1. Differentiate between analog and digital cellular system.
Answers
Answer:
Analog cellular system -
Analog cellular services in the United States were developed in the 1970s by AT&T and were widely deployed by the late 1980s. They were implemented in a standard format so that all telephones worked on all analog cellular networks in the United States. However, analog cellular services became so popular that capacity was not adequate for future growth, particularly in metropolitan areas.
As a result, digital cellular was developed to add capacity and advanced features. Digital cellular offers features such as caller ID, call forwarding, and three-way calling. In addition, many of the handsets have paging, long battery lives, and short messaging services integrated via a liquid crystal display. The advent of digital cellular and Personal Communications Service (PCS) led to price decreases and affordable cellular for residential consumers. In 1998, for the first time, the sale of digital handsets exceeded that of analog handsets.
Digital cellular system -
Digital cellular services are being implemented differently in the United States than in Europe. In 1987, the European Union chose a standard called Global System for Mobile Communications (GSM) for delivering new digital wireless telephony. In the United States, the Telecommunications Industry Association (TIA) settled on a similar standard using time-division multiple access. However, shortly thereafter, many of the Bell telephone companies decided to use a newer method of multiplexing, code-division multiple access (CDMA). CDMA has greater capacity than time-division multiple access. The previous table provides a comparison of the various wireless services available.
Answer:
Difference between analogue and digital cellular system
Explanation:
Analog was used with first generation cellular technology and digital cellular was the second generation and beyond.
cellular or mobile , phone system use in part , wireless radio transmissions to carry conversations and other information.
an Analog system uses somethong like FM radio technology .