A cellular network

A cellular network A cellular network is a radio network made of number of radio cells, each severed by fixed positioned based station. These cells stations cover several different areas and provide large radio coverage. In order for this to happen a variable number of portable transceivers can be used in any cell and moved through one cell during transmission. The use of multiple cells means that if the distributed transceivers are mobile and moving from one point to another point they should change also from cell to cell. This mechanism could be different according to the type of network and change of circumstances. In this case clear coordination between base station and mobile station is must in order to avoid communication interruption. The most common example of cellular Network is a cell or mobile phone, which is a portable telephone that could be dialled or receives calls through base station or transmitting tower. Radio waves transfer signal to and from mobile phone. The coverage area of serv ice provider sometime is split into small cells in order to prevent signal losses and also a large number of active phones in the area. The range of signals could be different in cities and rural areas. All base stations are connected to mobile phone switches centre, which connect to a public telephone network or to another mobile company switch. As the mobile consumer moves from one cell area to another cell, the switch automatically commands the handset and a cell site with a stronger signal (reported by each handset) to switch to a new radio channel (frequency). When the handset responds through the new cell site, the exchange switches the connection to the new cell site. Modern cell phones networks use cell as radio frequencies are limited, shared resource, base stations and handsets change frequency and use low power transmitters in order that limited number of radio frequency can be used at the same time by many users with less interferences. To distinguish signals from a vari eties of different transmitters, frequency division multiple access (FDMA) and code division multiple access (CDMA) has been developed. Advantage of cellular Network over other alternative solutions is: Increase capacity. Power usage reduced. Huge coverage area. Interference from other signals reduced. Reference paper 10 The evolution of the cellular Network started to flourish during the last years in which several different systems were developed; as a result we have first generation (1G), second generation (2G), third generation (3G) cellular networks and the trend is continuously increasing. The first generation (1G) was used from 1970-1980 and now is retired. In 1990 the second generation (2G) of Networks were launched such as Global System for Mobile communications (GSM), Personal Communications Service (PCS), and Integrated Digital Enhanced Network (IDEN) and so on. The second generation (2G) of networks replaced the (1G) and became very popular with digital processing, enabl ing wireless transmission of voice as well as data and have different Variety of new features such as a Push to Talk, Short Messaging service(SMS), caller ID, conference calling, voice mail, email messaging and so on.

Rational thinking in Business Essay Example | Topics and Well Written Essays - 500 words

Rational thinking in Business - Essay Example No business can exist long in the market using irrational methods or thoughts. This paper explains the importance of rational thinking in business. â€Å"A thought, belief or attitude is rational to the extent that it satisfies five criteria: It is consistent with the facts or the objective reality; It helps preserve ones life and health; It helps one achieve ones short and long-term goals; It helps one avoid unwanted conflict; It helps one feel the way one wants to feel† (Alexander) In business objectives are important. Every action in a business setup is done for obtaining certain business objectives. These objectives are achievable only if the actions were supported with facts and logics. For example it is not possible for a construction business group to invest heavily at present because of the economic recession going on. The fact that people are reluctant nowadays in spending more on real estate sector is the rational or fact behind such thoughts. On the other hand the same business group can think about heavy investment once they see evidences of improvement in economic situations for achieving their long term goa ls. â€Å"Healthy rational thinking requires; an adequate attention span, patience and the ability to focus, to observe, interpret, perceive and consequently develop logic† (Yahya). In business, the ability to observe and focus is important in perceiving and interpreting the problems correctly. The correct interpretation of the problem is important in finding out correct solutions. For example, a business executive who wrongly interpret the market, based on rumours and opinions of others may fail to take sound and healthy decisions in favour of the organization. Rational thinking is the most common problem solving methods in business. For example in a business organization, the manager has to judge the performances of the workers based on their capacities or abilities. A rationally thinking manager will take actions against an

Assignment Example | Topics and Well Written Essays - 250 words - 397

Assignment Example the grounds that she lacked interpersonal skills, or it was just an excuse for sexual discrimination violating Title VII of Civil Rights Act. Rule of Law: Title VII of Civil Rights Act provides that people should not be discriminated against in the workplace based on sex stereotypes. The courts do not require direct evidence to prove discrimination under Title VII. Analysis: The Supreme Court established that Price Waterhouse had unlawfully discriminated against Ann. The Court reasoned that Waterhouse had to provide evidence by a predominance of the proof that their decision to reject Hopkins a promotion was not based on her lack of femininity and sex. Therefore, Title VII provides that it is prudent for the organization to establish that their acts were in no way discriminatory. Conclusion: Discrimination based on sex stereotyping was actionable offence in the Title VII of the Civil Rights Act. The ruling in the case determined that a mixed-motive outline as a way of providing proof for discriminating allegations using disparate treatment theory still where the employers acts exist for other legitimate