Change search
ReferencesLink to record
Permanent link

Direct link
On local/regional single frequency networks
KTH, Superseded Departments, Signals, Sensors and Systems.
1995 (English)Conference paper (Refereed)
Abstract [en]

OFDM is a new modulation scheme which can handle severe multipath propagation environments. The OFDM receiver allows all transmitters in a radio broadcasting network to transmit the same radio program in the same frequency block simultaneously, i.e. simulcasting. Such a Single Frequency Network (SFN) provides good coverage and frequency economy in national applications. However, the efficiency in local SFNs has been questioned. The coverage properties of a single frequency broadcasting network are strongly dependent on the transmitter density which determines the degree of diversity when receiving signals from several transmitters. Results indicate that required coverage properties can be achieved in local networks with only three frequency blocks provided that seven transmitters are used to cover each regional service area. Further, we show that there exist an optimal antenna height for a given coverage area and guard interval. The results also indicate that the guard interval has to be chosen with some care dependent on the size of the service area.

Place, publisher, year, edition, pages
National Category
Computer and Information Science
Research subject
URN: urn:nbn:se:kth:diva-28570OAI: diva2:388005
Nordic Radio Symposium
QC 20110117Available from: 2011-01-16 Created: 2011-01-16 Last updated: 2011-01-17Bibliographically approved

Open Access in DiVA

No full text

Search in DiVA

By author/editor
Malmgren, Göran
By organisation
Signals, Sensors and Systems
Computer and Information Science

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Total: 13 hits
ReferencesLink to record
Permanent link

Direct link