domain frequency-hopping signal parameter estimation algorithm based on the improved atomic dictionary is proposed. By segmenting and compressive sampling the received signal, the center frequency of each signal segment is estimated using the maximum dot product. The signal segments are processed with central frequency variation using the improved atomic dictionary to accurately estimate the hopping time. We highlight that one superiority of the proposed algorithm is that high-resolution center frequency estimation can be directly obtained without reconstructing the frequency-hopping signal. Additionally, another superiority of the proposed algorithm is that hopping time estimation has nothing to do with center frequency estimation. Numerical results show that the proposed algorithm can achieve superior performance compared with the competing method.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.