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Study On System Of Mobile Communication's Power Control

Posted on:2007-06-09Degree:MasterType:Thesis
Country:ChinaCandidate:Y WangFull Text:PDF
GTID:2178360182983175Subject:Circuits and Systems
Abstract/Summary:PDF Full Text Request
Transmission power control is one of the key techniques in CDMA systems, No better it can solve the "near-far problem", but also reduce the Multiple -Access Interface (MAI) thus improve the system capacity greatly, how to adjust transmission power control dynamic in order to take full use of wireless resource and improve communications quality is always a very attractive field of research. Based on the analysis of the character of the little area system capability in WCDMA system, some improving processing methods are put forward so that the effect of simulated hits data latter.There is an in-depth study of power control in WCDMA system in this paper. It puts power control as one of key techniques based on the detailed analysis of the character in WCDMA system. After the study of the domestic and international latest investigation technology, the power control arithmetic is deeply researched by theoretical analysis and simulation. The application method as well as a practical example are also given in this paper. All these study and research is benefit for improving the sampling precision of power control.As well as development of communication system, communication resource went short of. Power control is applied more and more as a useful arithmetic. Because of its apply effectiveness and realization, the forward link partial-balance power control algorithm has become one of the most popular method among those power control algorithms. Based on the formation of beehive system of model, some modeling threshold function is given after the combination of mathematic method and power control method. What's more, a new measure is put forward because it can promote the division in excessive areas, this method is a preprocessing method because it is aimed at the system capability. Some theoretical analysis and simulation is given in order to test the validity of these methods. At last, all these methods is used in the processing ofAt the end, based on the model of non-uniform distributions of users in singleness area and excessive areas environment, this paper acquires the optimal received power of each traffic by iteration under ideal power control, then the results is interfered in order to test their effect by the condition of heavy loaded traffic and light loaded traffic in system. At last, all results are compared and analyzed.
Keywords/Search Tags:3G, WCDMA, Power Control, System Capacity, SIR, QoS
PDF Full Text Request
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