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An Ultra wideband (UWB) spatio-temporal channel sounder, employing an orthogonal frequency division multiplexing (OFDM) signal and a receiving virtual array antenna was prototyped and evaluated in a narrowband interference environment. Channel information of the OFDM signal was estimated from the measured data. Time of arrival (TOA) was calculated by correlating the received waveforms with a template...
This paper presents an ultra-wideband (UWB) double-directional channel sounding technique using transformation between time domain (TD) and frequency domain (FD) signals. We proposed the time-of-arrival (TOA), angle-of- arrival (AOA) estimation algorithm and angle-of-departure (AOD) with some modifications of our previous work. There were four main advantages of the proposed estimation technique as...
This paper presents an ultrawide-band (UWB) channel sounding scheme with a technique for estimating time of arrival (TOA) and angle of arrival (AOA) using an antenna array time domain smoothing. The smoothing averages over the time domain UWB signals of several immediate neighbor elements of the array, which is expected to be similar to the increasing number of snapshots as well as the mitigation...
This paper presents an ultra wideband (UWB) indoor channel sounding scheme with a technique for estimating time of arrival (TOA) and angle of arrival (AOA) based on measurements. Since the UWB power spectrum can be measured in advance, we can utilize the spectrum to design a more suitable UWB signal model than traditional signal models based on narrowband and linear theory. We propose a technique...
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