| 摘要 |
A broadband multi-frequency-block Extended Digital Audio Broadcasting X-DAB) transmission method for the interference-free transmission of value-added services at a high data rate to mobile receivers within an analog television channel. At least two simultaneously-broadcast adjacent X-DAB frequency blocks in a single-frequency network are provided. A digital input data stream is multiplexed onto the frequency blocks, with the input data steam being source-coded according to the service content of the input data stream. The input data stream is separated into a plurality of individual dens streams, with the individual data steams each having a respective quality of service importance and being distributed according to the respective quality of service importance among the at least two frequency blocks. The method offers a high degree of flexibility with regard to error protection profiles and thus data rates, and permits the implementation of non-constant-ratio error protection profiles, as well as hierarchical transmission. |
