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.
In this paper, the coexistence issue between macro/micro WCDMA system and macro WiMax system has been investigated. Monte Carlo simulation method is used to evaluate the impact of inter-system interference produced by coexistence of systems in the same geographical area in adjacent frequency. Based on the analysis of the interference, we come to the conclusion whether WCDMA and WiMax systems could...
A new fractal image compression algorithm based on high frequency energy (HFE) partitioning and matched domain block searching is proposed for SAR imagery coding. The proposed coder uses a new criterion to partition image and a novel method to search the matched domain block for each range block to code the low frequency component of the transformed SAR image by wavelet. Peak signal-to-noise ratio...
The next generation space internet (NGSI) is based on all-IP-based mobile network that merges land-based network, sea-based network, sky-based network, space-based network, deep space-based network together using existing assess network technologies. There are high signal propagation delays, high error rate, bandwidth variation and time-variety in NGSI. In order to adapt to various space communication...
According to specifications related to WIMAX (IEEE802.16d TDD) and WCDMA, interference scenarios are analyzed by computer simulation between macro WCDMA and macro WIMAX in the same geographic area. Frequency interference analysis method is introduced in this paper. At last, simulation results of WCDMA system capacity loss and WIMAX system performance degradation impacted by inter- system interference...
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.