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Some chaotic sequences have poor autocorrelation performance or modulated autocorrelation performance, but previously we didn't know the rule and couldn't improve their performances effectively. Using recently presented Autocorrelation and modulated Autocorrelation theorems based on a Phase Space method, we can find and mend the structure defects of chaotic sequences and improve their autocorrelation...
Hyperchaos sequences have been widely used as a kind of complex pseudorandom sequences. But some well known Hyperchaos sequences, such as CML sequence, have poor autocorrelation performance, and their applications are limited. Based on recently presented APAS theorem, we modified CML map to S-CML map, and S-CML sequence has excellent autocorrelation performance, whereas its other performances are...
Chaotic sequences have been widely used as pseudorandom sequences. Although some well known chaotic sequences have good autocorrelation performance, but after modulation, autocorrelation performance become poor, such as Tent sequence, so their applications are limited. Based on recently presented APAS theorem, we modified Tent map to DS-Tent map, and DS-Tent sequence has excellent RFM autocorrelation...
Chaotic sequences, as a kind of pseudorandom sequences, have been widely used. But some well known chaotic sequences, such as Henon sequence, have poor autocorrelation performance, and their applications are limited. Based on recently presented APAS theorem, we modified Henon map to S-Henon map, and S-Henon sequence has excellent autocorrelation performance and simple structure, whereas its other...
Chaotic sequences have been widely used as pseudorandom sequences. But some well known chaotic sequence has poor autocorrelation, or after modulation, autocorrelation performance become poor, and their applications are limited. Such as TD-ERCS sequence, not only has poor autocorrelation performance, but also its RFM signal has poor autocorrelation, too. Based on recently presented APAS theorem, we...
Chaotic sequences, as a kind of pseudorandom sequences, have been widely used. But some well known chaotic sequences, such as Skew Tent sequence, have poor autocorrelation performance, and their applications are limited. Based on recently presented APAS theorem, we modified Skew Tent map to S-Skew Tent map, and S-Skew Tent sequence has excellent autocorrelation performance and simple structure, whereas...
Under the background of TDD mode and LTE-Advanced scene, in this paper, we combine physical network coding with relay technology in order to make physical network coding-decode and forward (PNC-DF) together with physical network coding-amplify and forward (PNC-AF) transfer mode can be used to improve network throughput by using interference. Because of the ability to listen to the multi-user relay...
In next generation network, various heterogeneous wireless access networks are expected to integrate to support user's seamless connection. In this system, efficient and reliable network selection schemes are required for users to choose a suitable network among all the available networks. In this paper, an adaptive network selection algorithm based on user profile and application profile is proposed...
Voltage-dependent timing skews in precharge and sensing activities cause functional failure and reduce the speed of asynchronous SRAM. Data-dependent bitline leakage current further increases the timing skews and reduces the yield of asynchronous SRAM. A dual-mode self-timed (DMST) technique is developed for asynchronous SRAM to eliminate the timing-skew-induced failures and speed overhead across...
In this paper, we present MobTorrent, an on- demand, user-driven framework designed for vehicles which have intermittent high speed access to roadside WiFi access points (AP). Mobile nodes in MobTorrent use the WWAN network as a control channel. When a mobile client wants to initiate a download, instead of waiting for contact with the AP, it informs one (or multiple) selected AP(s) to prefetch the...
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