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 real life the radio signals are subject to Rayleigh fading (fast fading) and interference. Power control is needed to compensate for these effects. This paper proposes a predictive inverse fast power control algorithm (PI-PCA) in DS-CDMA systems. Replacing the conventional power control schemes, this power control scheme controls the mobile's transmitted power based on the prediction of the fading...
In this paper, we proposed an optical code division multiple access (OCDMA) system with the position code to re-utilize the time slots wasted. We find that the performance of the new system will be better than that of original system. For example, it can accommodate at least 50 more users in the worst performance when BER is 10-9, and suppress the narrowband interference (NBI) caused by wavelength...
This paper aims to contribute to offshore risk analysis by proposing a methodology to model causal relationships focusing on human and organisational errors. The proposed methodology uses James Reason's "Swiss cheese" model to form a generic offshore risk analysis framework and tailors Bayesian Network (BN) to fit into the framework to construct a causal relationship model. A case study...
For monolithic RF spiral inductor on high-loss silicon substrate, a novel physical model is proposed, in which functions of skin effect, proximity effect and eddy current losses in the substrate to frequency-dependent series parameters Ls and Rs are accounted in the light of modified partial equivalent element circuit methodology and a full- coupled transformer loop and, in the meanwhile, distributed...
For optical communication networks, the wavelength division multiple access (WDMA) system has been developed at first and maturely commercialized. Although WDMA can be used to satisfy the requirement mentioned above, it has the disadvantage of low efficiency in utilizing bandwidth (for the high bandwidth optical communication system). Thus, the optical code division multiple access (OCDMA) is developed...
A hybrid OCDMA/WDMA system is further investigated. We propose an OCDMA receiver design to receive the desired signal with the least interference. Lower probability of error is obtained and better performance can be achieved
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.