| 摘要 |
<p>A TM-UWB system that utilizes a multiple correlator receiver thereby enabling a scanning receiver, which precisely measures the impulse response of a channel and wherein measurements can be made out to the maximum communications range of a system. Thus, not only capturing ultra-wideband propagation waveforms, but also information on data symbol statistics. Further, multiple correlators (1902, 1922, 1924, 1926) enable acquisition of pulses and thus faster acquisition, tracking implementations to maintain lock and enable various modulation schemes. Once a tracking correlator is synchronized and locked to an incoming signal, the scanning correlator can sample the received waveform at precise time delays relative to the tracking point. By successively increasing the time delay while sampling the waveform, a complete, time-calibrated picture of the waveform can be collected.</p> |
