The digital audio broadcast single frequency network project in southwest Germany

Within a time frame of three years a DAB SFN transmitter network will be brought into operation in the south-western part of Germany. the network is designed to serve at least three million inhabitants. The network performance is analyzed by means of computer simulations. For that purpose, the power density functions (PDFs) of the contributing partial waves are combined in order to determine the local coverage probability. It is shown that SFNs are superior in comparison to multifrequency FM networks. The advantage is identified as SFN gain. A temptative definition is given. Results of model calculations are presented for VHF- and L-band assignments. It is shown that guard interval violations cause intersymbol interference (ISI), deteriorating the SFN's performance.<
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