Why frequency hopping in gsm

Metzner, G. Spring, H. Winkler and P. Jung, Frequency hopping-spectral capacity en-hancement of cellular networks, in: Proc. IEEE 4th Internat. Nielsen, J. Wigard and P. Download references. You can also search for this author in PubMed Google Scholar. Reprints and Permissions.

Bourjolly, JM. Telecommunication Systems 21, — Download citation. Performance improvement in GSM networks due to slow frequency hopping Abstract: This paper investigates the performance of GSM systems employing slow frequency hopping when a limited number of hopping channels are used. Frequency hopping increases spectral efficiency by enabling frequencies to be reused more intensely. Previous analysis of frequency hopping systems have considered systems that have a large number of hopping channels available.

However, due to spectrum and frequency planning constraints, there are often only a limited number of channels available for hopping in most cellular systems and consequently maximum improvement cannot be achieved. In GSM, one carrier frequency is divided into eight time slots. Each time slot provides one physical channel, which can be assigned to one link between a mobile and a base station.

The communication between the mobile and the base station occurs in bursts inside the assigned time slot. Each burst lasts about ms.