The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Based on considering the CODEC frame duration, this paper proposes a superior uplink scheduling algorithm that can efficiently support multiple DTX VoIP CODECs over M-WiMAX, and be able to facilitate the uplink resource wastes during silence period and optimize the system VoIP capacity. The BS uplink resource allocation procedure is planned and adapted according to the reserved bit in the Bandwidth...
Based on the principle of complex systems and software network design and implement a software network measurement platform, which based on the static structure of network. The software network measurement platform can calculate and analyze static macro topology characteristic value and metrics, finally through with commercial software Pajek contrast test and verify the correctness of the platform...
The practice-based design education is a common feature in design education. The art design teaching include two parts: theory education and practice education. How to construct the system of practice teaching is an core issue. This paper outlined a study of practice types in use about design, then it analyzed and summarized some principles about practice-based design roundly. At last, the effect...
Technology advantages of body sensor networks (BSN) have shown great deal of promises in medical applications. In this paper we introduced a wearable device for biofeedback application based on the BSN platform we had developed. The biofeedback device we have developed includes the heart rate monitoring belt with conductive fabric and the biofeedback device with respiration belt. A wearable respiratory...
Technology advantages of body sensor networks (BSN) have shown great deal of promises in medical applications. In this paper we introduced a wearable device for biofeedback application based on the BSN platform we had developed. The biofeedback device we have developed includes the heart rate monitoring belt with conductive fabric and the biofeedback device with respiration belt. A wearable respiratory...
Performance of analog integrated circuits is highly sensitive to layout parasitics. This paper presents an improved template-based algorithm that automatically conducts performance-constrained parasitic-aware retargeting and optimization of analog layouts. In order to achieve desired circuit performance, performance sensitivities with respect to layout parasitics are first determined. Then the algorithm...
This paper proposes an efficient uplink scheduling algorithm that can perfectly support various VoIP CODECs with VAD/DTX/CNG in M-WiMAX considering the variants of silence duration between different voice users, solving the problems of uplink resources wastes and overwhelmingly large overhead that caused during silence period. In our proposed algorithm, efficient schemes is proposed to implement the...
In this paper, an innovative scheduling scheme is proposed for interference-limited wireless multi-hop networks with non-deterministic fading channels. The scheduling problem is considered as a network utility maximization(NUM) problem subject to link rate constraints. With jointly considering link scheduling and the statistical variations of both signal and interference power, the convex sets for...
This paper proposes a flexible uplink scheduling algorithm that can perfectly support Variable Multi-Rate Wide-Band (VMR-WB) VoIP services with multi-mode codec, solving the problems of uplink resources wastes, additional access delay and overwhelmingly large overhead. In our proposed algorithm, the BS adapts uplink resources assignment according to the reserved bit in the generic MAC header of IEEE802...
Image matching is an important topic in the field of image processing, and it is widely used in image registration and image fusion. An image fast template matching algorithm based on projection and sequential similarity detecting is proposed. The algorithm employs the strategy of image template matching that is from sketch matching to detail matching. Firstly the real-time images are projected to...
We compared the performance of SI-GaAs stripline antennas with different gaps, the widths of electrodes and electrode material by experiment. Large gap antenna have high electrical to terahertz (THz) and optical to THz conversion efficiency. The dynamic range of antenna with 150 mum gap, 100 mum Au/Ge/Ni electrodes and heat sink is 6300 without purging.
A new analysis method of reliability test data about low-voltage electrical appliance is proposed based on grey theory, which can be applied to solve small sample size problem. The conception, that is called ??gray stability??, is first proposed and defined notion and derivation of mathematical expression. It has important engineering significance in the field of reliability. The test data about electrical...
Traditional educational systems are usually presented in a course based and static way, without taking into account the learner's interests and learning progress. Language learning by that means could be accompanied by boredom and lack of real experiences, which is a great barrier to improving language skills. This paper presents an English learning system that is based on Web browsing. Users browse...
The multi-cycle inventory problems have been studied under two main assumptions. Continuous review assumption where an order can made at any time depending on inventory position and periodic review assumption where an order can be initiated only at discrete time epochs. In this study, we analyze a multi period inventory problem that falls under neither of these two assumptions. In this case we consider...
This paper presents an expert body sensor network (BSN) algorithm for autonomous control of mean arterial blood pressure using vasoactive drugs. A robust Proportional Integral Differential (PID) control algorithm based on a statistics model was designated. Extensive simulation results indicated that the light-weighted expert BSN system is robust enough against sensitivity variations and various artificial...
Performance of analog circuits is highly sensitive to layout parasitics. This paper presents an improved algorithm that automatically conducts performance-constrained parasitic-aware retargeting and optimization of analog layouts. In order to meet the desired circuit specification, performance sensitivities with respect to layout parasitics are first determined. Then the algorithm applies sensitivity-based...
Wireless sensor network (WSN) is considered as one of the most important techniques in the 21st century. However, wireless sensor network operating system (WSNOS) is the core and also the essential part of the WSN system, and its high efficiency and flexibility directly impact on the performance of the real-time system. Our Liaoning Provincial Key Embedded Technology Institute has achieved great results...
In order to reduce the influence of the jitter of hard real-time task caused by scheduling to the stability and reliability of device-level operation system, a model with preemption segment threshold-RJPS is presented. According to the effect on jitter and latency brought by threshold and the analysis of the scheduling on this model, two minimum threshold assigned algorithms are designed. One of them...
The performance requirements of next-generation CMOS image sensors (CIS) have been increasing in terms of frame rate, read noise, dynamic range, as well as pixel resolution. In order to satisfy strict specifications, a column-parallel ADC is a key element in a state-of-the-art CIS. However, this architecture leads to side-effects such as vertical fixed pattern noise (VFPN) and read noise. In order...
Multiple-Input Multiple-Output (MIMO) technology can improve the performance of radar by spatial diversity. Two methods for designing MIMO radar waveform are introduced in this paper. The first one is to design waveforms that maximize the conditional mutual information (MI) between the reflected waveform and the channel impulse response. The second one is to minimize the minimum mean-square error...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.