Xinsheng Zhao

Learn More
This paper presents an adaptive frame length mechanism based on a cross-layer analysis of intrinsic relations between the MAC frame length, bit error rate (BER) of the wireless link and normalized goodput. The proposed mechanism selects the optimal frame length that keeps the service normalized goodput at required levels while satisfying the lowest(More)
Capacity dimensioning is one of the key problems in wireless network planning. Analytical and simulation methods are usually used to pursue the accurate capacity dimensioning of wireless network. In this paper, an analytical capacity dimensioning method for WCDMA with high speed wireless link is proposed based on the analysis on relations among system(More)
The middle and lower reaches of the Yangtze River basin have the most representative and largest concentration of freshwater lakes in China. However, the size and number of these lakes have changed considerably over the past century due to the natural and anthropogenic impact. The lakes, larger than 10 km(2) in size, were chosen from relief maps and(More)
In LTE-A systems, load balancing is one of the key targets of the self-organizing network (SON). This paper proposes a virtual cell-breathing based load balancing (VCBLB) scheme for downlink LTE-A self-optimizing networks. In the proposed load balancing scheme, the coverage of serving cells and neighboring target cells is virtually controlled by adjusting(More)
Stilbazolium dimers were designed and synthesized in which methylene groups of different lengths link the two chromophores. The second-order nonlinear optical property has been detected from their Langmuir-Blodgett monolayers. Photocurrent generation as well as other photophysical properties such as absorption and fluorescence were investigated. Comparing(More)
G protein-coupled receptors (GPCRs) activate mitogen-activated protein kinases through a number of distinct pathways in cells. Increasing evidence has suggested that endosomal signaling has an important role in receptor signal transduction. Here we investigated the involvement of endocytosis in α(1A)-adrenergic receptor (α(1A)-AR)-induced activation of(More)
Cell range expansion (CRE) by pico eNodeB in heterogeneous networks can reduce the uplink interference effectively at the cost of the downlink interference increasing. It will lead to the system capacity decreasing apparently with a large range expansion bias. In this paper, we propose an asymmetric cell selection scheme for inter-cell interference(More)