PCS based on the GSM system, also called PCS1900, provides an advanced wireless system concept with a high performance air interface. The combination of techniques such as frequency hopping, equalization, channel coding and spatial diversity help in controlling the hostile radio environment. In this paper, the performance mainly in terms of coverage and capacity is evaluated and compared with PCS based onThe results show a coverage advantage for GSM-based PCS (PCS1900) corresponding to fewer required base stations than for IS-95 CDMA. The reason is the large frequency diversity possible to achieve with PCS1900.The capacity in terms of channelskector is comparable for the two systems. When using the same speech coder rate, PCS1900 will have a small capacity advantage. The important concept of Hierarchical Cell Structures to get really high system capacity per km2 in a flexible way, is only supported by PCS1900.IS-95 CDMA.
We see today a world where people are requesting more and more information and sharing more and more data. Eventually, this will lead to a future where everyone and everything that can benefit from being connected will be connected, allowing for anytime/everywhere access to information and sharing of data.This networked society will not only encompass human beings. Rather, a substantial part of future information/data traffic will be due to machines that communicate. Such ma chine communication will emerge and flourish in many areas of society, including, e.g., safety and security applications, in the energy systems, and within the transport sector. This also means that machine-type communication can and should not be seen as a single new type of traffic. Rather machine-type communication will encompass a wide range of characteristics and requirements, all of which have to be taken into account when building up the networks of the future.The networked society will consist of three key components •
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