Title :
Digital Audio Broadcasting experimental results of the coverage obtained using the COFDM system
Author :
Maddocks, M.C.D.
Author_Institution :
BBC Res. Dept., London, UK
Abstract :
The aim of Digital Audio Broadcasting (DAB) is to deliver near-CD quality stereo audio programmes in digital form to domestic receivers. One of the limitations of conventional FM radio is that the signal received, in particular by portable and mobile receivers, is often degraded by multipath propagation. A DAB system should therefore be resistant to degradation in the presence of multipath. It should also be spectrally efficient. The DAB transmission system is described. Results are presented of the coverage achieved from a DAB transmitter. The difference in performance resulting from changing various system parameters such as transmit frequency, and RF bandwidth is also compared
Keywords :
Hi-Fi equipment; digital radio systems; field strength measurement; frequency division multiplexing; radio broadcasting; radio transmitters; radiowave propagation; COFDM system; DAB system; DAB transmitter; Digital Audio Broadcasting; RF bandwidth; coverage; domestic receivers; experimental results; field strength measurement; multipath propagation; radiowave propagation; stereo audio programmes; system parameters; transmit frequency;
Conference_Titel :
Broadcasting Convention, 1992. IBC., International
Print_ISBN :
0-85296-547-8
