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Spectrum sensing for OFDM signals by utilizing pilot tones
Spectrum sensing for OFDM signals by utilizing pilot tones
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机译:利用导频音对OFDM信号进行频谱感测
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摘要
An apparatus comprises a downconverter for providing a signal that may be a received orthogonal frequency division multiplexed (OFDM) symbols from a selected channel, each OFDM symbol comprising N subcarriers at least some of which are pilot subcarriers; and a processor that (a) correlates the received OFDM symbols for providing at least one correlated value, (b) generates a metric value as a function of the at least one correlated value and (b) compares the metric value to a threshold value for detecting if an incumbent signal is present.
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