In addition, an application scenario of OFDM-based TDCS, signalling exchange in the cognitive radio context, is proposed in this paper.
此外，本文提出了基于OFDM的TDCS的一种应用场景-认知无线电中的信令交换。
A bearer channel connection protocol establishes and de-establishes bearer connections required on demand, identified by the signalling information, under the control of the Local Exchange.
承载通路连接协议在本地交换机的控制下根据需要来建立和清除承载连接，该连接由信令信息来标识。
They should not be relied upon to provide an error free method of relaying tone signalling to other decoders, such as a telephone exchange DTMF detector, for example.
它不应该被依赖用做提供一种无错的传送方法，传送双音频信号到另一解码器。例如：电话交换机的DTMF侦察器。
The signalling is coming not from the foreign-exchange market (the euro has climbed back from its October low against the dollar) but from the bond markets.
这个危机并不来自于外汇市场（欧元已经从去年十月对美元的低谷中回升），而是来自于债券市场。
The signalling is coming not from the foreign-exchange market (the euro has climbed back from its October low against the dollar) but from the bond markets.
这个危机并不来自于外汇市场（欧元已经从去年十月对美元的低谷中回升），而是来自于债券市场。
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