منابع مشابه
VLSI in Mobile Communications
In recent years, the demand for mobile operation of all types of electronic systems has become significant. It seems that by merely providing the same functionality of a desktop system in a mobile unit, a significant market advantage can be obtained for virtually any electronic function. Consumer electronics companies have been highly successful by creating portable televisions, video tape reco...
متن کاملWireless and Mobile Communications
Figure 1 gives a rough overview of some prominent wireless communication systems focusing on the two parameters gross data rate and relative speed between sender and receiver. Assuming a mobile end-user connected to a stationary transceiver station, the points on the (non proportional) speed axis resemble nonmoving persons, pedestrians, cars downtown, cars outside cities, and cars on a highway,...
متن کاملGeneration of Mobile Communications
Despite the fact that 4G deployment is still at its infancy there are already many research initiatives that focus on the next generation of mobile communications. But why there is a need for a new generation to be shaped so closely to the previous one? Is it really a need behind it by the community or the companies are seeking new ways to sustain or enhance their profits. In this paper we high...
متن کاملMobile communications going massive
Mobile communications have undergone an amazing development over the last few decades, with new generations coming out roughly every ten years. Each transition from one generation to the next has brought new capabilities and improved technology. The first generation was based on analogue technology and supported only traditional phone calls, while subsequent generations have become increasingly...
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ژورنال
عنوان ژورنال: The Journal of the Institute of Television Engineers of Japan
سال: 1991
ISSN: 0386-6831,1884-9652
DOI: 10.3169/itej1978.45.1544