| 摘要 |
Embodiments are provided wherein a bandwidth of a waveform sequence that is transmitted by a transmitter in order to convey information is varied. According to additional embodiments, a set of frequencies that is used to provide frequency content to the waveform sequence is also varied and comprises non-contiguous first and second frequency intervals wherein a third frequency interval that is between the first and second frequency intervals remains devoid of providing frequency content to the waveform sequence in order to avoid interference. The invention is relevant to 4G LTE carrier aggregation systems/methods and/or other aspects of 4G LTE. Various transmitter/receiver embodiments are disclosed including direct synthesis transmitter/receiver embodiments.
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