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DAB New Promises, New Problems Some Aspects on Distribution for DAB

机译：DAB新承诺，新问题DAB分发的某些方面

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It has not been the aim of this paper to present a complete proposal for distribution in a single frequency DAB-network but rather to present a number of factors which have to be taken into account when such a distribution network is planned. Nevertheless, a few conclusions may be drawn: 1. A/D-converters must be locked to a common reference (e.g. network clock) 2. Layer II encoders must be frame aligned before entering the multiplex; 3. Multiplexing is best performed at a central point in the network, the Nodal point; 4. Differences in transmission delay between the Nodal point and transmitters must be equalised at each transmitter; 5. Local oscillators at all transmitters must be locked to a reference with high precision. A number of factors, costs, spectrum efficiency, available networks etc, must be taken into account before the choice of a format and a bearer for the distribution. However, it is believed that the use of satellite distribution of the complete COFDM-signal will support a rapid establishment of large single-frequency networks. It may also be a cost effective and long-term solution.
机译：本文的目的不是提出一个在单频DAB网络中进行分发的完整建议，而是提出在规划这种分发网络时必须考虑的许多因素。然而，可以得出一些结论：1. A / D转换器必须锁定到一个公共参考（例如网络时钟）。2.第II层编码器在进入多路复用之前必须进行帧对齐; 3.多路复用最好在网络的中心点（节点）进行; 4.在每个发射机处，节点和发射机之间的传输延迟差异必须相等。 5.所有发送器的本地振荡器必须高精度地锁定到基准。在选择格式和分配载体之前，必须考虑许多因素，成本，频谱效率，可用网络等。但是，相信使用完整的COFDM信号的卫星分布将支持大型单频网络的快速建立。这也可能是一种具有成本效益的长期解决方案。

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