Google Tech Talks May 22, 2008 ABSTRACT The old idea of impulse radio dates back to Marconi's first wireless transmissions using sparks. Unlike most wireless today, impulse radio transmissions are extremely wideband signals. The recently FCC- released frequency band from 3.1GHz to 10.6GHz is the widest unlicensed frequency band ever released (7.5GHz). This ultra wide bandwidth (UWB) is commercially explored for even faster data transfer using traditional, multi-band (OFDM) RF techniques. However, the available bandwidth is wide enough for impulse radio transmission giving new functionality and new implementation challenges. In this talk I will show how power efficient impulse radio solutions are feasible in standard digital CMOS technology. Quite non-standard and untraditional design strategies must be used including time-domain signal processing. Circuit topologies for higher order Gaussian pulse generation and power efficient, correlating RAKE receivers will be explained. Impulse radio transmissions have additional interesting properties compared to narrowband modulation. With time-domain processing (TDOA) highly accurate positioning is feasible in the millimeter range. Improved sensitivity for robust communication. Large number of channels (greater than 100). Novel applications are also feasible using impulse transmission. Combining novel design techniques like "Swept-Threshold sampling" and digital lossless integration, micropower impulse radar is feasible in CMOS. A ...
Friday, March 1, 2013
Impulse-based ultra-wide-band (UWB) radio systems and applications
Impulse-based ultra-wide-band (UWB) radio systems and applications Video Clips. Duration : 62.12 Mins.
Google Tech Talks May 22, 2008 ABSTRACT The old idea of impulse radio dates back to Marconi's first wireless transmissions using sparks. Unlike most wireless today, impulse radio transmissions are extremely wideband signals. The recently FCC- released frequency band from 3.1GHz to 10.6GHz is the widest unlicensed frequency band ever released (7.5GHz). This ultra wide bandwidth (UWB) is commercially explored for even faster data transfer using traditional, multi-band (OFDM) RF techniques. However, the available bandwidth is wide enough for impulse radio transmission giving new functionality and new implementation challenges. In this talk I will show how power efficient impulse radio solutions are feasible in standard digital CMOS technology. Quite non-standard and untraditional design strategies must be used including time-domain signal processing. Circuit topologies for higher order Gaussian pulse generation and power efficient, correlating RAKE receivers will be explained. Impulse radio transmissions have additional interesting properties compared to narrowband modulation. With time-domain processing (TDOA) highly accurate positioning is feasible in the millimeter range. Improved sensitivity for robust communication. Large number of channels (greater than 100). Novel applications are also feasible using impulse transmission. Combining novel design techniques like "Swept-Threshold sampling" and digital lossless integration, micropower impulse radar is feasible in CMOS. A ...
Google Tech Talks May 22, 2008 ABSTRACT The old idea of impulse radio dates back to Marconi's first wireless transmissions using sparks. Unlike most wireless today, impulse radio transmissions are extremely wideband signals. The recently FCC- released frequency band from 3.1GHz to 10.6GHz is the widest unlicensed frequency band ever released (7.5GHz). This ultra wide bandwidth (UWB) is commercially explored for even faster data transfer using traditional, multi-band (OFDM) RF techniques. However, the available bandwidth is wide enough for impulse radio transmission giving new functionality and new implementation challenges. In this talk I will show how power efficient impulse radio solutions are feasible in standard digital CMOS technology. Quite non-standard and untraditional design strategies must be used including time-domain signal processing. Circuit topologies for higher order Gaussian pulse generation and power efficient, correlating RAKE receivers will be explained. Impulse radio transmissions have additional interesting properties compared to narrowband modulation. With time-domain processing (TDOA) highly accurate positioning is feasible in the millimeter range. Improved sensitivity for robust communication. Large number of channels (greater than 100). Novel applications are also feasible using impulse transmission. Combining novel design techniques like "Swept-Threshold sampling" and digital lossless integration, micropower impulse radar is feasible in CMOS. A ...
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